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Discontinued On Mar. 2015

K8AB Series

Measuring and Monitoring Relays

K8AB Series

Eight slim models featuring a variety of innovative new functions

* Information in this page is a reference that you created on the basis of information in the product catalog before the end of production, may be different from the current situation, such as goods for / supported standards options / price / features of the product. Before using, please check the compatibility and safety system.

K8AB-AS
Single-phase Current Relay

Input Range

Model Range * Connection
terminal
Measuring current Input impedance Overload capacity
K8AB-AS1 0 to 20 mA
AC/DC
I1-COM 2 to 20 mA AC/DC,
10 to 100 mA AC/DC,
50 to 500 mA AC/DC
Approx. 5 Ω Continuous input:
120% of maximum input
1 s max.:
150% of maximum input
0 to 100 mA
AC/DC
I2-COM Approx. 1 Ω
0 to 500 mA
AC/DC
I3-COM Approx. 0.2 Ω
K8AB-AS2 0 to 1 A
AC/DC
I1-COM 0.1 to 1 A AC/DC,
0.5 to 5 A AC/DC,
0.8 to 8 A AC/DC
Approx. 0.12 Ω
(Load: 0.5 VA)
0 to 5 A
AC/DC
I2-COM Approx. 0.02 Ω
(Load: 1.5 VA)
0 to 8 A
AC/DC
I3-COM Approx. 0.02 Ω
(Load: 3 VA)
K8AB-AS3 0 to 100 A
AC
I2-COM 10 to 100 A AC,
20 to 200 A AC
(See note.)
Using OMRON CT Continuous input:
120% of maximum input
30 s max.:
200% of maximum input
1 s max.:
600% of maximum input
0 to 200 A
AC
I3-COM Using OMRON CT

Note: The K8AB-AS3 is designed to be used in combination with an OMRON K8AC-CT200L Current Transformer (CT).
          (Direct input is not possible.)
* The range is selected using connected terminals.

Ratings

Power supply
voltage
Isolated power supply 24 VDC, 24 VAC, 100 to 115 VAC, 200 to 230 VAC
Power consumption 24 VDC: 1 W max.
24 VAC: 4 VA max.
100 to 115 VAC: 4 VA max.
200 to 230 VAC: 5 VA max.
Operating value setting range (SV) 10% to 100% of maximum measuring current
K8AB-AS1: 2 to 20 mA AC/DC
10 to 100 mA AC/DC
50 to 500 mA AC/DC

K8AB-AS2: 0.1 to 1 A AC/DC
0.5 to 5 A AC/DC
0.8 to 8 A AC/DC

K8AB-AS3: When used together with a K8AC-CT200L Current Transformer
10 to 100 A AC
20 to 200 A AC
Operating value 100% operation at set value
Reset value setting range (HYS.) 5% to 50% of operating value
Reset method Manual reset/automatic reset (switchable)
Note: Manual reset: Turn OFF power supply for 1 s or longer.
Operating time setting range (T) 0.1 to 30 s
Startup lock time setting range (LOCK)
Note: Enabled only for overcurrent operation.
0 to 30 s
(The startup lock timer starts when the input has reached approximately 30% or more of the set value.)
Note: Enabled only for overcurrent operation.
Indicators Power (PWR): Green, Relay output (RY): Yellow, Alarm outputs (ALM): Red
Input impedance Refer to Datasheet.
Output relays One SPDT relay (NO/NC switched using DIP switch.)
Output relay ratings Rated load
Resistive load
6 A at 250 VAC (cosΦ = 1)
6 A at 30 VDC (L/R = 0 ms)
Inductive load
1 A at 250 VAC (cos Φ = 0.4)
1 A at 30 VDC (L/R = 7 ms)
Maximum contact voltage: 250 VAC
Maximum contact current: 6 A AC
Maximum switching capacity: 1,500 VA
Minimum load: 10 mA at 5 VDC
Mechanical life: 10,000,000 operations
Electrical life: Make: 50,000 times, Break: 30,000 times
Ambient operating temperature -20 to 60°C (with no condensation or icing)
Storage temperature -40 to 70°C (with no condensation or icing)
Ambient operating humidity 25% to 85% (with no condensation)
Storage humidity 25% to 85% (with no condensation)
Altitude 2,000 m max.
Terminal screw tightening torque 0.49 Nm
Terminal wiring method Recommended wire
Solid wire: 2.5 mm2
Twisted wires: AWG16, AWG18

Note:
1. Ferrules with insulating sleeves must be used with twisted wires.
2. Two wires can be twisted together.

Recommended ferrules
Al 1,5-8BK (for AWG16) manufactured by Phoenix Contact
Al 1-8RD (for AWG18) manufactured by Phoenix Contact
Al 0,75-8GY (for AWG18) manufactured by Phoenix Contact
Case color Munsell 5Y8/1
Case material PBT/ABS resin (self-extinguishing resin) UL94-V0
Weight Approx. 130 g
Mounting Mounted to DIN Track or via M4 screws (tightening torque: 1.2 Nm)
Dimensions 22.5 (W) × 90 (H) × 100 (D) mm

Specifications

Allowable power supply voltage range 85% to 110% of power supply voltage
Allowable power supply frequency range 50/60 Hz ±5 Hz
Input frequency range K8AB-AS1 and K8AB-AS2: DC input or AC input (45 to 65 Hz)
K8AB-AS3: AC input (45 to 65 Hz)
Overload capacity K8AB-AS1 and K8AB-AS2: Continuous input: 120% of maximum input, 1 s max.: 150% of maximum input.
K8AB-AS3: Continuous input: 120% of maximum input, 30 s max.: 200% of maximum input, 1 s max.: 600% of maximum input
Note: Overload capacity of primary side of CT.
Setting error Operating value Set value ± 10% full scale
Reset value
Operating time
Startup lock time
Repeat error Operating value Operating value ±2%
Error calculation: Error = ((Maximum operating value - Minimum operating value (over 10 operations))/2)/Average value × 100%
Reset value Reset value ±2%
Error calculation: Error = ((Maximum reset value - Minimum reset value (over 10 resets))/2)/Average value × 100%
Operating time Operating time repeat error: ±50 ms
Overcurrent: Measured when input suddenly changes from 0% to 120% of setting.
Undercurrent: Measured when input suddenly changes from 120% to 0% of setting.
Startup lock time Startup lock time repeat error: ±50 ms (measured at sudden change from 0% to 120% of setting)
Temperature influence Operating value
Drift based on measured value at standard temperature:
- 20 ° C to standard temperature: ±1,000 ppm/°C max.
Standard temperature to 60°C: ±1,000 ppm/°C max.
(Humidity: 25% to 80%)

Operating time
Fluctuation based on measured value at standard temperature:
- 20°C to standard temperature: ± 10% max.
Standard temperature to 60°C: ± 10% max.
(Humidity: 25% to 80%)
Humidity influence Operating value
Based on ambient humidity of 65%
25% to 80%: ± 5% max.

Operating time
Based on ambient room humidity
25% to 80%: ± 10% max.
Influence of power supply voltage Operating value: ± 5% max.
Operating time: ± 10% max.
Note: The error in the operating value and operating time under standard conditions.
Influence of power supply frequency Operating value: ±5% max. (at 45 to 65 Hz)
Operating time: ±10% max. (at 45 to 65 Hz)
Note: The error in the operating value and operating time under standard conditions.
Influence of input frequency Operating value (45 to 65 Hz)
K8AB-AS1 and K8AB-AS2: ± 5% max.
K8AB-AS3: ± 10% max.

Operating time (45 to 65 Hz)
± 10% max.
Note: The error in the operating value and operating time under standard conditions.
Applicable standards Conforming standards EN60255-5 and EN60255-6
Installation environment (Pollution Degree 2, Overvoltage Category III)
EMC EN61326
Insulation resistance 20 MΩ min.
Between external terminals and case
Between power supply terminals and input terminals (excluding models with DC power supply)
Between power supply terminals and output terminals
Between input terminals and output terminals
Dielectric strength 2,000 VAC for one minute
Between external terminals and case
Between power supply terminals and input terminals (excluding models with DC power supply)
Between power supply terminals and output terminals
Between input terminals and output terminals
Noise immunity 1,500 V power supply terminal common/normal mode
Square-wave noise of ±1 μ s/100 ns pulse width with 1-ns rise time
Vibration resistance Frequency 10 to 55 Hz, 0.35-mm single amplitude, acceleration 50 m/s2
10 sweeps of 5 min each in X, Y, and Z directions
Shock resistance 100 m/s2, 3 times each in 6 directions along three axes
(up/down, left/right, forward/backward)
Degree of protection Terminal section: Finger protection

K8AB-VS
Single-phase Voltage Relay

Input Range

Model Range* Connection
terminal
Measuring voltage Input impedance Overload capacity
K8AB-VS1 0 to 60 mV AC/DC V1-COM 6 to 60 mV AC/DC,
10 to 100 mV AC/DC,
30 to 300 mV AC/DC
Approx. 220 kΩ Continuous input:
115% of maximum input
10 s max.:
125% of maximum input
0 to 100 mV AC/DC V2-COM Approx. 230 kΩ
0 to 300 mV AC/DC V3-COM Approx. 260 kΩ
K8AB-VS2 0 to 10 V AC/DC V1-COM 1 to 10 V AC/DC,
3 to 30 V AC/DC,
15 to 150 V AC/DC
Approx. 120 kΩ
0 to 30 V AC/DC V2-COM Approx. 320 kΩ
0 to 150 V AC/DC V3-COM Approx. 1.6 MΩ
K8AB-VS3 0 to 200 V AC/DC V1-COM 20 to 200 V AC/DC,
30 to 300 V AC/DC,
60 to 600 V AC/DC
Approx. 1.2 MΩ
0 to 300 V AC/DC V2-COM Approx. 1.7 MΩ
0 to 600 V AC/DC V3-COM Approx. 3.1 MΩ

* The range is selected using connected terminals.

Ratings

Power supply
voltage
Isolated power supply 24 VDC, 24 VAC, 100 to 115 VAC, 200 to 230 VAC
Power consumption 24 VDC: 1 W max.
24 VAC: 4 VA max.
100 to 115 VAC: 4 VA max.
200 to 230 VAC: 5 VA max.
Operating value setting range (SV) 10% to 100% of maximum measuring voltage
K8AB-VS1:
6 to 60 mV AC/DC
10 to 100 mV AC/DC
30 to 300 mV AC/DC
K8AB-VS2:
1 to 10 V AC/DC
3 to 30 V AC/DC
15 to 150 V AC/DC
K8AB-VS3:
20 to 200 V AC/DC
30 to 300 V AC/DC
60 to 600 V AC/DC
Operating value 100% operation at set value
Reset value setting range (HYS.) 5% to 50% of operating value
Reset method Manual reset/automatic reset (switchable)
Note: Manual reset: Turn OFF power supply for 1 s or longer.
Operating time setting range (T) 0.1 to 30 s
Power ON lock time (LOCK) 1 s or 5 s (Switched using DIP switch.)
Indicators Power (PWR): Green, Relay output (RY): Yellow, Alarm outputs (ALM): Red
Input impedance Refer to Datasheet.
Output relays One SPDT relay (NO/NC switched using DIP switch.)
Output relay ratings Rated load
Resistive load
6 A at 250 VAC (cosΦ = 1)
6 A at 30 VDC (L/R = 0 ms)
Inductive load
1 A at 250 VAC (cos Φ = 0.4)
1 A at 30 VDC (L/R = 7 ms)
Maximum contact voltage: 250 VAC
Maximum contact current: 6 A AC
Maximum switching capacity: 1,500 VA
Minimum load: 10 mA at 5 VDC
Mechanical life: 10,000,000 operations
Electrical life: Make: 50,000 times, Break: 30,000 times
Ambient operating temperature -20 to 60°C (with no condensation or icing)
Storage temperature -40 to 70°C (with no condensation or icing)
Ambient operating humidity 25% to 85% (with no condensation)
Storage humidity 25% to 85% (with no condensation)
Altitude 2,000 m max.
Terminal screw tightening torque 0.49 Nm
Terminal wiring method Recommended wire
Solid wire: 2.5 mm2
Twisted wires: AWG16, AWG18
Note:
1. Ferrules with insulating sleeves must be used with twisted wires.
2. Two wires can be twisted together.
Recommended ferrules
Al 1,5-8BK (for AWG16) manufactured by Phoenix Contact
Al 1-8RD (for AWG18) manufactured by Phoenix Contact
Al 0,75-8GY (for AWG18) manufactured by Phoenix Contact
Case color Munsell 5Y8/1
Case material PBT/ABS resin (self-extinguishing resin) UL94-V0
Weight Approx. 130 g
Mounting Mounted to DIN Track or via M4 screws (tightening torque: 1.2 Nm)
Dimensions 22.5 (W) × 90 (H) × 100 (D) mm

Specifications

Allowable power supply voltage range 85% to 110% of power supply voltage
Allowable power supply frequency range 50/60 Hz ±5 Hz
Input frequency range DC input or AC input (40 to 500 Hz)
Overload capacity Continuous input: 115% of maximum input, 10 s max.: 125% of maximum input
Setting error Operating value Set value ± 10% full scale
Reset value
Operating time
Power ON lock time Set value ± 0.5 s
Repeat error Operating value Operating value ±2%
Error calculation: Error = ((Maximum operating value - Minimum operating value (over 10 operations))/2)/Average value × 100%
Reset value Reset value ±2%
Error calculation: Error = ((Maximum reset value - Minimum reset value (over 10 resets))/2)/Average value × 100%
Operating time Operating time repeat error: ±50 ms
Overvoltage: Measured when input suddenly changes from 0% to 120% of setting.
Undervoltage: Measured when input suddenly changes from 120% to 0% of setting.
Power ON lock time Power ON lock time repeat error: ±0.5 s
(The operating time when the operating time is set to the minimum value and the power supply suddenly changes from 0% to 100%.)
Temperature influence Operating value
Drift based on measured value at standard temperature:
- 20 ° C to standard temperature: ±1,000 ppm/°C max.
Standard temperature to 60°C: ±1,000 ppm/°C max.
(Humidity: 25% to 80%)

Operating time
Fluctuation based on measured value at standard temperature:
- 20°C to standard temperature: ± 10% max.
Standard temperature to 60°C: ± 10% max.
(Humidity: 25% to 80%)
Humidity influence Operating value
Based on ambient humidity of 65%
25% to 80%: ± 5% max.

Operating time
Based on ambient room humidity
25% to 80%: ± 10% max.
Influence of power supply voltage Operating value: ± 5% max.
Operating time: ± 10% max.
Note: The error in the operating value and operating time under standard conditions.
Influence of power supply frequency Operating value: ±5% max. (at 45 to 65 Hz)
Operating time: ±10% max. (at 45 to 65 Hz)
Note: The error in the operating value and operating time under standard conditions.
Influence of input frequency At 40 to 500 Hz
Operating value ± 5% max.
Operating time ± 10% max.
Note: The error in the operating value and operating time under standard conditions.
Applicable standards Conforming standards EN60255-5 and EN60255-6
Installation environment (Pollution Degree 2, Overvoltage Category III)
EMC EN61326
Safety standards UL508
Insulation resistance 20 MΩ min.
Between external terminals and case
Between power supply terminals and input terminals (excluding models with DC power supply)
Between power supply terminals and output terminals
Between input terminals and output terminals
Dielectric strength 2,000 VAC for one minute
Between external terminals and case
Between power supply terminals and input terminals (excluding models with DC power supply)
Between power supply terminals and output terminals
Between input terminals and output terminals
Noise immunity 1,500 V power supply terminal common/normal mode
Square-wave noise of ±1 μ s/100 ns pulse width with 1-ns rise time
Vibration resistance Frequency 10 to 55 Hz, 0.35-mm single amplitude, acceleration 50 m/s2
10 sweeps of 5 min each in X, Y, and Z directions
Shock resistance 100 m/s2, 3 times each in 6 directions along three axes (up/down, left/right, forward/backward)
Degree of protection Terminal section: Finger protection

K8AB-VW
Single-phase Voltage Relay

Input Range

Model Range* Connection
terminal
Measuring voltage Input impedance Overload capacity
K8AB-VW1 0 to 60 mV AC/DC V1-COM 6 to 60 mV AC/DC,
10 to 100 mV AC/DC,
30 to 300 mV AC/DC
Approx. 220 kΩ Continuous input:
115% of maximum input
10 s max.:
125% of maximum input
0 to 100 mV AC/DC V2-COM Approx. 230 kΩ
0 to 300 mV AC/DC V3-COM Approx. 260 kΩ
K8AB-VW2 0 to 10 V AC/DC V1-COM 1 to 10 V AC/DC,
3 to 30 V AC/DC,
15 to 150 V AC/DC
Approx. 120 kΩ
0 to 30 V AC/DC V2-COM Approx. 320 kΩ
0 to 150 V AC/DC V3-COM Approx. 1.6 MΩ
K8AB-VW3 0 to 200 V AC/DC V1-COM 20 to 200 V AC/DC,
30 to 300 V AC/DC,
60 to 600 V AC/DC
Approx. 1.2 MΩ
0 to 300 V AC/DC V2-COM Approx. 1.7 MΩ
0 to 600 V AC/DC V3-COM Approx. 3.1 MΩ

* The range is selected using connected terminals.

Ratings

Power supply
voltage
Isolated power supply 24 VDC, 24 VAC, 100 to 115 VAC, 200 to 230 VAC
Power consumption 24 VDC: 1 W max.
24 VAC: 4 VA max.
100 to 115 VAC: 4 VA max.
200 to 230 VAC: 5 VA max.
Operating value setting range
(AL1 and AL2)
10% to 100% of maximum measuring voltage
K8AB-VW1:
6 to 60 mV AC/DC
10 to 100 mV AC/DC
30 to 300 mV AC/DC
K8AB-VW2:
1 to 10 V AC/DC
3 to 30 V AC/DC
15 to 150 V AC/DC
K8AB-VW3:
20 to 200 V AC
30 to 300 V AC
60 to 600 V AC
Operating value 100% operation at set value
Reset value 5% of operating value (fixed)
Reset method Manual reset/automatic reset (switchable)
Note: Manual reset: Turn OFF power supply for 1 s or longer.
Operating time setting range (T) 0.1 to 30 s
Power ON lock time (LOCK) 1 s or 5 s (Switched using DIP switch.)
Indicators Power (PWR): Green, Relay output (RY): Yellow, Alarm outputs (ALM): Red
Input impedance Refer to Datasheet.
Output relays Two SPDT relays (NC operation)
Output relay ratings Rated load
Resistive load
6 A at 250 VAC (cosΦ = 1)
6 A at 30 VDC (L/R = 0 ms)
Inductive load
1 A at 250 VAC (cos Φ = 0.4)
1 A at 30 VDC (L/R = 7 ms)
Maximum contact voltage: 250 VAC
Maximum contact current: 6 A AC
Maximum switching capacity: 1,500 VA
Minimum load: 10 mA at 5 VDC
Mechanical life: 10,000,000 operations
Electrical life: Make: 50,000 times, Break: 30,000 times
Ambient operating temperature -20 to 60°C (with no condensation or icing)
Storage temperature -40 to 70°C (with no condensation or icing)
Ambient operating humidity 25% to 85% (with no condensation)
Storage humidity 25% to 85% (with no condensation)
Altitude 2,000 m max.
Terminal screw tightening torque 0.49 Nm
Terminal wiring method Recommended wire
Solid wire: 2.5 mm2
Twisted wires: AWG16, AWG18
Note:
1. Ferrules with insulating sleeves must be used with twisted wires.
2. Two wires can be twisted together.
Recommended ferrules
Al 1,5-8BK (for AWG16) manufactured by Phoenix Contact
Al 1-8RD (for AWG18) manufactured by Phoenix Contact
Al 0,75-8GY (for AWG18) manufactured by Phoenix Contact
Case color Munsell 5Y8/1
Case material PBT/ABS resin (self-extinguishing resin) UL94-V0
Weight Approx. 140 g
Mounting Mounted to DIN Track or via M4 screws (tightening torque: 1.2 Nm)
Dimensions 22.5 (W) × 90 (H) × 100 (D) mm

Specifications

Allowable power supply voltage range 85% to 110% of power supply voltage
Allowable power supply frequency range 50/60 Hz ±5 Hz
Input frequency range 40 to 500 Hz
Overload capacity Continuous input: 115% of maximum input, 10 s max.: 125% of maximum input
Setting error Operating value Set value ± 10% full scale
Operating time
Power ON lock time Set value ± 0.5 s
Repeat error Operating value Operating value ±2%
Error calculation: Error = ((Maximum operating value - Minimum operating value (over 10 operations))/2)/Average value × 100%
Reset value Overvoltage Operating value × 95% ±2%
Undervoltage Operating value × 105% ±2%
Error calculation: Error = ((Maximum reset value - Minimum reset value (over 10 resets))/2)/Average value × 100%
Operating time Operating time repeat error: ±50 ms
Overvoltage: Measured when input suddenly changes from 0% to 120% of setting.
Undervoltage: Measured when input suddenly changes from 120% to 0% of setting.
Power ON lock time Power ON lock time repeat error: ±0.5 s
(The operating time when the operating time is set to the minimum value and the power supply suddenly changes from 0% to 100%.)
Temperature influence Operating value
Drift based on measured value at standard temperature:
- 20 ° C to standard temperature: ±1,000 ppm/°C max.
Standard temperature to 60°C: ±1,000 ppm/°C max.
(Humidity: 25% to 80%)

Operating time
Fluctuation based on measured value at standard temperature:
- 20°C to standard temperature: ± 10% max.
Standard temperature to 60°C: ± 10% max.
(Humidity: 25% to 80%)
Humidity influence Operating value
Based on ambient humidity of 65%
25% to 80%: ± 5% max.

Operating time
Based on ambient room humidity
25% to 80%: ± 10% max.
Influence of power supply voltage Operating value: ± 5% max.
Operating time: ± 10% max.
Note: The error in the operating value and operating time under standard conditions.
Influence of power supply frequency Operating value: ±5% max. (at 45 to 65 Hz)
Operating time: ±10% max. (at 45 to 65 Hz)
Note: The error in the operating value and operating time under standard conditions.
Influence of input frequency At 40 to 500 Hz
Operating value ±5% max.
Operating time ±10% max.
Note: The error in the operating value and operating time under standard conditions.
Applicable standards Conforming standards EN60255-5 and EN60255-6
Installation environment (Pollution Degree 2, Overvoltage Category III)
EMC EN61326
Safety standards UL508
Insulation resistance 20 MΩ min.
Between external terminals and case
Between power supply terminals and input terminals (excluding models with DC power supply)
Between power supply terminals and output 1 terminals
Between power supply terminals and output 2 terminals
Between input terminals and output 1 terminals
Between input terminals and output 2 terminals
Between output 1 terminals and output 2 terminals
Dielectric strength 2,000 VAC for one minute
Between external terminals and case
Between power supply terminals and input terminals (excluding models with DC power supply)
Between power supply terminals and output 1 terminals
Between power supply terminals and output 2 terminals
Between input terminals and output 1 terminals
Between input terminals and output 2 terminals
Between output 1 terminals and output 2 terminals
Noise immunity 1,500 V power supply terminal common/normal mode
Square-wave noise of ±1 μ s/100 ns pulse width with 1-ns rise time
Vibration resistance Frequency 10 to 55 Hz, 0.35-mm single amplitude, acceleration 50 m/s2
10 sweeps of 5 min each in X, Y, and Z directions
Shock resistance 100 m/s2, 3 times each in 6 directions along three axes (up/down, left/right, forward/backward)
Degree of protection Terminal section: Finger protection

K8AB-PH
Phase-sequence Phase-loss Relay

Ratings

Rated input voltage Three-phase, three-wire mode, 200 to 500 VAC
Input load 15 VA max.
Reversed phase and phase loss
operating time
0.1 s max.
Reset method Automatic reset
Indicators Power (PWR): Green, Relay output (RY): Yellow
Output relays One SPDT relay (NC operation)
Output relay ratings Rated load
Resistive load
6 A at 250 VAC (cosΦ = 1)
6 A at 30 VDC (L/R = 0 ms)
Inductive load
1 A at 250 VAC (cos Φ = 0.4)
1 A at 30 VDC (L/R = 7 ms)
Maximum contact voltage: 250 VAC
Maximum contact current: 6 A AC
Maximum switching capacity: 1,500 VA
Minimum load: 10 mA at 5 VDC
Mechanical life: 1,000,000 operations
Electrical life: Make: 50,000 times, Break: 30,000 times
Ambient operating temperature -20 to 60°C (with no condensation or icing)
Storage temperature -40 to 70°C (with no condensation or icing)
Ambient operating humidity 25% to 85% (with no condensation)
Storage humidity 25% to 85% (with no condensation)
Altitude 2,000 m max.
Terminal screw tightening torque 0.54 Nm
Terminal wiring method Recommended wire
Solid wire: 2.5 mm2
Twisted wires: AWG16, AWG18
Note 1: Ferrules with insulating sleeves must be used with twisted wires.
Note 2: Two wires can be twisted together.
Recommended ferrules
Al 1,5-8BK (for AWG16) manufactured by Phoenix Contact
Al 1-8RD (for AWG18) manufactured by Phoenix Contact
Al 0,75-8GY (for AWG18) manufactured by Phoenix Contact
Case color Munsell 5Y8/1
Case material ABS resin (self-extinguishing resin) UL94-V0
Weight Approx. 110 g
Mounting Mounted to DIN Track or via M4 screws (tightening torque: 1.2 Nm)
Dimensions 22.5 (W) × 90 (H) × 100 (D) mm

Specifications

Input voltage range 200 to 500 VAC
Input frequency range 45 to 65 Hz
Overload capacity Continuous input: 115% of maximum input, 10 s max.: 125% of maximum input
Fixed Phase Asymmetry
Monitoring
Output relay releases when one phase-phase voltage drops below 80% of the other
phase-phase voltage.
Temperature influence Operating time
Fluctuation based on measured value at standard temperature:
- 20°C to standard temperature: ± 10% max.
Standard temperature to 60°C: ± 10% max.
(Humidity: 25% to 80%)
Humidity influence Operating time
Based on ambient room humidity
25% to 80%: ± 10% max.
Influence of power supply
voltage
Operating time: ± 10% max.
Note: The error in the operating value and operating time under standard conditions.
Influence of power supply
frequency
Operating time: ±10% max. (at 45 to 65 Hz)
Note: The error in the operating value and operating time under standard conditions.
Influence of input frequency At 45 to 65 Hz
Operating time: ±10% max.
Note: The error in the operating value and operating time under standard conditions.
Applicable
standards
Conforming
standards
EN60255-5 and EN60255-6
Installation environment (Pollution Degree 2, Overvoltage Category III)
EMC EN61326
Safety standards UL508
Insulation resistance 20 MΩ min.
Between external terminals and case
Between input terminals and output terminals
Dielectric strength 2,000 VAC for one minute
Between external terminals and case
Between input terminals and output terminals
Noise immunity 1,500 V power supply terminal common/normal mode
Square-wave noise of ±1 μs/100 ns pulse width with 1-ns rise time
Vibration resistance Frequency 10 to 55 Hz, 0.35-mm single amplitude, acceleration 50 m/s2
10 sweeps of 5 min each in X, Y, and Z directions
Shock resistance 100 m/s2, 3 times each in 6 directions along three axes (up/down, left/right,
forward/backward)
Degree of protection Terminal section: Finger protection

K8AB-PM
Three-phase Phase-sequence Phase-loss Relay

Ratings

Rated input
voltage
K8AB-PM1 Three-phase, three-wire Mode: 200, 220, 230 and 240 VAC
Three-phase, four-wire Mode: 115, 127, 133 and 138 VAC
K8AB-PM2 Three-phase, three-wire Mode: 380, 400, 415 and 480 VAC
Three-phase, four-wire Mode: 220, 230, 240 and 277 VAC
Input load K8AB-PM1: 25 VA max.
K8AB-PM2: 45 VA max.
Operating value setting range
(OVER, UNDER)
Overvoltage
- 30% to 25% of rated input voltage
Undervoltage
- 30% to 25% of rated input voltage
Note: The rated input voltage can be switched using the DIP switch.
Operating value 100% operation at set value
Reset value 5% of operating value (fixed)
Reset method Automatic reset
Operating time
setting range (T)
Overvoltage/
undervoltage
0.1 to 30 s
Reversed phase/
phase loss
0.1 s max.
Startup lock time (LOCK) 1 s or 5 s (Switched using DIP switch.)
Indicators Power (PWR): Green, Relay output (RY): Yellow, OVER/UNDER: Red
Output relays Two SPDT relays (NC operation)
Output relay ratings Rated load
Resistive load
6 A at 250 VAC (cosΦ = 1)
6 A at 30 VDC (L/R = 0 ms)
Inductive load
1 A at 250 VAC (cos Φ = 0.4)
1 A at 30 VDC (L/R = 7 ms)
Maximum contact voltage: 250 VAC
Maximum contact current: 6 A AC
Maximum switching capacity: 1,500 VA
Minimum load: 10 mA at 5 VDC
Mechanical life: 10,000,000 operations
Electrical life: Make: 50,000 times, Break: 30,000 times
Ambient operating temperature -20 to 60°C (with no condensation or icing)
Storage temperature -40 to 70°C (with no condensation or icing)
Ambient operating humidity 25% to 85% (with no condensation)
Storage humidity 25% to 85% (with no condensation)
Altitude 2,000 m max.
Terminal screw tightening torque 0.49 Nm
Terminal wiring method Recommended wire
Solid wire: 2.5 mm2
Twisted wires: AWG16, AWG18
Note:
1. Ferrules with insulating sleeves must be used with twisted wires.
2. Two wires can be twisted together.
Recommended ferrules
Al 1,5-8BK (for AWG16) manufactured by Phoenix Contact
Al 1-8RD (for AWG18) manufactured by Phoenix Contact
Al 0,75-8GY (for AWG18) manufactured by Phoenix Contact
Case color Munsell 5Y8/1
Case material ABS resin (self-extinguishing resin) UL94-V0
Weight Approx. 130 g
Mounting Mounted to DIN Track or via M4 screws (tightening torque: 1.2 Nm)
Dimensions 22.5 (W) × 90 (H) × 100 (D) mm

Specifications

Input frequency range 45 to 65 Hz
Overload capacity Continuous input: 115% of maximum input, 10 s max.: 125% of maximum input
Setting error Operating value Set value ±10% of full scale
Operating time
Startup lock time Set value ±0.5 s
Repeat error Operating value Operating value ±2%
Error calculation: Error = ((Maximum operating value - Minimum operating value (over 10 operations))/2)/Average value × 100%
Reset value Overvoltage: Operating value x 95% ±2%
Undervoltage: Operating value x 105% ±2%
Error calculation: Error = ((Maximum reset value - Minimum reset value (over 10 resets))/2)/Average value × 100%
Operating time Operating time repeat error: ±50 ms
Overvoltage: Measured when input suddenly changes from 70% to 120% of setting.
Undervoltage: Measured when input suddenly changes from 120% to 70% of setting.
The input voltage, however, must be between 70% and 125% of rating.
Startup lock time Startup lock time repeat error: ±0.5 s
(The operating time when the operating time is set to the minimum value and the power supply suddenly changes from 0% to 100%.)
Temperature influence Operating value
Drift based on measured value at standard temperature:
- 20 ° C to standard temperature: ±1,000 ppm/°C max.
Standard temperature to 60°C : ±1,000 ppm/°C max.
(Humidity: 25% to 80%)

Operating time
Fluctuation based on measured value at standard temperature:
- 20°C to standard temperature: ± 10% max.
Standard temperature to 60°C : ± 10% max.
(Humidity: 25% to 80%)
Humidity influence Operating value
Based on ambient humidity of 65%
25% to 80%: ± 5% max.

Operating time
Based on ambient room humidity
25% to 80%: ± 10% max.
Influence of input frequency At 45 to 65 Hz
Operating value ± 5% max.
Operating time ± 10% max.
Note: The error in the operating value and operating time under standard conditions.
Applicable standards Conforming standards EN60255-5 and EN60255-6
Installation environment (Pollution Degree 2, Overvoltage Category III)
EMC EN61326
Safety standards UL508
Insulation resistance 20 MΩ min.
Between external terminals and case
Between input terminals and output 1 terminals
Between input terminals and output 2 terminals
Between output 1 terminals and output 2 terminals
Dielectric strength 2,000 VAC for one minute
Between external terminals and case
Between input terminals and output 1 terminals
Between input terminals and output 2 terminals
Between output 1 terminals and output 2 terminals
Noise immunity 1,500 V power supply terminal common/normal mode
Square-wave noise of ±1 μ s/100 ns pulse width with 1-ns rise time
Vibration resistance Frequency 10 to 55 Hz, 0.35-mm single amplitude, acceleration 50 m/s2
10 sweeps of 5 min each in X, Y, and Z directions
Shock resistance 100 m/s2, 3 times each in 6 directions along three axes (up/down, left/right, forward/backward)
Degree of protection Terminal section: Finger protection

K8AB-PA
Three-phase Asymmetry and Phase-sequence Phase-loss Relay

Ratings

Rated input
voltage
K8AB-PA1 Three-phase, three-wire Mode: 200, 220, 230 and 240 VAC
Three-phase, four-wire Mode: 115, 127, 133 and 138 VAC
K8AB-PA2 Three-phase, three-wire Mode: 380, 400, 415 and 480 VAC
Three-phase, four-wire Mode: 220, 230, 240 and 277 VAC
Input load K8AB-PA1: 25 VA max.
K8AB-PA2: 45 VA max.
Operating value setting range (ASY.) Asymmetry rate: 2% to 22%
Operating value Asymmetry operating value = Rated input voltage × Asymmetry set value (%)
The asymmetry operation will function when the potential difference between
the highest and lowest voltage phases equals or exceeds the asymmetry
operating value.
Reset value setting range (HYS.) 5% of operating value (fixed)
Reset method Automatic reset
Operating time
setting range (T)
Asymmetry 0.1 to 30 s
Reversed
phase/phase loss
0.1 s max.
Startup lock time (LOCK) 1 s or 5 s (Switched using DIP switch.)
Indicators Power (PWR): Green, Relay output (RY): Yellow, Alarm outputs (ALM): Red
Output relays One SPDT relay (NC operation)
Output relay ratings Rated load
Resistive load
6 A at 250 VAC (cosφ = 1)
6 A at 30 VDC (L/R = 0 ms)
Inductive load
1 A at 250 VAC (cosφ = 0.4)
1 A at 30 VDC (L/R = 7 ms)
Maximum contact voltage: 250 VAC
Maximum contact current: 6 A AC
Maximum switching capacity: 1,500 VA
Minimum load: 10 mA at 5 VDC
Mechanical life: 10,000,000 operations
Electrical life: Make: 50,000 times, Break: 30,000 times
Ambient operating temperature -20 to 60°C (with no condensation or icing)
Storage temperature -40 to 70°C (with no condensation or icing)
Ambient operating humidity 25% to 85% (with no condensation)
Storage humidity 25% to 85% (with no condensation)
Altitude 2,000 m max.
Terminal screw tightening torque 0.49 Nm
Terminal wiring method Recommended wire
Solid wire: 2.5 mm2
Twisted wires: AWG16, AWG18
Note:
1. Ferrules with insulating sleeves must be used with twisted wires.
2. Two wires can be twisted together.
Recommended ferrules
Al 1,5-8BK (for AWG16) manufactured by Phoenix Contact
Al 1-8RD (for AWG18) manufactured by Phoenix Contact
Al 0,75-8GY (for AWG18) manufactured by Phoenix Contact
Case color Munsell 5Y8/1
Case material ABS resin (self-extinguishing resin) UL94-V0
Weight Approx. 120 g
Mounting Mounted to DIN Track or via M4 screws (tightening torque: 1.2 Nm)
Dimensions 22.5 (W) × 90 (H) × 100 (D) mm

Specifications

Input frequency range 45 to 65 Hz
Overload capacity Continuous input: 115% of maximum input, 10 s max.: 125% of maximum input
Setting error Operating value Set value ± 10% full scale
Operating time
Startup lock time Set value ± 0.5 s
Repeat error Operating value Operating value ±2%
Error calculation: Error = ((Maximum operating value - Minimum operating value (over 10 operations))/2)/Average value × 100%
Reset value Operating value × 95% ±2%
Error calculation: Error = ((Maximum reset value - Minimum reset value (over 10 resets))/2)/Average value × 100%
Operating time Operating time repeat error: ±50 ms
Asymmetry: Measured when the input suddenly changes from the three-phase asymmetry status to a difference between
the maximum and minimum phases of 120% of the asymmetry operating value.
Startup lock time Startup lock time repeat error: ±0.5 s
(The operating time when the operating time is set to the minimum value and the power supply suddenly changes from 0% to 100%.)
Temperature influence Operating value
Drift based on measured value at standard temperature:
- 20 ° C to standard temperature: ±1,000 ppm/°C max.
Standard temperature to 60°C: ±1,000 ppm/°C max.
(Humidity: 25% to 80%)

Operating time
Fluctuation based on measured value at standard temperature:
- 20°C to standard temperature: ± 10% max.
Standard temperature to 60°C: ± 10% max.
(Humidity: 25% to 80%)
Humidity influence Operating value
Based on ambient humidity of 65%
25% to 80%: ± 5% max.

Operating time
Based on ambient room humidity
25% to 80%: ± 10% max.
Influence of input frequency At 45 to 65 Hz
Operating value ±5% max.
Operating time ±10% max.
Note: The error in the operating value and operating time under standard conditions.
Applicable standards Conforming standards EN60255-5 and EN60255-6
Installation environment (Pollution Degree 2, Overvoltage Category III)
EMC EN61326
Safety standards UL508
Insulation resistance 20 MΩ min.
Between external terminals and case
Between input terminals and output terminals
Dielectric strength 2,000 VAC for one minute
Between external terminals and case
Between input terminals and output terminals
Noise immunity 1,500 V power supply terminal common/normal mode
Square-wave noise of ±1 μ s/100 ns pulse width with 1-ns rise time
Vibration resistance Frequency 10 to 55 Hz, 0.35-mm single amplitude, acceleration 50 m/s2
10 sweeps of 5 min each in X, Y, and Z directions
Shock resistance 100 m/s2, 3 times each in 6 directions along three axes (up/down, left/right, forward/backward)
Degree of protection Terminal section: Finger protection

K8AB-PW
Three-phase Voltage Relay

Ratings

Rated input voltage K8AB-PW1 Three-phase, three-wire Mode: 200, 220, 230 and 240 VAC
Three-phase, four-wire Mode: 115, 127, 133 and 138 VAC
K8AB-PW2 Three-phase, three-wire Mode: 380, 400, 415 and 480 VAC
Three-phase, four-wire Mode: 220, 230, 240 and 277 VAC
Input load K8AB-PW1: 25 VA max.
K8AB-PW2: 45 VA max.
Operating value setting range
(OVER, UNDER)
Overvoltage
-30% to 25% of rated input voltage
Undervoltage
-30% to 25% of rated input voltage
Note: The rated input voltage can be switched using the DIP switch.
Operating value 100% operation at set value
Reset value 5% of operating value (fixed)
Reset method Automatic reset
Operating time setting range (T) Overvoltage and undervoltage: 0.1 to 30 s
Startup lock time (LOCK) 1 s or 5 s (Switched using DIP switch.)
Indicators Power (PWR): Green, Relay output (RY): Yellow, OVER/UNDER: Red
Output relays Two SPDT relays (NC operation)
Output relay ratings Rated load
Resistive load
6 A at 250 VAC (cosΦ = 1)
6 A at 30 VDC (L/R = 0 ms)
Inductive load
1 A at 250 VAC (cos Φ = 0.4)
1 A at 30 VDC (L/R = 7 ms)
Maximum contact voltage: 250 VAC
Maximum contact current: 6 A AC
Maximum switching capacity: 1,500 VA
Minimum load: 10 mA at 5 VDC
Mechanical life: 10,000,000 operations
Electrical life: Make: 50,000 times, Break: 30,000 times
Ambient operating temperature -20 to 60°C (with no condensation or icing)
Storage temperature -40 to 70°C (with no condensation or icing)
Ambient operating humidity 25% to 85% (with no condensation)
Storage humidity 25% to 85% (with no condensation)
Altitude 2,000 m max.
Terminal screw tightening torque 0.49 Nm
Terminal wiring method Recommended wire
Solid wire: 2.5 mm2
Twisted wires: AWG16, AWG18

Note:
1. Ferrules with insulating sleeves must be used with twisted wires.
2. Two wires can be twisted together.

Recommended ferrules
Al 1,5-8BK (for AWG16) manufactured by Phoenix Contact
Al 1-8RD (for AWG18) manufactured by Phoenix Contact
Al 0,75-8GY (for AWG18) manufactured by Phoenix Contact
Case color Munsell 5Y8/1
Case material ABS resin (self-extinguishing resin) UL94-V0
Weight Approx. 130 g
Mounting Mounted to DIN Track or via M4 screws (tightening torque: 1.2 Nm)
Dimensions 22.5 (W) × 90 (H) × 100 (D) mm

Specifications

Input frequency range 45 to 65 Hz
Overload capacity Continuous input: 115% of maximum input, 10 s max.: 125% of maximum input
Setting error Operating value Set value ±10% of rated input voltage
Operating time
Startup lock time Set value ±0.5 s
Repeat error Operating value Operating value ±2%
Error calculation: Error = ((Maximum operating value - Minimum operating value (over 10 operations))/2)/Average value × 100%
Reset value Overvoltage: Operating value x 95% ±2%
Undervoltage: Operating value x 105% ±2%
Error calculation: Error = ((Maximum reset value - Minimum reset value (over 10 resets))/2)/
Average value × 100%
Operating time Operating time repeat error: ±50 ms
Overvoltage: Measured when input suddenly changes from 70% to 120% of setting.
Undervoltage: Measured when input suddenly changes from 120% to 70% of setting.
The input voltage, however, must be between 70% and 125% of rating.
Startup lock time Startup lock time repeat error: ±0.5 s
(The operating time when the operating time is set to the minimum value and the power supply suddenly changes from 0% to 100%.)
Temperature influence Operating value
Drift based on measured value at standard temperature:
- 20 ° C to standard temperature: ±1,000 ppm/°C max.
Standard temperature to 60°C : ±1,000 ppm/°C max.
(Humidity: 25% to 80%)

Operating time
Fluctuation based on measured value at standard temperature:
- 20°C to standard temperature: ± 10% max.
Standard temperature to 60°C : ± 10% max.
(Humidity: 25% to 80%)
Humidity influence Operating value
Based on ambient humidity of 65%
25% to 80%: ± 5% max.

Operating time
Based on ambient room humidity
25% to 80%: ± 10% max.
Influence of input frequency At 45 to 65 Hz
Operating value ± 5%
Operating time ± 10%
Note: The error in the operating value and operating time under standard conditions.
Applicable standards Conforming standards EN60255-5 and EN60255-6
Installation environment (Pollution Degree 2, Overvoltage Category III)
EMC EN61326
Safety standards UL508
Insulation resistance 20 MΩ min.
Between external terminals and case
Between input terminals and output 1 terminals
Between input terminals and output 2 terminals
Between output 1 terminals and output 2 terminals
Dielectric strength 2,000 VAC for one minute
Between external terminals and case
Between input terminals and output 1 terminals
Between input terminals and output 2 terminals
Between output 1 terminals and output 2 terminals
Noise immunity 1,500 V power supply terminal common/normal mode
Square-wave noise of ±1 μ s/100 ns pulse width with 1-ns rise time
Vibration resistance Frequency 10 to 55 Hz, 0.35-mm single amplitude, acceleration 50 m/s2
10 sweeps of 5 min each in X, Y, and Z directions
Shock resistance 100 m/s2, 3 times each in 6 directions along three axes (up/down, left/right, forward/backward)
Degree of protection Terminal section: Finger protection

Note: The reset value is valid only for automatic resets.

K8AB-TH
Temperature Monitoring Relay

Ratings

Power supply voltage 100 to 240 VAC 50/60 Hz 24 VAC 50/60 Hz or 24 VDC
Allowable voltage range 85% to 110% of power supply voltage
Power consumption 5 VA max. 2 W max. (24 VDC), 4 VA max. (24 VAC)
Sensor inputs K8AB-TH11S Thermocouple: K, J, T, E; Platinum-resistance thermometer: Pt100
K8AB-TH12S Thermocouple: K, J, T, E, B, R, S, PLII
Output relay One SPDT relay (3 A at 250 VAC, resistive load)
External inputs
(for latch setting)
Contact input ON: 1 kΩ max., OFF: 100 kΩ min.
Non-contact input ON residual voltage: 1.5 V max., OFF leakage current: 0.1 mA max.
Leakage current: Approx. 10 mA
Setting method Rotary switch setting (set of three switches)
Indicators Power (PWR): Green LED, Relay output (ALM): Red LED
Other functions Alarm Mode (upper limit/lower limit), non-fail safe/fail safe selection, output latch,
setting protection, temperature unit °C/°F
Ambient operating temperature -10 to 55°C (with no condensation or icing)
Ambient operating humidity Relative humidity: 25% to 85%
Storage temperature -25 to 65°C (with no condensation or icing)

Characteristics

Setting accuracy ±2.0% of full scale
hysteresis width 2°C
Output
relay
Resistive load 3 A at 250 VAC (cosΦ = 1), 3 A at 30 VDC (L/R = 0 ms)
Inductive load 1 A at 250 VAC (cosΦ = 0.4), 1 A at 30 VDC (L/R = 7 ms)
Minimum load 10 mA at 5 VDC
Maximum contact
voltage
250 VAC
Maximum contact
current
3 A AC
Maximum switching
capacity
1,500 VA
Mechanical life 10,000,000 operations
Electrical life Make: 50,000 times, Break: 30,000 times
Sampling cycle 500 ms
Insulation resistance 20 MΩ (at 500 V) between charged terminals and exposed uncharged parts
20 MΩ (at 500 V) between any charged terminals (i.e., between input, output, and power supply terminals)
20 MΩ (at 500 V) between contacts (open)
Dielectric strength 2,000 VAC 50/60 Hz for 1 min between charged terminals of different polarity
Vibration resistance Vibration of 10 to 55 Hz and acceleration of 50 m/s2 for 5 min with 10 sweeps each in X, Y, and Z
directions
Shock resistance 150 m/s2 (100 m/s2 for relay contacts) 3 times each in 6 directions in X, Y, and Z directions
Weight 130 g
Degree of protection IP20
Memory protection Non-volatile memory (number or writes: 200,000)
Safety
Standards
Approved standards UL 61010-1, CSA C22.2 No. 1010-1, KOSHA
EMC EN 61326
Application
standards
EN 61010-1 (pollution level 2, overvoltage category II)
EMC EMI: EN 61326
Radiation Interference Field Intensity: EN 55011 Group 1 Class A
Noise Terminal Voltage: EN 55011 Group 1 Class A
EMS: EN 61326
Immunity ESD: EN 61000-4-2: 4 kV contact discharge (level 2), 8 kV air discharge (level 3)
Immunity RF: EN 61000-4-3: 10 V/m, amplitude-modulated (80 MHz to 1 GHz, 1.4 GHz to 2 GHz) (level 3)
Immunity Burst: EN 61000-4-4: 2 kV power line (level 3), 2 kV output line (relay output) (level 4),
1 kV measurement line and I/O signal lines (level 4)
Immunity Conducted Disturbance: EN 61000-4-6: 3 V (0.15 to 80 MHz) (level 3)
Immunity Surge: EN 61000-4-5: 1 kV line-to-line: power line, output line (relay output) (level 2),
2 kV line-to-ground: power line, output line (relay output) (level 3)
Commercial Frequency Immunity Magnetic Field: EN 61000-4-8: 30 A/m (50Hz) continuous time
Immunity Voltage Dip/Interrupting: EN 61000-4-11: 0.5 cycle, 100% (rated voltage)
Terminal screw tightening
torque
0.54 to 0.55 Nm
Crimp terminals Two solid wires of 2.5 mm2 or two ferrules of 1.5 mm2 with insulation sleeves can be tightened together.
Case color Munsell 5Y8/1 (ivory)
Case material ABS resin (self-extinguishing resin)
Mounting Mounted to DIN Track or with M4 screws
Dimensions 22.5 × 100 × 90 mm (W × D × H)

Setting Ranges

K8AB-TH11S

Centigrade

K8AB Series Specifications 34

Fahrenheit

K8AB Series Specifications 35

K8AB-TH12S

Centigrade

K8AB Series Specifications 37

Fahrenheit

K8AB Series Specifications 38