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Cat. No. N145-E1-01

Phase-sequence Phase-loss Relay

 K8AB-PH

3

Specifications

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%

Storage humidity

25% to 85%

Altitude

2,000 m max. 

Voltage fluctuation range

85% to 110% of rated input voltage 

Input frequency

50/60 Hz ±5 Hz (AC power supply) 

Output relays

Resistive load

6 A at 250 VAC (cos

 φ 

= 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)

Minimum load

10 mA at 5 VDC

Maximum contact voltage

250 VAC

Maximum contact current

6 A AC

Maximum switching 
capacity

1,500 VA

Mechanical life

10,000,000 operations

Electrical life

Make: 50,000 times, Break: 30,000 times

Terminal screw tightening torque

1.2 N·m

Crimp terminals

Two solid wires of 2.5 mm

2

, two crimp terminals of 1.5 mm

2

 with insulation sleeves, can be 

tightened together

Insulation resistance

20 M

 (at 500 V) between charged terminals and exposed uncharged parts

20 M

 (at 500 V) between any charged terminals (i.e., between input, output, and power 

supply terminals)

Degree of protection

Terminal section: IP20, Rear case: IP40

Case color

Munsell 5Y8/1 (ivory) 

Case material

ABS resin (self-extinguishing resin) UL94-V0

Weight

200 g

Mounting

Mounted to DIN Track or via M4 screws

Dimensions

22.5 (W)  x 90 (H) x 100 (D) mm  

Installation environment

Overvoltage Category III, Pollution Degree 2

Application standards

EN60255-5/-6

Safety standards

EN60664-1

EMC

EMI: EN61326 Industrial applications 
Electromagnetic interference wave 

CISPR11 Group 1, Class A: CISPR16-1/-2

Terminal interference wave voltage 

CISPR11 Group 1, Class A: CISPR16-1/-2 

EMS: EN61326 Industrial applications 
Electrostatic discharge EN61000-4-2: 8 kV (in air)
Radiating radio-frequency electromagnetic field EN61000-4-3: 

10 V/m 1 kHz sine wave amplitude modulation (80 MHz to 1 GHz) 

Burst EN61000-4-4: 

1 kV (I/O signal line), 2 kV (power line)

Surge EN61000-4-5:

1 kV with line (power line), 
2 kV with ground (power line) 

Conducted RF EN61000-4-6:

3 V (0.15 to 80 MHz) 

Power frequency magnetic field immunity
EN61000-4-8: 30 A/m 
Voltage dip/short interruptions 
EN61000-4-11: 0.5 cycle, 0.180° each, polarity 100% (rated voltage) 

Summary of Contents for K8AB-PH

Page 1: ...wire power supplies One SPDT output relay 6 A at 250 VAC resistive load Relay warning status easily monitoring using LED indicator Easy wiring with ferrules 2 2 5 mm2 solid or 2 1 5 mm2 standard ferrules CE mark compliance certified by third party UL certification pending Model Number Structure Model Number Legend 1 Basic Model K8AB Measuring and Monitoring Relays 2 Functions PH Phase sequence Pha...

Page 2: ...500 VAC K8AB PH1 Rated input voltage Non isolated 200 to 500 VAC 15 VA Phase sequence phase loss operating time 0 1 s max value when rated operating voltage changes quickly from 0 to 100 Relays are normally ON and turn OFF for phase sequence or loss phase errors Resetting method Automatic reset Input frequency 45 to 65 Hz Input impedance 100 kΩ min Indicators Power PWR Green LED Relay output RY Ye...

Page 3: ...uncharged parts 20 MΩ at 500 V between any charged terminals i e between input output and power supply terminals Degree of protection Terminal section IP20 Rear case IP40 Case color Munsell 5Y8 1 ivory Case material ABS resin self extinguishing resin UL94 V0 Weight 200 g Mounting Mounted to DIN Track or via M4 screws Dimensions 22 5 W x 90 H x 100 D mm Installation environment Overvoltage Category...

Page 4: ...PH output relay is normally operative Nomenclature Front Indicators L1 L2 L3 L1 L3 L2 L3 L2 L1 L1 L2 L3 Relay Phase Loss Operation Phase Sequence Operation Input Load Alarm Input Output L1 L2 L3 L3 L2 L1 The power supply is shared with the rated in put voltage 14 12 11 Power indicator Relay status indicator Item Meaning Power indicator PWR Green Lit when power is being supplied Relay status indica...

Page 5: ...Cat No N145 E1 01 Phase sequence Phase loss Relay K8AB PH 5 Dimensions 22 5 5 90 100 5 K8AB PH ...

Page 6: ...he product 3 Do not use thinner or similar solvent for cleaning Use commercial alcohol 4 When discarding properly dispose of the product as industrial waste 5 Only use this product within a board whose structure allows no possibility for fire to escape About Installation 1 When wiring use only recommended crimp terminals 2 Do not block areas around the product for proper dissipation of heat If you...

Page 7: ...individual price of the product on which liability is asserted IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY REPAIR OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS OMRON S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED STORED INSTALLED AND MAINTAINED AND NOT SUBJECT TO CONTAMINATION ABUSE MISUSE OR INAPPROPRIATE MODIFICATION OR REPAIR Application Considerations SUITABILITY FOR USE O...

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