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CSR: Go-No Go AC Current Sensing Relay

R-K CSR AC current relay go no-go

• Self Powered

• 4 to 200 Amps AC

• 10 Amp Contact

• Screw Terminals or 

  Stranded Wire Leads

• Large Wire Thru Hole

• DIN Rail Mountable

• Compact Design

• Low Cost




AC Current Sensing

The CSR generates its own operating power supply from the monitored current line. No external power supply is needed. A current greater than the pick-up current is required to energize the output relay. The output relay will stay energized until the current in the line being monitored drops below the drop-out current level for the CSR.




Input Supply Voltage: None Required

Pick-Up Range: 5.0 Amps ±12%

Power Up Delay: 0.1Sec. Fixed

Drop-Out Range: 4.5 Amps ±7%

Drop-Out Delay: None

Frequency: 50/60Hz

Maximum Current:

    200 Amps LRA, 15 Seconds max.

    64 Amps FLA, Continuous

Reset: Automatic

Output Rating @ 25°C:

    10 Amps @ 250VAC, 30VDC (UL)

     300W (D.C.), 2500VA (A.C.) Max. switching power (resistive)  

     6,000 Full Load Electrical Cycles (UL)

    100,000 Full Load Electrical Cycles

     20,000,000 Mechanical Cycles Physical



Maximum Load Wire Diameter: 0.560” Dia.

Mounting: Surface or DIN Rail

Termination: #16 Stranded Wire Leads

Packaging: Dust Cover Weight: 18 Oz.


Ambient Temperatures

Operating: 0°C to 55°C

Storage: -10°C to 85°C


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