The 645S series of solid state relays uses back to back SCRs for on/control of three phase loads. Operation is three pole normally open. Inputs can be AC or DC operated. Load currents can range from 10 to 75 amps and up to a nominal voltage of 480VAC. Both random turn on or zero cross construction is available.
Additional contact configurations and coil options are available – please use the RFQ/RFI tab above to submit your request.
Additional contact configurations and coil options are available – please use the RFQ/RFI tab above to submit your request.
Unit of Measure
Input Characteristics
Input Voltage |
N/A 90-280 VAC |
Input Characteristics |
N/A AC |
Must Release Voltage |
N/A 10VAC |
Maximum Input Current |
N/A 30 mA |
Output Characteristics
Output Characteristics |
N/A 50 A |
Rated Load Current (rms) |
N/A 50 A |
Min. Load current to maintain on |
N/A 250 mA |
Non-Repetitive Surge Current (1 cycle) |
N/A 520 A |
Maximum I2T for Fusing (Asquared sec) |
N/A 1035A2 S |
Suggested Heatsink |
N/A 0.14 ºC/W+FAN(2) |
Load Voltage Range |
N/A 56 to 480VAC |
Frequency Range |
N/A 53 to 63 Hz |
Peak Blocking Voltage |
N/A 806 to 1200 |
Maximum Rate of Rise Off State Voltage (dv/dt) |
N/A 506 V/uS |
Max. Off state leakage current (rms) |
N/A 10 mA |
Max. On State Voltage Drop |
N/A 1.8 VAC |
Maximum Turn-On Time at 60 Hz |
N/A 8.3 ms |
Maximum Turn-Off Time at 60 Hz |
N/A 8.3 ms |
