Struthers-Dunn
Struthers-Dunn
407 East Smith Street, Suite B
Timmonsville, SC 29161
Telephone: (843)346-4427
Fax: (843)346-4465
Email: info@struthers-dunn.com
Website: www.struthers-dunn.com
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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.
UL Recognized          RoHS Compliant
645S Series - Solid State On / Off Relays
645S Series - Solid State On / Off Relays - Dimensional Picture
Unit of Measure
1 

Item #

Input Voltage

Output Characteristics

645SZ475-3-32VDC N/A 3-32 VDC N/A 75 A
645SR450-3-32VDC N/A 3-32 VDC N/A 50 A
645SZ450-90-280VAC N/A 90-280 VAC N/A 50 A
645SZ475-90-280VAC N/A 90-280 VAC N/A 75 A
645SR450-90-280VAC N/A 90-280 VAC N/A 50 A
645SR475-90-280VAC N/A 90-280 VAC N/A 75 A
Unit of Measure
1