Item # 645SR475-90-280VAC, 645S Series - Solid State On / Off Motor Relays on Struthers-Dunn

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	Item # 645SR475-90-280VAC 645S Series - Solid State On / Off Motor Relays

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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.

For Additional Configuration please contact the manufacturer.

645S Series - Solid State On / Off Relays

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645S Series - Solid State On / Off Relays - Dimensional Picture

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Specifications · Input Characteristics · Output Characteristics · Miscellaneous Characteristics

Specifications

Series		645S

Input Characteristics

Input Voltage		90-280 VAC

Input Characteristics		AC

Must Release Voltage		10VAC

Maximum Input Current		30 mA

Output Characteristics

Output Characteristics		75 A

Rated Load Current (rms)		75 A

Min. Load current to maintain on		250 mA

Non-Repetitive Surge Current (1 cycle)		1150 A

Maximum I2T for Fusing (Asquared sec)		2600A2 S

Suggested Heatsink		0.14 ºC/W+FAN(2)

Load Voltage Range		57 to 480VAC

Frequency Range		54 to 63 Hz

Peak Blocking Voltage		807 to 1200

Maximum Rate of Rise Off State Voltage (dv/dt)		507 V/uS

Max. Off state leakage current (rms)		10 mA

Max. On State Voltage Drop		1.8 VAC

Maximum Turn-On Time at 60 Hz		8.3 ms

Maximum Turn-Off Time at 60 Hz		8.3 ms

Miscellaneous Characteristics

Dielectric Strength - I or O to case		4000 Vrms

Operating Temperature Range		-30 to 80 ºC

Storage Temperature Range		-40 to 100 ºC

Weight		320 g

Input Terminal Size		M3.5

Output Terminal Size		M4

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	· 645S Series - Solid State On / Off Relays - Wiring Diagram

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		645S Series - Solid State On / Off Relays - Product Brochure (PDF, 264KB)

Item # 645SR475-90-280VAC 645S Series - Solid State On / Off Motor Relays

Series

Input Voltage

Input Characteristics

Must Release Voltage

Maximum Input Current

Output Characteristics

Rated Load Current (rms)

Min. Load current to maintain on

Non-Repetitive Surge Current (1 cycle)

Maximum I2T for Fusing (Asquared sec)

Suggested Heatsink

Load Voltage Range

Frequency Range

Peak Blocking Voltage

Maximum Rate of Rise Off State Voltage (dv/dt)

Max. Off state leakage current (rms)

Max. On State Voltage Drop

Maximum Turn-On Time at 60 Hz

Maximum Turn-Off Time at 60 Hz

Dielectric Strength - I or O to case

Operating Temperature Range

Storage Temperature Range

Weight

Input Terminal Size

Output Terminal Size