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SOLID STATE RELAY
SOLID STATE RELAY
SOLID STATE RELAY

Solid Sate Relay (Triacs and SCR Type)

Single phase SSR - 1A to 1200A 
Dual solid state relay (2 form A)25A to 60A. 
Quad solid state relay (4 form A)25A to 40A. 
Three phase SSR - 10A to 500A, 600A to 1200A solid state contactors 
Motor reversing SSR - 1KW to 7kW 
Capacitor SSR single phase - 10A to 350A 
Capacitor SSR three phase - 10A to 120A 

The Solid State Relay (SSR) are a series of single-pole, two-poles(dual output),three-poles(three phase),four-poles(quad output).normally open, solid state switching devices with no moving parts, capable of tens of millions of cycles of operation. It is designed to control 120V, 240V or 480V (up to 660V) alternating current (VAC), and provides zero voltage switching and 2500VAC isolation between the load terminals and the control signal. A control signal causes the solid state relay (SSR) to switch the ac load ON or OFF just as a conventional mechanical contact switch does but with none of the problems associated with moving contact relays, such as corrosion, pitting, arcing, radio frequency interference (RFI) and bounce. The result: Much longer life for the solid state relay (SSR). 

Our solid state relay is designed around a pair of SCR's mounted on a heat-spreading metal base to eliminate thermal fatigue failures. To dissipate the heat developed naturally in an solid sate relay (SSR) due to a nominal voltage drop across the device, the solid state relay must be mounted on a Finned Heat Sink (FHS), or on a metal plate of adequate size. It is advisable to install an solid state relay where the ambient temperature is relatively low because its current-switching rating is decreased as its temperature increases. 

Control resistance heaters up to 40 kW use solid state relay in conjunction with lower-rated temperature controllers. Three-phase loads can be controlled using 2 or 3 SSR's. Use 3 SSR's for Y-phase loads using a neutral line. Three solid state relays are also used when there is no neutral load to provide redundancy and extra assurance of control. Two SSRs will control "delta" loads

 
SOLID STATE RELAY
SOLID STATE RELAY
SOLID STATE RELAY

 

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