Solid-state relays

July 2009 Operator Interfaces, Switches & Relays

Wattcor ultra-reliable solid-state switches for power up to 600 A.

The compact Gefran Wattcor W211/212 line (high power SSRs) offers reliable switching of large resistive loads and has low heat dissipation. As an alternative to thyristor and contactor switching devices the Wattcor SSRs offer a number of advantages that have made these units popular:

* Designed without any moving parts they may be used in dusty and rough environments where contactors could suffer from reduced operating life.

* Robust, durable reliable performance.

* Electronic overload protection up to 13 times nominal current.

* Load failure detection.

* Short circuit or current failure detection.

* Available in high current ratings as well as high switching voltage.

* Compact space saving construction.

* Alarm relay output for fault conditions.

Unitemp supplies a wide range of products including controllers, SSRs, sensors, transducers and indicators.

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