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Relays Amp Contactors
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Selecting a Solid State Relay or a Solid State Contactor ...
www.crydom.comNote: Solid State Relays and Solid State Contactors have no wear out mechanism, and as such, if properly selected based upon these criteria, will have a significantly longer life expectancy (>25 years in most cases) than similarly rated mechanical relays or contactors.
UNDERSTANDING SCR POWER CONTROLS
www.avatarinstruments.comMECHANICAL RELAYS/CONTACTORS The up front cost for a simple relay is low on low power levels. As the power level goes up, the price rises. Since the mechanical relays will get dirty, arc and burn out, the relay has to be replaced every so many cycles. The labor cost associated with this is often overlooked. Due to the slow cycle time inherent for