Collection
DREL solid state relays and SCR power controllers - factory-direct components with published specifications and application notes.
DREL SSR480D zero-cross solid state relay. A 3-32 VDC control input switches 40 A of 40-480 VAC load with no contacts, no arcing and long service life for heating, motor and automation loads.
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Read the SSR vs SCR selection guide before choosing a device.
An SSR switches the load fully on or off; an SCR module regulates voltage and power continuously from a 4-20 mA signal. Compare working principles, applications and the checks to run before ordering.