The APSW-3AC150 is a 3-pole AC Solid State Contactor capable of switching up to 150 amps per phase at 480 VAC.  This series of solid-state contactors feature back-to-back SCR outputs, IC logic firing compatibility and 3500V isolation between input, output and heatsink.  Supplied complete with heatsink in an encapsulated shell these relays are designed to withstand harsh environments.

These units provide DC controlled input, zero-voltage switching outputs, with an opto-isolated control input that accepts from 15 to 32 VDC.  When voltage is applied to the control input, the outputs are closed at the next zero crossing of the AC waveform; when voltage is removed from the control input, the outputs open at the next zero crossing of the AC waveform.