FDR3-D4840Z Three Phase Solid State Relay AC480V 40A DC Control AC Solid State Relay SSR AC Three DC-AC with Fan and Radiator FDR3-D4840Z Three Phase Solid State Relay AC480V 40A DC Control AC Solid State Relay SSR AC Three DC-AC with Fan and Radiator. Sale price : $44.10 Category : Home Improvement