Solid State Relays: Type - Solid State Relay; Voltage Rating - Control - 140V AC; Voltage Rating - Load - 660V AC; Current Rating - Load - 55A; Switching Function - Zero Cross; Contact Form - SPST-NO; Mounting - DIN Rail Mount; Terminals - Screw; Switching Method - SCR; Voltage Range - Control - 90-140V AC; Voltage Range - Load - 48-660V AC; Current Range - Load - 0.25-55A; Transient Overvoltage Max. - 1200V; Dielectric Strength - 4000V AC; Temperature Rating - -40 to 80 deg C (-40 to 176 deg F); Dimensions - nominal - 4.30x1.75x1.00" (109.0x44.5x25.4mm); Additional Information - LED Status Indicator, SSR with Integrated Heat Sink; Manufacturer Series - CMR60 Series