Struthers-Dunn Relay, 24Vac, 40A, Dpdt, Din Rail; Contact Configuration Struthers-Dunn 450XBX40-24VAC

The 450 series is a heavy duty power relay with a DPDT contact configuration (2 Form C), rated for 40 amps at 277 VAC or 240 VAC, and 40 amps at 28 VDC. It features a Class F (155°C) insulation system, mechanical life of 10,000,000 cycles, and electrical life of 100,000 cycles. The relay supports DIN rail and panel mounting, has a 24 VAC coil with 12 Ω resistance, and operates within -55°C to 70°C ambient temperature. It meets UL 508 and UL 60947-1 standards, includes AgSnO2 contacts, and has a dielectric strength of 2200 VAC between coil and contacts. Weight ranges from 227 to 311 g.