Struthers-Dunn Power Relay, Dpdt, 120Vac, 30A, Socket; Contact Configuration Struthers-Dunn 21XBXPL33-120VAC

The 21 series is a DPDT transfer relay rated for 30 A at 120/240 VAC resistive loads and 20 A at 28 VDC, with silver alloy contacts and a 2.4 VA coil. It operates with AC or DC input voltages, with an AC tolerance of 70% to 113% of nominal and a dropout voltage of 10% of nominal. Operate and release times are both 20 ms maximum, and dielectric strength is 500 Vrms across contacts and 1500 Vrms between insulated points. Insulation resistance is 1000 Mohms minimum at 500 VDC. The relay operates from -34°C to 74°C, is housed in a clear polycarbonate case, and mounts in the SK-TRF8-BFW-1 socket. The 21XBXPL33-120VAC variant includes a light pipe indicator and gold-diffused contacts optimized for LED loads. Weight is 7.2 oz (205 g).