Struthers-Dunn B1BXX125 Relay

Struthers-Dunn B1BXX125 Relay is a 450-series heavy‑duty power relay from Struthers‑Dunn, designed for robust industrial switching. The BXX designation identifies a DPST (two Form A) contact configuration, enabling two independent normally open circuits to operate from a single coil. In the 450‑series catalog, relays are rated up to 40 A, with coil voltages offered in the 110/125 VAC family; the B1BXX125 variant sits within that range and supports the standard coil and contact configurations used in industrial controls. The series supports a coil suppression diode option for back‑EMF protection and quieter operation, as shown in the wiring diagrams of the 450‑series sheets. Typical applications include traffic cabinet relays, power generation controls, HVAC and broader industrial automation tasks where reliable high‑current switching is required. For precise electrical ratings, mounting arrangements, and coil specifications specific to this exact suffix, consult Struthers‑Dunn’s official 450‑series data and catalog entries.