Schneider Electric SSP1D440BDT Solid State Relay

Schneider Electric’s SSP1D440BDT is a 40 A, single‑phase solid‑state relay (Harmony family) designed for panel‑mount installation and featuring a thermal pad to aid heat dissipation in compact enclosures. It provides DC switching for loads from 1 to 150 V DC, controlled by a DC input of 3.5 to 32 V, in a SPST‑NO configuration rated up to 40 A. By using solid‑state switching instead of mechanical contacts, the SSP1D440BDT reduces wear and arcing in DC control circuits, making it well suited for automation panels and other DC‑load applications. This device is intended for DC switching in control circuits where a compact panel‑mount form factor and a heat‑dissipating thermal pad simplify mounting on heatsinks or chassis, and is designed for industrial environments that require reliable DC switching up to 150 V and 40 A within its specified ranges.