Siemens 3RT2026-1BB40 Industrial DC Contactor

The Siemens 3RT2026-1BB40 is a 3-pole SIRIUS power contactor with a 24 V DC coil, designed for AC-3e/AC-3 duty in industrial motor-control applications. It provides three main contacts and an integrated auxiliary contact pair (1 normally open and 1 normally closed) via screw terminals in a compact size S0 housing, enabling signaling and interlocking without external devices. Rated for up to 25 A and 11 kW at 400 V, the unit is suitable for starting and stopping 3‑phase motors and other inductive loads from a 24 V control signal. The device supports DIN-rail or panel mounting for flexible installation in control cabinets, and its screw-terminal connections ensure a secure, vibration-resistant link to field wiring.