Siemens 3RT2026-1BB40 Three-Phase AC Contactor

Siemens 3RT2026-1BB40 is a compact three-pole power contactor from the Sirius 3RT2 family, rated for AC-3e/AC-3 duty with a 25 A current rating and an 11 kW motor load at 400 V. The coil operates on 24 V DC, allowing reliable actuation from typical PLC outputs, while a single normally open and a single normally closed auxiliary contact (NO + NC) provides essential signaling or interlock capability. Screw-terminal connections ensure secure field wiring, and the unit’s S0 size supports a space-efficient installation in control panels. This 3-pole device is well-suited for starting and stopping three-phase motors in applications such as conveyors, pumps, and fans, where compact, robust motor control is required within a Siemens automation ecosystem. Compatible with other Siemens Sirius components, the 3RT2026-1BB40 enables straightforward integration into standard control architectures for reliable, maintenance-friendly operation.