Siemens Sirius 3RT1026-1BB40 is a three‑pole AC‑3 contactor (motor starter) with a 24 V DC control coil, rated for 25 A and up to 11 kW at 400 V. In a size S0 enclosure with screw terminals, it provides three normally open contacts for switching a 3‑phase motor load and is intended for upright mounting in control panels. It is part of the Sirius 3RT family of motor starters designed for reliable industrial motor control.
