Siemens 3RT2026-1AC20 Three-Phase AC Contactor

Siemens 3RT2026-1AC20 is a three-pole power contactor in the SIRIUS 3RT2 family, engineered for AC-3e duty in motor-control circuits. It uses a 24 V AC coil to energize three normally open contacts, enabling safe and reliable switching of three-phase loads up to 25 A and up to 11 kW at 400 V. The compact size corresponds to the S0 class, making it a common choice for control panels and motor starters where space is at a premium and quick, repeatable switching is essential. With a 3-pole arrangement and Siemens’ proven contactor design, it’s suitable for starting and stopping three-phase motors, drives, conveyors, and pumps in industrial equipment, and it integrates smoothly with the broader Siemens automation ecosystem and standard protective and auxiliary components when configured in a complete motor-control circuit.