Siemens 3RT2035-1AK60 Three-Phase AC Contactor

Siemens 3RT2035-1AK60 is a three-pole Sirius power contactor designed for AC-3e/AC-3 duty, rated to switch up to 41 A and handle up to 18.5 kW at 400 V. The coil is 110 V AC, compatible with 50 Hz / 60 Hz mains, and the device includes one normally open and one normally closed auxiliary contact, all terminated on screw terminals in size S2. As part of the Sirius 3RT2 family, this 3RT2035-1AK60 provides reliable motor control for starting and stopping three-phase loads such as conveyors, pumps, fans, and other automation equipment in control panels and machine rooms. The unit’s compact S2 enclosure and screw-terminal termination support straightforward panel mounting and wiring, while its AC-3 rating ensures suitability for direct motor switching without an intermediate starter. The 1NO+1NC auxiliary configuration expands control options, allowing feedback and interlock circuits to be integrated with PLCs and HMI control schemes without adding separate devices.