Part identification and mounting
The Siemens 3RT1036-1AT60 is a SIRIUS power contactor in the S2 frame size, designed for switching motor loads in industrial control panels. It mounts via screw fixing or snap-on onto 35 mm DIN rail per EN 50022, with side-by-side mounting permitted for multi-contactor assemblies.
Motor switching ratings and duty cycles
Rated at 22 kW for AC-2 duty at 400 V — this covers slip-ring motor starting and reversing applications where the contactor makes and breaks the load under current. For AC-4 (inching/plugging) the contactor carries 41 A at 400 V, which is the higher thermal stress case. Maximum switching rates are 400 cycles/hour for AC-2 and 300 cycles/hour for AC-4, so this part is not intended for high-speed jogging applications.
Coil and auxiliary ratings
The coil operates at 24 V rated value drawing 10 A — this is the inrush current for the solenoid, not the holding current. At 230 V rated value the auxiliary contacts carry 6 A, suitable for pilot duty in control circuits. The contactor's mechanical life is typically 10 million operations, with electrical life dependent on the switching category and load current.
Environmental and compliance
Operating temperature range is -25 to +60 °C, with storage from -55 to +80 °C. The front of the contactor is rated IP20 (finger-safe terminals), while the terminal area itself is IP00 — panel builders must account for this in the enclosure design. Pollution degree 3 per IEC 60947-1 applies, meaning the part is suitable for industrial environments with conductive pollution. RoHS compliance is evidenced by the substance prohibition date of 05/01/2012.