The Siemens 3RT1036-3AB00 is a SIRIUS-brand S2-frame power contactor, screw-type terminals, rated for motor switching at 22 kW on a 400 V AC-2 duty cycle and 41 A on AC-4 (reversing or inching duty). That AC-2 rating — 22 kW at 400 V — covers wound-rotor motor starting and braking, where the contactor opens under load each cycle. Front-face protection is IP20; the terminal area is IP00 — the panel enclosure provides the rest.
The lifecycle stage for the 3RT1036-3AB00 is listed as current — no phase-out or last-time-buy notice is in effect. It remains a standard catalog line within the SIRIUS contactor family. Substance prohibitance (RoHS) compliance date is 05/01/2012, meaning the part meets EU RoHS requirements for materials restriction since that date.
Screw terminals on the main circuit accept solid conductors 2x (0.25... 2.5 mm²) or stranded 2x (0.75... 25 mm²). The minimum cross-section at 40 °C is 16 mm² — size the gland plate and wireway accordingly. Coil draws at 50 Hz, 24 V rated value. These timing figures matter for coordination with upstream short-circuit protection. Electrical life varies by duty: AC-1 maximum 1,000 cycles/hour, AC-2 maximum 400, AC-3 maximum 800, AC-4 maximum 300.
Auxiliary contact ratings and motor power at higher voltages
Auxiliary contact ratings: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V. These cover control-circuit switching for PLC inputs, pilot lights, or interposing relays. Motor power at 500 V is 30 kW; at 690 V it is 11.4 kW. The 690 V figure is lower because the current limit (not voltage) governs the thermal capacity at that voltage class.