Siemens SIRIUS 3RT1036-1AB00-1AA0 — Power Contactor, S2 Frame, 24 V 50 Hz Coil
The Siemens SIRIUS 3RT1036-1AB00-1AA0 is a size S2 power contactor rated for motor switching at 30 kW AC-3 at 500 V and 22 kW AC-2 at 400 V, with an AC-4 rating of 41 A at 400 V for reversing or inching duty. The 24 V 50 Hz coil draws 10 A at rated voltage, with an operating range of 0.8 to 1.1 times nominal at 50 Hz.
Motor Duty Ratings & Switching Performance
The AC-3 rating of 30 kW at 500 V covers most 400 V class motors up to 30 kW (typically 60 A full-load current for a 30 kW 4-pole). At 690 V the AC-3 rating drops to 11.4 kW — this is the limit for 690 V applications, not a derating curve. AC-2 duty (slip-ring motors, wound-rotor) is rated 22 kW at 400 V. AC-4 (plugging, inching) is rated 41 A at 400 V, which is about 18.5 kW for a typical motor. Maximum switching rates: 1000 ops/h for AC-1 resistive loads, 800 ops/h for AC-3, 400 ops/h for AC-2, and 300 ops/h for AC-4.
Termination & Wiring
Solid wire: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), max 2x (0.75 to 4 mm²). Stranded wire: 2x (0.75 to 25 mm²). For the main circuit, solid or stranded accepts 2x (0.75 to 16 mm²). At 40 °C ambient, the minimum permissible conductor is 16 mm² — this is the thermal limit for full rated current, not a wiring convenience. Dimensions: 112 mm height, 55 mm width, 115 mm depth. The S2 frame is the standard size for this power class; it occupies one DIN-rail module width of 55 mm.
No specific UL/CSA/CE marks are listed in the spec record, but as a Siemens SIRIUS product it typically carries CE and may have UL/CSA recognition — verify for your jurisdiction.