Power Contactor for Motor and Resistive Loads
The Siemens SIRIUS 3RT1036-1BB48-3MA1 is a size S2 power contactor rated for switching motor loads up to 30 kW at 500 V in AC-3 duty, and 11.4 kW at 690 V in AC-3. The 24 V DC coil pulls in reliably across the operating range, with a pickup voltage of 0.8 x nominal and a dropout threshold that keeps it latched through brief sags. Mechanical life is rated at 10 million operations typical, so it's built for high-cycle conveyor or pump starts. The contactor uses screw-type terminals on the main circuit, accepting stranded conductors up to 2x 25 mm² and solid up to 2x 4 mm². That's enough for the full rated current without needing a lug adapter on most panel builds. Front IP20 keeps fingers off live parts; the terminal area is IP00, so maintain clearance per IEC 60947-1 when wiring.
DIN Rail Mounting and Panel Fit
Fastens by screw or snap-on onto 35 mm DIN rail per EN 50022. The 55 mm width and 112 mm height fit standard S2 contactor spacing — side-by-side mounting is permitted, so you can gang multiple units without a gap block. Depth is 179 mm, which clears most 200 mm deep enclosures with room for wiring ducts. Operating temperature range is -25 to +60 °C, storage from -55 to +80 °C. Pollution degree 3 means it's rated for conductive environments typical of industrial control panels — no additional conformal coating required for most factory-floor conditions.