The Siemens 3RT2015-2BW41 is a SIRIUS power contactor in the compact S00 frame, with a 48 VDC coil and spring-type terminals. It mounts on 35 mm DIN rail per DIN EN 60715 via screw or snap-on, and the mounting position allows ±180° rotation on a vertical surface plus ±22.5° tilt forward/backward — flexible for tight panel layouts.
DC switching capacity and what it means for your load
The DC switching ratings tell you exactly what this contactor can break at different voltages: 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 3 A at 400 V. These are the maximum currents the contacts can safely interrupt at those DC voltages — critical for DC motor brakes, solenoid valves, or DC bus switching where arc extinction is harder than with AC. The arcing time is 10 to 15 ms, and the DC operating time is 7 to 13 ms, so it clears faults fast.
Mechanical life and switching frequency
Rated for 30 million mechanical operations typical, with maximum switching rates of 1000 cycles/hour at AC-1, 750 at AC-2 and AC-3, and 250 at AC-4. That means it handles high-speed cycling in conveyor zones or packaging lines without wearing out prematurely — the AC-3 rate (750/h) is the one to watch for motor starting duty.
Panel fit and wiring
Dimensions are 45 mm wide, 70 mm high, 73 mm deep — the S00 frame is the smallest Siemens contactor chassis, so it fits densely on the DIN rail. Spring-type terminals accept solid or stranded wire from 0.5 to 4 mm², or 2x (0.5 to 4 mm²) for looping. Clearance: 10 mm upwards and forwards, 10 mm downwards, 6 mm at the sides. Operating temperature range is -25 to +60 °C; storage from -55 to +80 °C.