The Siemens 3RT2015‑1BB42 (SIRIUS 3RT2 series) is a compact 3-pole power contactor ideal for switching motors and loads up to 7 A (3 kW @ 400 VAC). With a 24 V DC coil, built-in 1 normally closed auxiliary contact, and screw terminals, it offers reliable performance in industrial control panels.

Key Features & Specifications

Model / P/N: 3RT2015‑1BB42
Size: S00 (DIN-rail/panel mount)
Main Contacts: 3-pole, NO ×3 for load switching
Contactor Rating (AC‑3): 7 A @ 400 VAC (3 kW), 6 A @ 500 VAC, 4.9 A @ 690 VAC
Coil Voltage: 24 V DC, coil consumption ~4 W
Auxiliary Contact: 1 NC screw‑terminal contact for interlock or signaling
Electrical Life: Rated for over 30 million mechanical operations; AC-3 available in datasheet
Operating Temperature: –25 °C to +60 °C
Insulation: 690 V rated; surge withstand 6 kV
Mounting: DIN-rail TS35 snap-on or screw mount; compact footprint (58 × 45 × 73 mm)
Certifications: CE, UL, CSA, RoHS, CCC, EAC, VDE, DNV‑GL, ABS
Weight: ~0.292 kg

Siemens – 3RT2015-1BB42 – SIRIUS S00 Power Contactor, 7 A @ 400 VAC, 24 VDC Coil

Siemens – 3RT2015-1BB42 – SIRIUS S00 Power Contactor, 7 A @ 400 VAC, 24 VDC Coil