SIRIUS 3RT1015-2BF41 — 110 VDC Coil, Spring-Loaded, Size S00
The Siemens 3RT1015-2BF41 is a SIRIUS power contactor in frame size S00. The 110 VDC coil draws 3.3 W during both closing and holding. Pick-up voltage is 0.85 × rated; drop-out is 1.1 × rated.
Termination and Mounting
Both main and control circuits use spring-loaded terminals, accepting 2x (0.25 … 2.5 mm²) solid or stranded — no screw torque to verify, no loosening under vibration. The 45 mm width and 73 mm depth fit a standard 35 mm DIN rail (DIN EN 50022) with screw or snap-on mounting. Side-by-side mounting is permitted, so multiple contactors pack tight on the rail without derating for heat buildup.
Switching Ratings and Duty
Rated operational current at AC-12 (resistive) is 10 A maximum. For motor loads: AC-2 at 400 V delivers 3 kW; AC-4 at 400 V delivers 6.5 A. At 400 V AC, the contactor switches 3 A; at 690 V AC, 4 kW. DC switching is specified per voltage: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V. Mechanical endurance is 30 million cycles — a long-life figure for a size S00 frame, suitable for high-cycle conveyor or pump applications where the contactor operates frequently.
Coordination and Protection
Type 1 coordination (no damage to the contactor after a short circuit, but may need replacement) requires a 35 A gL/gG fuse. Type 2 coordination (contactor remains usable after clearing the fault) requires a 20 A gL/gG fuse. Pollution degree 3 (conductive pollution or dry non-conductive that becomes conductive due to condensation) is the rating — typical for industrial control panels not in a sealed clean room.