Siemens 3RT2015-2BF41 — SIRIUS Size S00 Power Contactor, 110 V Coil
The Siemens 3RT2015-2BF41 is a SIRIUS-brand power contactor in the Size S00 frame, with a 110 V AC coil and spring-type terminals for the magnet coil. It is a current-production part, meaning no lifecycle concerns for new designs or BOM maintenance. At 45 mm wide, 70 mm tall, and 73 mm deep, this contactor fits standard 35 mm DIN rail per DIN EN 60715, with screw or snap-on mounting. Spring-cage terminals accept 0.5 to 4 mm² solid or stranded wire, with double-wire capability (2x 0.5–4 mm²). No screw torque to verify — consistent connection quality on the line.
Ratings and Operating Envelope
The main contacts are rated for 20 to 12 A depending on duty (full-scale value 1.1). Switching frequency varies by load: up to 1,000 cycles/hour at AC-1 (resistive), 750 cycles/hour at AC-2 and AC-3 (motor starting/running), and 250 cycles/hour at AC-4 (plugging/inching). The AC-3e rating also allows 750 cycles/hour. The built-in auxiliary switch handles DC loads: 10 A at 24 V, 2 A at 48/60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 3 A at 400 V. DC switching time is 7–13 ms.