SIRIUS S00 power contactor — 24 V DC coil, spring terminals
The Siemens 3RT2015-2UB41 is a SIRIUS-brand power contactor in the S00 frame size, designed for switching motor loads in control panels and industrial machinery. Its 24 V DC coil and spring-type terminal connections on the magnet coil make it a fit for modern panels where wiring speed and vibration resistance matter. The contactor carries an auxiliary switch and is rated for main contact switching at 20–12 A.
Mounting and panel fit
Mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 60715. The 45 mm width and 73 mm depth mean it occupies one standard DIN module — a key dimension for panel fill factor. Clearance requirements: 10 mm upward, 10 mm forward, 10 mm downward, and 6 mm at the side. The mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward.
Wiring and conductor range
Accepts solid or stranded conductors from 0.5 to 4 mm², and dual conductors of the same range. The spring-type terminals eliminate the need for screwdriver torque checks — strip, insert, done. This matches typical panel-building practice for control circuits up to 4 mm².
Switching performance and operating rates
Operating rates vary by duty: 1,000 cycles/hour at AC-1, 750 cycles/hour at AC-2, AC-3, and AC-3e, and 250 cycles/hour at AC-4. Arcing time is 10–15 ms; DC switching time is 7–13 ms. The coil hold-in factor is rated at 0.8 initial, 1.1 full-scale. These figures matter for high-cycle applications like conveyor or pump cycling — AC-4 rate limits plugging and inching duty.
Auxiliary contact ratings
The auxiliary switch is rated for switching at various control voltages: 10 A at 24 V, 2 A at 48 V, 2 A at 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. At 230 V it carries a 0.75 hp motor rating. These are the numbers to check when the auxiliary feeds a PLC input or another contactor coil.