SIRIUS 3RT2015-4AB01 — 24 V Coil, Size S00 Power Contactor
The Siemens SIRIUS 3RT2015-4AB01 is a Size S00 power contactor with a 24 V 50/60 Hz coil, designed for screw and snap-on mounting onto 35 mm DIN rail per DIN EN 60715. It includes an integrated auxiliary switch, making it a standard building block for motor control in panels where a compact footprint — 45 mm wide, 58 mm high, 73 mm deep — matters.
The AC-3 switching frequency is rated at a maximum of 750 operations per hour, which covers most conveyor and pump cycling rates without derating. For heavier AC-4 duty (inching or plugging), the maximum drops to 250 1/h — important when the application calls for frequent reversing. The auxiliary contact is rated for 10 A at 24 V, 3 A at 400 V, and 0.75 hp at 230 V, so it can directly pilot a small motor starter or indicator lamp without an interposing relay. Mechanical service life is listed at 30 million operations typical, which is high for a Size S00 frame and reflects the SIRIUS series' design for long service in high-cycle applications like packaging lines or material handling.
Coil connection uses a ring cable lug, so factor that into your wiring plan.
The Size S00 frame is the smallest in the SIRIUS contactor range, suited for motors up to roughly 5.5 kW at 400 V AC-3 (check the specific motor rating against the contactor's AC-3 current rating). The 24 V 50/60 Hz coil is standard for PLC-controlled panels where 24 VDC control power is already available.