The Siemens SIRIUS 3RT2015-2WB41 is a Size S00 coupling contactor designed for switching loads in control circuits where galvanic isolation between the coil and the main contacts is required. Its 24 V DC coil (rated value 24 V) switches up to 10 A at 24 V rated value, making it a fit for PLC output isolation or signal-level interposing in a panel.
Coil and switching ratings
The coil pulls in at 85 % of rated voltage (initial value 0.85) and drops out at 1.85 times rated (full-scale value 1.85). That dropout margin means the contactor stays sealed through brief sags on a 24 V DC bus — useful in a mill control cabinet fed by a shared power supply. Switching capacity drops with voltage: 10 A at 24 V, 2 A at 48 V and 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. The DC arcing time runs 10–15 ms, with an operate time at DC of 5–20 ms.
Termination and mounting
Spring-type terminals accept solid or stranded wire from 0.5 to 4 mm², including two conductors per clamp (2x 0.5–4 mm²). No screw torquing needed — strip to the right length and push in. The contactor snaps onto 35 mm DIN rail per DIN EN 60715, or can be screw-mounted. It takes 45 mm width on the rail, 70 mm height, 121 mm depth. Clearance: 10 mm upwards, 10 mm forwards, 10 mm downwards, 6 mm to the side.