S00 Frame Power Switching for Control Panels
The Siemens 3RT2018-1BB41-ZW97 is a SIRIUS-brand power contactor in the compact S00 frame size, designed for switching loads in industrial control panels. It mounts on a 35 mm DIN rail per DIN EN 60715 using either screw-fastening or the integrated snap-on clip, giving the panel builder flexibility in assembly sequence. With a 24 VDC coil and screw-type terminals, this contactor handles DC switching up to 10 A at 24 V, 2 A at 48 V or 60 V, and 1 A at 110 V. The contact ratings drop to 0.3 A at 220 VDC and 3 A at 400 VAC — the DC derating curve is steep, so confirm the load current at the actual operating voltage.
Duty-Cycle Limits and Mechanical Endurance
Switching frequency depends on the duty class: 1,000 cycles per hour maximum in AC-1 (resistive loads), 750 cycles/h in AC-2 and AC-3 (motor starting/running), and 250 cycles/h in AC-4 (plugging/inching). The AC-3e rating also caps at 750 cycles/h. These limits govern the contactor's thermal recovery between operations — exceeding them accelerates contact wear. Mechanical life is typical 30 million operations, with arcing time between 7-13 ms at DC and 10-15 ms overall. The auxiliary switch is integrated, saving a separate add-on module for control-circuit feedback.
Wiring and Panel Clearance
Terminals accept solid or stranded wire from 0.5 to 4 mm², with dual-wire capacity for 2x (0.5-1.5 mm²), 2x (0.75-2.5 mm²), or 2x 4 mm². The screw-type clamp is straightforward for panel wiring but requires a screwdriver — no push-in spring cage here. Clearance requirements: 10 mm upwards and forwards, 10 mm downwards, 6 mm at the sides. The 45 x 58 x 73 mm footprint (W x H x D) fits standard S00 slot spacing. Mounting position allows +/-180° rotation on a vertical surface and +/-22.5° tilt forward/backward.
Environmental Range and Lifecycle Status
Operating temperature spans -25 to +60 °C, with storage from -55 to +80 °C. The coil pickup is rated at 0.8 x rated voltage (19.2 VDC for a 24 V coil) with a full-scale dropout at 1.1 x rated voltage (26.4 VDC). Lifecycle stage is listed as current production. Sourced to order against the BOM; availability and current pricing confirmed at RFQ.