What this contactor is and where it fits
The Siemens SIRIUS 3RT1016-1AP02-ZW97 is a size S00 power contactor, the smallest frame in the SIRIUS family, designed for switching motor loads in control panels. At 45 mm wide and 72 mm deep, it mounts via screw or snap-on onto a standard 35 mm DIN rail per EN 50022, making it a compact fit for dense panel layouts where every millimeter of DIN space counts. The front face carries IP20 protection; the terminals themselves are also rated IP20, so the part is suited for enclosed panel use where no washdown or dust ingress is expected.
Key ratings and what they mean for your load
Rated for motor switching at 4.5 kW on a 500 V 50 Hz supply and 5.5 kW at 690 V, this contactor handles typical three-phase induction motors up to that power band — think small conveyors, pumps, or fan drives. The AC-2 rating at 400 V gives 4 kW, which is the duty for slip-ring motors; the AC-4 rating at 400 V is 8.5 A, covering reversing or inching applications where the contactor makes and breaks under load. For DC switching, the 24 V coil draws 10 A, dropping to 2 A at 60 V and 0.3 A at 220 V — useful for braking or DC injection circuits. The mechanical service life is rated at 30 million operations, which for a frequently cycled line means years of maintenance-free service before contact wear becomes a consideration.
Wiring and coordination
Main circuit terminals are screw-type, accepting 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or up to 2x (0.75 to 4 mm²) solid or stranded copper — the range covers most control panel wiring from signal-level to motor feeder. For short-circuit protection, Type 2 coordination (no damage to the contactor) requires a gL/gG fuse rated at 20 A; Type 1 coordination (contactor may need replacement after fault) allows a 35 A fuse. The pollution degree is 3, meaning the contactor is designed for industrial environments where conductive dust or occasional condensation may occur, not for clean-room or climate-controlled settings.
Environmental and mounting constraints
Operating temperature spans -25 to +60 °C, which covers most indoor panel environments and unheated plant floors. The maximum operating altitude is 2,000 m — above that, derating for air density and dielectric strength applies. Side-by-side mounting is permitted without derating, so you can pack multiple units on the same DIN rail at the 45 mm pitch. The 57.5 mm height keeps it below common enclosure gland-plate clearances.