What This Part Is and Where It Fits
The Siemens 3RT1016-2BM41 is a SIRIUS power contactor in the compact S00 frame, designed for switching motor loads and resistive loads in control panels. It mounts via screw or snap-on onto 35 mm DIN rail per EN 50022, making it a direct fit for standard industrial enclosures. Rated for AC-3 duty at 4.5 kW on 500 V and 5.5 kW on 690 V, it handles three-phase induction motors driving pumps, conveyors, and fans. The AC-2 rating of 4 kW at 400 V covers slip-ring motor starting, while AC-4 at 8.5 A on 400 V suits reversing or inching applications. The coil is a 24 VDC type with a pickup threshold of 0.85 x rated voltage and a dropout of 1.1 x rated voltage, drawing 3.3 W during both closing and holding. This low holding power reduces heat buildup in dense panels.
Key Ratings and What They Mean for Fit
The AC-12 rating of 10 A maximum operating current defines its resistive load capability — useful for heater banks or transformer primary switching. The AC-3 motor ratings at 4.5 kW (500 V) and 5.5 kW (690 V) are the figures to match against your motor nameplate for full-voltage starting. Spring-loaded terminals on the main circuit accept 2x (0.25 to 2.5 mm²) solid or stranded, or 2x (24 to 14 AWG). The side clearance of 6 mm allows side-by-side mounting without derating, saving rail space in high-density layouts. Pollution degree 3 and IP20 on the front and terminals mean it's suited for industrial environments with conductive dust or occasional condensation, but not for washdown zones. Operating temperature spans -25 to +60 °C, with a maximum altitude of 2000 m. Fuse coordination: type 1 requires a 35 A gL/gG fuse, type 2 requires a 20 A gL/gG fuse. This lets you balance fault protection against component survival after a short circuit.