Siemens SIRIUS 3RT1016-2BP41 — Power Contactor, Size S00
The Siemens SIRIUS 3RT1016-2BP41 is a power contactor in the S00 frame size, designed for switching motor loads and resistive loads in control panels. It carries a 230 V AC coil and uses spring-loaded terminals on the main circuit, which eliminates the need for periodic retorquing in high-vibration environments like conveyor lines or compressor skids. Mounting is via screw or snap-on onto a 35 mm DIN rail per EN 50022, with a 45 mm width that fits standard panel spacing. The IP20 front protection means it is suitable for enclosed panel installations where no washdown or dust ingress is expected on the front face. Rated operating temperature spans -25 to +60 °C during operation, covering most indoor industrial environments without derating concerns at the warm end of a closed panel.
Motor Duty and Switching Capacity
For motor applications, the 3RT1016-2BP41 is rated at 4.5 kW at 500 V and 5.5 kW at 690 V — typical for small-to-medium induction motors on 400/480 V or 690 V three-phase systems. The AC-2 rating at 400 V is 4 kW, covering slip-ring motor duty where starting current is moderate. AC-4 switching at 400 V is rated at 8.5 A, which governs plugging and inching applications where the contactor must interrupt stalled rotor currents. The AC-12 rating of 10 A covers resistive loads like heater banks or lighting. Auxiliary contact switching capacity is specified across the voltage range: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, and 0.3 A at 220 V DC — covering both AC and DC control circuits in the same contact block.
Coil and Control Circuit
The magnet coil draws 3.3 W during both closing and holding, which simplifies transformer sizing in the control circuit — no inrush peak beyond the steady-state value. The pickup voltage threshold is 0.85 x rated (approx. 195.5 V AC), and the dropout is at 1.1 x rated (approx. 253 V AC), giving a clear operating window on a 230 V line with typical dips.
Wiring and Termination
Spring-loaded terminals accept 2x (0.25 to 2.5 mm²) solid or stranded conductors, or 2x (24 to 14 AWG). The 6 mm side clearance to adjacent devices is the minimum recommended for heat dissipation and tool access. Depth is 73 mm, height 60 mm — compact enough for shallow enclosures.
Protection and Coordination
For Type 2 coordination (no damage to the contactor under short circuit), the required upstream fuse is gL/gG 20 A. For Type 1 coordination (contactor may be damaged but no hazard to personnel), the fuse rating is 35 A. Pollution degree 3 means the contactor is rated for conductive pollution environments typical of industrial floors.