What the ratings mean for fit
The 3RT1016-2WB41 is a SIRIUS power contactor in size S00, the smallest frame in the series, designed for switching motor loads up to 5.5 kW at 690 V. The 24 VDC coil draws 1.4 W on both closing and holding — a single-supply DC coil that stays at the same power draw once sealed, so the control transformer or power supply doesn't see a surge after pickup. Pickup voltage is 0.85 x rated (20.4 V), dropout at 0.15 x rated (3.6 V); per the datasheet, the coil holds reliably down to 18 V but drops out below that threshold. The spring-loaded main terminals accept 2x (0.25 to 2.5 mm²) solid or stranded, or 2x (24 to 14 AWG), which covers the typical motor-circuit wiring for this frame size. The contactor mounts via screw or snap-on onto a 35 mm DIN rail per EN 50022. Side-by-side mounting is permitted with a 6 mm gap at the side for heat dissipation. The IP20 rating on the front and terminals means it's protected against solid objects larger than 12 mm — standard for enclosed panel installation, not for washdown or outdoor exposure. Pollution degree 3 (conductive pollution) is assumed, which is typical for industrial control panels where the contactor sits inside a cabinet. Rated operational current varies by duty: at AC-1 (resistive) it carries 10 A at 230 V, 3 A at 400 V. For motor switching, the AC-2 rating at 400 V is 4 kW, and AC-4 (plugging/inching) at 400 V is 8.5 A. The DC switching ratings are 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V — these are the maximums for resistive DC loads; inductive DC loads will need derating. Mechanical life is 30 million operations typical, which is standard for a contactor of this size in high-cycling applications like conveyors or packaging lines.
Coordination and protection
For type of coordination 1 (no damage to the contactor under short circuit, but may require replacement of the contactor), the required upstream fuse is gL/gG 35 A. For type of coordination 2 (contactor remains operational after clearing the fault), the fuse is gL/gG 20 A. The contactor is equipped with a built-in varistor surge suppressor across the coil, so no external suppression module is needed for the DC coil circuit. This simplifies panel wiring and reduces component count.