What This Part Is and Where It Fits
The Siemens 3RT1016-1BB41-ZW97 is a SIRIUS power contactor in size S00, designed for switching motor loads and resistive circuits in industrial control panels. It mounts via screw or snap-on onto a 35 mm DIN rail per DIN EN 50022, so it drops into any standard panel enclosure without adapter plates. The 24 VDC coil draws 3.3 W for both closing and holding, which means the power supply sizing is straightforward — no inrush spike to over-dimension for. Rated for pollution degree 3, it handles the conductive dust and humidity typical of factory-floor cabinets without derating.
Key Ratings — What They Mean for Your Circuit
The AC-12 operating current is 10 A, which is the rating for resistive loads like heaters or lighting ballasts — that's the full continuous capability through the main contacts. For motor switching, the AC-3 rating (not directly listed here but implied by the 4 kW at 400 V AC-2 and 8.5 A AC-4) tells you this contactor handles small motors up to about 4 kW at 400 V under normal starting duty. The DC switching ratings matter if you're using it for DC loads: 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 maximum break currents for DC circuits — DC arcs are harder to extinguish than AC, so these numbers are lower than the AC ratings. If you're switching a DC brake coil or a solenoid valve, stay within these curves. For short-circuit protection, Type 2 coordination (minimal damage to the contactor) requires a gL/gG fuse rated 20 A. Type 1 coordination (contactor may need replacement after fault) allows a 35 A fuse. This is your selectivity planning number — coordinate downstream so the fuse clears before the contactor welds.
Mounting and Wiring Details
The contactor is 45 mm wide, 57.5 mm tall, and 72 mm deep — that's a compact footprint for a size S00 device. Side-by-side mounting is allowed with a 6 mm gap to the side, so you can pack multiple contactors on a rail without forced air, but keep that 6 mm for heat dissipation. Screw-type terminals on the main circuit accept 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 wire. AWG equivalents are 2x (20–16), 2x (18–14), and 1x 12. The front has IP20 finger protection, so the panel builder doesn't need additional terminal shrouds for touch safety.
Lifecycle and Sourcing Reality
The closest functional peer is the 3RT1015-1BB42, which shares the same size S00 frame and 24 VDC coil but has a lower AC-12 current rating (typically 7 A vs 10 A) and different terminal style. If your load is under 7 A and you need spring-cage terminals, that's the alternate — but for 10 A resistive or the full motor rating, stick with this order code.