What it is and what it does
The Siemens 3RT1016-1BE41-ZX95 is a SIRIUS power contactor in the S00 frame size, designed for switching motor loads and resistive circuits in industrial control panels. It snaps onto a 35 mm DIN rail per DIN EN 50022 and uses screw-type terminals for the main current circuit. Rated for 10 A at 24 V DC (AC-12 duty), it handles control-circuit switching at that voltage level. For motor loads, it carries 4 kW at 400 V AC-2 and 8.5 A at 400 V AC-4, covering frequent start-stop and reversing applications.
What the ratings mean for fit
The AC-4 rating of 8.5 A at 400 V is the one that governs plugging and inching duty — the kind of switching that wears contacts faster than a simple AC-3 start. If your application cycles the motor under load, that's the number to match against your actual running current. Coil holding power sits at 3.3 W DC, which keeps the thermal load on the control transformer low in a multi-contactor panel. The magnet coil's closing and holding power are identical, meaning the DC coil doesn't need a separate economy resistor. With pollution degree 3 and IP20 on the front and terminals, this contactor is built for the inside of a cabinet in a typical industrial environment — not washdown or outdoor exposure. The 6 mm side clearance for side-by-side mounting lets you pack multiple units tight on the rail.