SIRIUS 3RT1016-1AU02 — Panel Fit and Rating
The Siemens SIRIUS 3RT1016-1AU02 is a Size S00 power contactor designed for snap-on mounting onto a 35 mm DIN rail per EN 50022, making it a direct fit for standard control panel enclosures. Its 45 mm width and 57.5 mm height with a 72 mm depth mean it occupies minimal rail space, and the IP20 protection on the front and at the terminals is standard for enclosed panel installation. The coil is rated for 240 V at both 50 Hz and 60 Hz, with an operating range of 0.8 to 1.1 at 50 Hz and 0.85 to 1.1 at 60 Hz. For motor loads, the AC-2 rating at 400 V is 4 kW, and the AC-4 inching duty rating is 8.5 A at 400 V — that tells you this contactor handles frequent jogging or reversing without derating prematurely. The main circuit uses screw-type terminals accepting solid conductors from 2x 0.5 mm² up to 2x 4 mm² (or 2x AWG 20 to 1x AWG 12), which covers typical motor feeder wiring in industrial panels.
Short-Circuit Coordination and Sizing
For Type 1 coordination, the required upstream fuse is gL/gG 35 A; for Type 2 coordination, it drops to gL/gG 20 A. This directly affects panel SCCR planning — Type 2 keeps the contactor usable after a fault, Type 1 allows replacement. The maximum operating current in AC-12 duty (resistive load) is 10 A, which is also the rating for the auxiliary contacts at 24 V — so if you're switching a PLC output or a small solenoid, stay under that.
Lifecycle and Sourcing Reality
The mechanical endurance is listed at 30 million operating cycles, which is typical for a Size S00 frame — expect it to outlast the panel's service life in most switching applications.
Environmental and Mounting Constraints
Operating temperature range is -25 to +60 °C, and it is rated for a maximum altitude of 2000 m without derating. The degree of pollution is 3 (conductive pollution or dry non-conductive pollution that becomes conductive), so it is suitable for industrial environments but not clean rooms. Side-by-side mounting is permitted with a minimum 6 mm clearance at the side — no forced spacing gaps, which helps when packing multiple contactors on a rail.