The Siemens 3RT1016-1BG41 is a SIRIUS power contactor in the size S00 frame — the smallest in the SIRIUS contactor family, built for switching motor loads and resistive circuits in control panels up to 5.5 kW at 690 V. Its coil is rated 125 VDC, and it picks up at 85% of that (about 106 V) and drops out at 110% (about 138 V) — so you need a clean DC supply that stays within that band. The main contacts handle 10 A at 24 VDC, 2 A at 60 VDC, 1 A at 110 VDC, and 0.3 A at 220 VDC — that DC switching curve is the one that matters for breaking inductive loads like DC motor brakes or solenoid valves. On AC, it's rated 6 A at 230 V, 3 A at 400 V, and can handle 4.5 kW at 500 V and 5.5 kW at 690 V in AC-3 duty — that's the motor-switching rating, so it'll start and stop a 5.5 kW squirrel-cage motor on a 690 V line. For tougher motor duty like reversing or plugging (AC-4), it's rated 8.5 A at 400 V; for resistive loads (AC-12), it goes to 10 A maximum.
Wiring and terminal details
Main circuit terminals are screw-type, accepting 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 — also accepts AWG 20–16, 18–14, and single 12 AWG. For short-circuit protection with type 2 coordination (no welding), use a gL/gG fuse rated 20 A; for type 1 (welding allowed but safe), a 35 A fuse works.