Siemens SIRIUS 3RT1016-1AK61 — Power Contactor, Size S00, 690 V 5.5 kW
The Siemens SIRIUS 3RT1016-1AK61 is a size S00 power contactor rated for 5.5 kW at 690 V, with an AC-4 current rating of 8.5 A at 400 V — meaning it handles the high-stress reversing or inching duty cycles typical of conveyor drives and hoist controls without derating the main contacts. Mounts via screw and snap-on onto 35 mm standard mounting rail per DIN EN 50022, with a 45 mm wide footprint that leaves room for auxiliary contact blocks or overload relays in a tightly packed panel. IP20 on the front and at the terminals, so it is suited for enclosed control panels where the contactor is not directly exposed to washdown or dust ingress.
Rated Operational Currents and Wire Sizing
The main circuit screw terminals accept solid or stranded conductors: 2x (0.5... 1.5 mm²), 2x (0.75... 2.5 mm²), or max 2x (0.75... 4 mm²) — which covers the typical control wiring range for a size S00 contactor and avoids the need for ferrule adapters on stranded runs. Auxiliary and control circuit terminals use the same screw-type design, with identical wire ranges, so the same crimp tool and strip length work across all connections. Pollution degree 3: the contactor is rated for industrial environments where conductive dust or condensation may occur.
Coordination and Protection
For type 2 coordination (no damage to the contactor after a short circuit) the required upstream fuse is gL/gG 20 A; for type 1 coordination (contactor may need replacement) it is gL/gG 35 A. This lets the panel designer choose between protection level and fuse economy.