Siemens SIRIUS 3RT1016-1BF45-ZX95 Power Contactor, Size S00,

The 110 VDC coil pulls 3.3 W on close and hold, so the power supply doesn't need a big inrush buffer. At 400 V AC-3 duty it's rated for 4 kW motor load; at 690 V it handles 5.5 kW. AC-4 at 400 V gives 8.5 A for reversing or inching service, where the contacts take a harder hit. The three main poles are rated for 10 A at AC-12 (resistive), 6 A at 230 V, and 3 A at 400 V. For DC switching, the coil-side auxiliary contacts handle 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, and 0.3 A at 220 V. That's enough for most pilot-duty circuits, but watch the DC voltage curve if you're switching a solenoid valve bank. Screw-type terminals accept two conductors per clamp: 0.5 to 1.5 mm² solid, 0.75 to 2.5 mm² stranded, or a single 4 mm². AWG equivalents are 2x 20-16, 2x 18-14, or 1x 12. That covers most panel wiring without needing ferrules, though stranded always benefits from them. IP20 on the front and terminals keeps fingers out but doesn't stop water — mount it inside a cabinet, not out in the washdown.