The Siemens 3RT2016-2KB42-ZX95 is a SIRIUS coupling contactor in Size S00, designed for switching DC loads in control panels. At 73 mm deep, 70 mm tall, and 45 mm wide, it fits the standard S00 footprint — a common size for compact auxiliary and coupling duties in motor control centers.
The DC switching ratings tell you what loads this contactor can break: 10 A at 24 V, 2 A at 48 V and 60 V, 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 3 A at 400 V. These are the current limits for DC-1 and DC-3 duty — use them to size the contactor for solenoid valves, DC brakes, or signal isolation. Switching frequency: up to 1,000 cycles/hour at AC-1, 750 at AC-2 and AC-3, and 250 at AC-4. Wire range: 0.5 to 4 mm² solid or stranded, 2x (0.5–4 mm²) per terminal. Spring-type terminals.
Clearances: 10 mm upwards, downwards, and forwards; 6 mm at the sides.