The Siemens 3RT2516-1AH00 is a SIRIUS contactor in the Size S00 frame — the smallest footprint in the SIRIUS contactor family, at 45 mm wide, 57.5 mm tall, and 73 mm deep. The coil termination uses screw-type terminals, and the main poles and auxiliary switch are wired via the same terminal type. Rated switching current is 10 A at 24 V rated value (AC or DC) and 10 A at 230 V rated value, with lower ratings at intermediate voltages — 2 A at 48 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, 3 A at 400 V, 0.8 A at 440 V, and 0.1 A at 600 V. The AC-1 maximum operating frequency is 1 000 switching cycles per hour; DC switching frequency is 10 000 cycles per hour. Side-by-side mounting is permitted with 6 mm spacing at the side; zero clearance required upwards, downwards, forwards, and backwards.
Solid or stranded conductors: accepts 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm² per clamp. The coil is screw-type terminals — no spring-cage option on this variant.