Siemens 3RT2046-1AF04 — SIRIUS Power Contactor, Size S3
It mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 60715, and the mounting position allows +/-180° rotation on a vertical surface plus +/-22.5° tilt forward/backward — useful when fitting into tight enclosures or existing busbar layouts. The headline rating is 96 A at 480 V in AC-3 duty, which is the standard motor-switching category per IEC 60947-4-1 — meaning it handles starting and running currents of induction motors up to that full-load current.
The 3RT2046-1AF04 carries a 96 A AC-3 rating at 480 V, which positions it for 3-phase motor loads in the 50–75 hp range depending on voltage and duty cycle. The AC-3 switching frequency is rated at 850 operations per hour maximum, with AC-4 (plugging/reversing) limited to 250 ops/h — a real constraint if the application involves frequent inching or reversing. The contactor accepts solid conductors from 2.5 to 16 mm² and stranded from 6 to 70 mm² on the main circuit, with auxiliary contact wiring accepting 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²). The coil terminals are screw-type, so expect a screwdriver for termination — no spring-cage on the coil side.
The contactor measures 70 mm wide, 140 mm high, and 195 mm deep — the S3 frame size. These clearances matter for heat dissipation and arc flash containment; the arcing time is specified at 10 to 20 ms at 50 Hz. The auxiliary switch is included (yes), so no separate add-on module is needed for basic status feedback.