S10 vacuum contactor for heavy motor switching
The 3RT1266-6AS36: Rated switching frequency reaches 750 operations per hour in AC-3 and AC-3e duty, dropping to 250 ops/h in AC-2 and AC-4 — the derating reflects the longer arcing time in high-inertia or plug-reverse applications.
Panel fit and cable termination
Stranded power cable range is 70–240 mm² — that is a heavy cable, typically 2/0 to 500 kcmil, so the incoming lug or bus bar needs to match. The auxiliary wiring accepts 0.5–4 mm² solid or stranded, terminated at screw-type terminals.
Environmental limits and coil characteristics
The coil pick-up and drop-out times are 40–80 ms for both AC and DC supplies — the same window regardless of supply type, which simplifies timing coordination in a motor control centre. Coil rated voltage is 500–550 V AC, with a pick-up threshold of 0.8× rated and a drop-out of 0.9× rated at 50/60 Hz.