SIRIUS 3RV6311-1EC10 — Motor Circuit Protector for Starter Combinations
Clearance needs: 50 mm above and below for airflow and wiring access, 30 mm at the sides.
The magnetic instantaneous trip at 52 A provides Type 2 coordination with downstream contactors, meaning the contactor won't weld under a short circuit up to the breaker's breaking capacity. Insulation voltage rated 690 V with pollution degree 3, surge withstand 6 kV — suitable for 400 V and 690 V line supplies.
Screw-type terminals on top and bottom accept 2 x (0.75 to 2.5 mm²) solid/stranded or 2 x 4 mm², with AWG equivalents 2 x (18 to 12). Finely stranded with ferrules: 2 x (0.5 to 1.5 mm²) or 2 x (0.75 to 2.5 mm²). Torque range 0.8 to 1.2 N·m — no special tooling needed beyond a standard screwdriver.