Motor protection circuit breaker — SIRIUS 3RV2032-4KA15
This is a critical feature for unattended or remote installations where a lost phase might not be noticed until the motor burns out.
At 690 V it still interrupts 4 kA, covering 690 V motor circuits common in mining and heavy process plants.
Panel integration
Screw-type terminals on the main current circuit accept 2×(0.5…1.5 mm²) or 2×(0.75…2.5 mm²) solid or stranded conductors. The M6 main contact screws provide a solid connection for motor branch wiring up to the rated current. Clearance distances: 50 mm above and below, 10 mm to the side. These are the minimum air gaps to maintain the rated breaking capacity and arc-quenching performance — panel builders should respect them in the layout.