The 100 kA breaking capacity holds across the full voltage range: 240 V, 400 V, 500 V, and 690 V AC. That's a Type 2 coordination rating — it means downstream contactors and overloads survive a short-circuit event without damage, assuming the right combination. The main contacts are rated for 100,000 mechanical operations typical, so it's built for production-line cycling, not just backup protection.
Main current circuit uses spring-loaded terminals — no screw tightening, just push the ferrule in. The screwdriver shaft for the auxiliary terminal needs a 3 mm diameter tip, 3.0 x 0.5 mm size. No ground-fault or phase-failure detection built in — that's handled by the upstream or downstream protection.