Transformer-protection circuit breaker, SIRIUS 3RV2411-0AA10
Rated breaking capacity hits 100 kA at 400 V AC and holds that figure at 240 V, 500 V, and 690 V AC. That's a high-interrupting rating for a size S00 frame — it clears a bolted fault upstream of the transformer without cascading to the main breaker. No ground-fault detection on this variant — that's a separate add-on module when needed.
Screw-type terminals on the main circuit accept 2x 0.75–2.5 mm² solid/stranded or 2x 4 mm². That's typical for S00 breakers — leaves room for cable bending and heat dissipation.
