Its 250 A rating at 40 °C holds flat through 50 °C — no derating needed up to that point — then steps down to 240 A at 55 °C, 235 A at 60 °C, 230 A at 65 °C, and 225 A at 70 °C. Breaking capacity is the headline: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 40 kA at 690 V. These are high-interrupting ratings for a 250 A frame — it clears a bolted fault at the main distribution board without cascading upstream. The ETU350 electronic trip unit gives adjustable long-time, short-time, and instantaneous protection curves, plus ground-fault capability if the optional module is added. Physical fit: 138 mm wide, 248 mm tall, 110 mm deep — standard 3-pole MCCB footprint for a 250 A frame.
Integration notes
The breaker ships with three auxiliary switches (HQ type) integrated — no separate add-on required for status feedback. The basic switch variant is 3VA2325-6HN32-0AA0; the auxiliary trip unit (3VA9608-0BB24) is a separate order.