Siemens SENTRON 3VA2325-5HL32-0KA0 — 250 A MCCB with Shunt Trip
The Siemens SENTRON 3VA2325-5HL32-0KA0 is a 3-pole molded case circuit breaker rated for 250 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. The integrated shunt trip release (STL) allows remote tripping, so this breaker fits into emergency-stop or load-shedding circuits where a separate undervoltage release is not specified.
At 240 V the 3VA2325-5HL32-0KA0 delivers 187 kA breaking capacity; at 415 V and 440 V it holds 121 kA, then drops to 75.6 kA at 500 V and 7.5 kA at 690 V. The minimum breaking capacity is 375 A — below that threshold the internal arc may not extinguish reliably, so the breaker should not be applied on circuits where prospective fault current falls under that floor.
Maximum power loss is 37.5 W — within tolerance for a ventilated enclosure; for sealed cabinets, check the internal temperature rise against the 70 °C operating maximum.
