SENTRON 3VA2225-8HL32-0KL0 — 250 A MCCB for Line Protection
The Siemens SENTRON 3VA2225-8HL32-0KL0 is a 3-pole molded case circuit breaker (MCCB) rated for 250 A continuous current, designed specifically for line protection — meaning it's the primary overcurrent device guarding a feeder or main distribution bus, not a motor-protective or ground-fault version. It carries a breaking capacity of 440 kA at 240 V and 330 kA at 415 V, which puts it in the high-interrupting class for industrial switchgear where fault currents can reach extreme levels. The thermal derating curve is published: it holds the full 250 A up to 50 °C ambient, then drops to 241 A at 55 °C and 213 A at 70 °C — so if you're mounting this in a hot enclosure, plan for the reduced ampacity above 50 °C.
Breaking Capacity and Selectivity Headroom
At 690 V the breaker still interrupts 52.5 kA, so it can serve as the main breaker in a 690 V distribution panel feeding step-down transformers or VFD groups. The 2 500 A maximum setting range (with a 375 A minimum) on the electronic trip unit gives wide selectivity coordination with downstream feeders — you can dial the long-time pickup well above the 250 A frame rating to ride through motor starting inrush without nuisance tripping.
Auxiliary and Release Configuration
This variant ships with a shunt trip release (STL) for remote tripping and a full auxiliary switch complement: 2 auxiliary switches + 1 trip alarm switch + 1 electrical alarm switch HQ. That covers remote status indication and emergency shutdown integration without adding external relays. No undervoltage release, no ground-fault monitoring, no communication module — it's a straightforward line-protection MCCB with hardwired signals.
Physical Fit and Panel Integration
Dimensions are 105 mm wide × 181 mm high × 86 mm deep. That 86 mm depth is the overall body — it fits standard MCCB mounting footprints in 600 mm deep enclosures with room for rear-access wiring. The 3-pole format matches common busbar layouts. Maximum power loss is 48 W at rated current, so factor that into enclosure ventilation if you're grouping several breakers in a sealed cabinet.
Environmental and Compliance
Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The trip indicator and voltage trigger are present, giving visual and electrical status for troubleshooting. As a SENTRON series MCCB, it carries Siemens' standard compliance documentation (IEC 60947-2, UL 489) — the specific certs for this order code should be verified against the factory certificate for your jurisdiction.