The Siemens SENTRON 3VA2225-6HL32-0HH0 is a 3-pole molded case circuit breaker (MCCB) rated for 250 A continuous current at 40 °C, designed for line protection in distribution panels. Its 242 kA breaking capacity at 240 V AC gives it the headroom to interrupt high-fault currents without cascading upstream — a spec that matters when you're coordinating selectivity in a main or feeder breaker position.
Breaking Capacity and Derating
Breaking capacity drops with system voltage: 187 kA at 415 V and 440 V, 121 kA at 500 V, and 4.5 kA at 690 V. That 690 V figure is the weak point — if your line side runs 690 V, this breaker is not your first choice for high-fault locations. Thermal derating is published per 5 °C steps above 50 °C: 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, 213 A at 70 °C. The breaker holds full 250 A up to 50 °C ambient, which covers most indoor panel environments.
Auxiliaries and Releases
This variant ships with a shunt trip release (STL) and a 2-auxiliary-switch + 1 trip alarm switch HQ configuration. The shunt trip allows remote tripping via a control signal — useful for emergency-stop circuits or supervisory shutdown. No undervoltage release, no ground-fault monitoring module, no communication function. If you need those, you're looking at a different suffix.
Physical Fit and Environment
Dimensions: 105 mm wide, 181 mm high, 86 mm deep. That 105 mm width is the standard 3-pole MCCB footprint for this current class — it fits existing SENTRON mounting bases and busbar systems without adapter plates. Operating temperature range -25 °C to 70 °C; storage from -40 °C to 80 °C. Maximum power loss 48 W at rated current — factor that into enclosure ventilation if you're packing multiple breakers in a small cabinet.