What this MCCB carries
The Siemens SENTRON 3VA2225-6HL32-0JA0 is a 3-pole molded case circuit breaker rated for 250 A continuous current (Iu) with an ETU320 electronic trip unit. It's configured for line protection — no ground-fault monitoring, no communication module, no auxiliary contacts onboard. What it does carry is a shunt trip release (STL) for remote opening, plus a voltage trigger function. Interrupting capacity is the headline here: 242 kA at 240 V, 187 kA at both 415 V and 440 V, 121 kA at 500 V, and still 6 kA at 690 V. That's a serious SCCR curve — it tells you this breaker is sized for high-fault industrial switchgear, not light commercial panels. The 250 A frame stays fully rated across the 40 °C to 50 °C ambient band; derating starts at 55 °C (241 A) and drops to 213 A by 70 °C.
Trip unit and release configuration
The overcurrent release is an ETU320 — an electronic trip unit that gives you adjustable thermal and magnetic settings, plus a rated insulation voltage of 800 V. The shunt trip (STL) is integrated, not an add-on module, and its part number is 3VA9688-0BL32. No undervoltage release, no phase-failure detection, no ground-fault module on this variant. The base switch itself is order code 3VA2225-6HL32-0AA0. Maximum power loss is 48 W. Mechanical endurance is 20,000 operations.
Physical fit and environment
Dimensions: 181 mm high, 105 mm wide, 86 mm deep. Three-pole footprint, so it occupies a standard MCCB slot in a SENTRON distribution panel or any DIN-rail-mounting enclosure rated for the frame size. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.
Lifecycle and sourcing
Lifecycle status is current — this is an active, in-production Siemens SENTRON catalog number. It is sourced to order through independent distribution; availability and pricing are confirmed at quote time.