What this MCCB carries — and what it means for your panel
The Siemens 3VA2225-5HL32-0BA0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) rated for 250 A continuous current with an ETU320 electronic trip unit. The 187 kA interrupting capacity at 240 V drops to 121 kA at 415/440 V, then to 79 kA at 500 V, and 5.1 kA at 690 V — so the voltage class of your distribution determines which fault level this breaker can clear. At 690 V it's a 5.1 kA device, which means it's suited for low-fault 690 V sub-distribution, not main service entrance at that voltage. The ETU320 is a line-protection (non-selectivity) release — no ground-fault or communication module on this variant. It's the straightforward overcurrent-only trip unit for feeder protection where you don't need zone-selective interlocking or energy-reducing maintenance switching. Thermal derating is published: 250 A through 50 °C, then 241 A at 55 °C, stepping down to 213 A at 70 °C. If this breaker lives in a hot enclosure or near other heat sources, that derating curve is your real ampacity limit — not the nameplate 250 A.
Dimensions and panel fit
Footprint: 105 mm wide × 181 mm tall × 86 mm deep. That 86 mm depth includes the case body — no protruding handle or arc-chamber extension beyond it, so it fits standard 200 mm deep enclosures with room for rear busbars. Three-pole construction, no auxiliary contact block fitted on this order code. If you need status feedback to a PLC or indication lamp, you'll add the separate auxiliary switch (order code 3VA9608-0BB11 is the integrated auxiliary trip listed on the same datasheet).
Integrated undervoltage release — what it means for your safety circuit
This variant ships with an undervoltage release (UVR) built in — design code 5HL32 signals that. The UVR trips the breaker when control voltage drops below a threshold, which is standard for emergency-stop chains or undervoltage protection schemes. No separate shunt trip or UVR module to wire in; it's factory-integrated. Mechanical endurance is rated at 20,000 operations — adequate for a distribution breaker that cycles a few times a year, not a daily-switched load.