What this 3VA2225-7HL32-0KC0 is and what it does
The ETU320 electronic trip unit provides adjustable overload and short-circuit protection curves, making this breaker suitable for selective coordination in a distribution panel — you can set the pickup and delay to ride through downstream faults and clear only on a sustained overcurrent.
Breaking capacity — what the numbers mean for your panel
This 3-pole MCCB delivers 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 6.3 kA at 690 V. The 330 kA figure at 240 V is the highest in the 3VA2 frame class — it safely interrupts a fault up to that level without the arc flashing over, which is critical for high-fault-capacity service entrances or transformer secondaries. At 690 V the rating drops to 6.3 kA, so verify the available fault current if this breaker lands on a 690 V bus.
Auxiliary and shunt trip integration
The breaker ships with 2 auxiliary switches HQ (high-rupturing-capacity type) and a shunt trip (STL) release built in — the shunt trip is factory-fitted as a 3VA9688-0BL33 module. That means you can remote-trip the breaker from a PLC, E-stop circuit, or fire-alarm relay without adding an external undervoltage release. No communication function or phase-failure detection is included, so if you need remote monitoring, plan for a separate power-metering block.
Thermal derating and power loss
Rated 250 A continuously up to 50 °C ambient. Above that, derate linearly: 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, 213 A at 70 °C. Maximum power loss is 48 W — that is the heat the breaker dumps into the enclosure at full rated current, so factor it into your panel thermal calculation if you are stacking several breakers in a sealed cabinet.