What this MCCB carries and what it means for your panel
The Siemens 3VA2225-5HL42-0JC0 is a SENTRON molded case circuit breaker (MCCB) rated for 250 A continuous current (Iu) across a 4-pole configuration. The ETU320 electronic trip unit gives you adjustable overload and short-circuit protection curves — line protection version, so it's set up for feeder and distribution duty, not motor starting. Breaking capacity hits 187 kA at 240 V and 121 kA at 415 V, which means it can interrupt high-fault-current faults without upstream coordination headaches in most industrial distribution panels.
Thermal derating — the real continuous current in a warm cabinet
Rated 250 A at 40 °C, 45 °C, and 50 °C. At 55 °C it derates to 241 A, at 60 °C to 232 A, at 65 °C to 222 A, and at 70 °C to 213 A. If your panel ambient runs above 50 °C — common in a packed enclosure or near a dryer section — plan on that 213 A ceiling at 70 °C. The maximum operating temperature is 70 °C; storage range is -40 °C to 80 °C.
Built-in auxiliary and shunt trip — what comes inside
Factory-fitted with 2 auxiliary switches (HQ type) and a shunt trip (STL) release. The shunt trip allows remote tripping via a control voltage — useful for emergency-stop circuits or interlocking. The basic switch assembly is order code 3VA2225-5HL42-0AA0; the integrated auxiliary trip module is 3VA9688-0BL32. No undervoltage release, no ground-fault monitoring, no communication module on this variant.
Physical fit — DIN-rail or panel-mount dimensions
Width 140 mm, height 181 mm, depth 86 mm. That 140 mm width is the standard 4-pole MCCB footprint for this SENTRON frame size.