What this MCCB carries — and what it means on the line
The Siemens SENTRON 3VA2225-6HN32-0CL0 is a 3-pole molded case circuit breaker rated for 250 A continuous at 40 °C, with a maximum interrupting capacity of 242 kA at 240 V. That interrupting rating drops to 187 kA at 415 V and 121 kA at 500 V, so the available fault current at the panelboard determines which voltage column governs your specification. The breaker holds its full 250 A rating through 50 °C; above that it derates linearly to 213 A at 70 °C — a curve worth checking if the breaker sits near other heat sources in a closed enclosure. This is a line-protection design (not a motor-protection breaker), so it's sized for feeder or main service entrance duty. The built-in undervoltage release (UVR) and the auxiliary switch complement — 2 auxiliary switches, 1 trip alarm, 1 electrical alarm — mean it can report its state back to a PLC or annunciator without an add-on module.
Panel fit and footprint
The case measures 105 mm wide by 181 mm tall by 86 mm deep — a standard SENTRON 3VA2 frame size that fits the same mounting footprint as other 250 A MCCBs in the family. That 86 mm depth (3.39 in) is the dimension that matters when the gland plate or enclosure door clearance is tight. The breaker ships with the basic switch 3VA2225-6HN32-0AA0 as the supplied switching element; the order code suffix -0CL0 adds the specific UVR and auxiliary contact configuration.