What this MCCB delivers — 250 A continuous, 330 kA interrupting at 240 V
The Siemens 3VA2225-7KP32-0JL0 is a SENTRON molded case circuit breaker (MCCB) rated for 250 A continuous current (Iu) and a rated insulation voltage of 800 V. It carries a 3-pole line protection configuration with an ETU850 electronic overcurrent release, giving you adjustable trip curves and communication capability for selective coordination studies. Breaking capacity is 330 kA at 240 V, dropping to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 6.3 kA at 690 V — numbers that place this breaker in the high-interrupting category for large service entrances or heavy industrial feeders. The 250 A frame holds that rating through 50 °C ambient; above that it derates linearly to 200 A at 70 °C. Dimensions are 86 mm deep, 105 mm wide, 181 mm tall — a standard 3-pole MCCB footprint that fits most Siemens SENTRON panelboards and switchboards without adapter plates. Operating temperature range is -25 °C to 70 °C, with storage from -40 °C to 80 °C.
Auxiliary contacts and trip options built in
The breaker ships with a shunt trip (STL) release (order code 3VA9688-0BL32) and an auxiliary contact block that includes 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch HQ — enough for remote status feedback and emergency trip without adding external relays. A voltage trigger is present; undervoltage release is not. Maximum power loss is 48 W at full rated current — figure that into your enclosure thermal budget if the panel is tightly packed. The breaker also has a mechanical trip indicator and latching endurance rated at 20,000 operations.
Integration notes for the panel builder
Mounts on a standard DIN rail or bolts directly into SENTRON panelboard busbars. The 105 mm width matches the standard 3-pole MCCB slot in most switchgear lineups. The ETU850 release is field-configurable via the front face — no need to pull the breaker for trip-curve changes.