The Siemens 3VA2225-6JP32-0CL0 is a SENTRON molded case circuit breaker rated for 250 A continuous current (Iu) with an ETU550 electronic trip unit. The 3-pole line-protection variant is sized for feeder or main breaker duty in distribution panels.
Breaking capacity drops as system voltage rises: 242 kA at 240 V, 187 kA at both 415 V and 440 V, 121 kA at 500 V, and 6 kA at 690 V. The 187 kA figure at 415 V is the one most European industrial panels will coordinate against — it tells you this breaker holds its own on the secondary side of a 500 kVA transformer without needing a current-limiting upstream device.
Rated 250 A from 40 °C through 50 °C ambient. Above that, derating is linear: 238 A at 55 °C, 225 A at 60 °C, 213 A at 65 °C, and 200 A at 70 °C. If this breaker lives in a non-air-conditioned enclosure near ovens or drives, the 55 °C derated figure (238 A) is the one to size the downstream load against — not the 250 A nameplate.
Trip unit and auxiliary configuration
This order code ships with an undervoltage release (UVR) fitted, plus a full auxiliary contact block: 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch (HQ type).
Dimensions are 181 mm high, 105 mm wide, 86 mm deep — a standard 3-pole MCCB footprint that fits SENTRON 3VA mounting bases and busbar systems.