SENTRON 3VA2 MCCB — 250 A, ETU550, Current Production
The 3VA2225-5JP32-0CH0: Breaking capacity runs 187 kA at 240 V, 121 kA at 415/440 V, 79 kA at 500 V, and 5.1 kA at 690 V — figures that cover most North American and European LV fault-current scenarios without needing a current-limiting upstream device. The 800 V rated insulation voltage (Ui) confirms suitability for 480/600 VAC systems with margin.
Integration — Panel Fit and Auxiliary Options
The 3-pole frame measures 105 mm wide × 181 mm high × 86 mm deep — a standard footprint that fits Siemens 3VA2 panelboards and most DIN-rail or bolt-on mounting arrangements. The breaker ships with an integrated undervoltage release (UVR) and auxiliary contact configuration: 2 auxiliary switches plus 1 trip alarm switch (HQ type). The supplied basic switch is order code 3VA2225-5JP32-0AA0; the integrated auxiliary trip is 3VA9608-0BB24 — both are Siemens factory-matched components, not field retrofits. Maximum power dissipation is 50.5 W — relevant for enclosure thermal calculations when grouping multiple breakers in a sealed panel. Ambient operating range is -25 °C to +70 °C, storage -40 °C to +80 °C. The ETU550 electronic trip unit draws its power from the line-side current; no external control power is needed for the trip functions.