SENTRON 3VA2225-6JQ32-0JA0 — 250 A MCCB with shunt trip, line protection
The Siemens SENTRON 3VA2225-6JQ32-0JA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a full-scale current of 250 A and a minimum setting of 375 A — the trip unit adjusts down to 50 A initial value, so it covers feeder and subfeeder duty in a 400 V class panel. Breaking capacity reaches 242 kA at 240 V and 187 kA at 415 V, dropping to 121 kA at 500 V and 4.5 kA at 690 V; the 690 V figure is the weak leg — verify the available fault current at that voltage before specifying. Thermal derating is flat at 250 A from 40 °C through 50 °C, then steps down to 238 A at 55 °C and 200 A at 70 °C, which governs the actual continuous current in a warm enclosure.
Breaking capacity across voltages — where it fits
At 240 V the 242 kA interrupting rating handles high-fault utility feeds; at 415 V the 187 kA still covers most industrial transformer secondaries. The 121 kA at 500 V suits 480 V distribution in North American plants. The shunt trip (STL) auxiliary release allows remote tripping, which is useful for emergency-off circuits or undervoltage coordination.
No successor or phase-out date is on record. For BOM freeze or PCN watch, this part is in active supply.
The breaker measures 86 mm deep, 105 mm wide, and 181 mm high (3.39 × 4.13 × 7.13 in).
Maximum power loss is 48 W. The basic switch variant is 3VA2225-6JQ32-0AA0.