The Siemens SENTRON 3VA2225-6KP32-0DA0 is a 3-pole molded case circuit breaker (MCCB) rated for 250 A continuous current, designed for line protection in distribution panels. It carries a breaking capacity of 242 kA at 240 V, stepping down to 187 kA at 415 V and 440 V, 121 kA at 500 V, and 4.5 kA at 690 V — the high interrupt rating at lower voltages makes it a strong choice for fault-current-heavy service entrances or transformer secondaries where SCCR headroom is needed.
Ratings and what they mean for fit
The 250 A continuous rating holds flat from 40 °C through 50 °C, then derates to 238 A at 55 °C, 225 A at 60 °C, 213 A at 65 °C, and 200 A at 70 °C. That means in a warm panel — say 55 °C ambient — you lose 12 A of headroom; plan the load accordingly if the breaker sits near other heat sources. Maximum power loss is 50.5 W. That's the heat the breaker dumps into the enclosure at full rated current — factor it into your panel thermal budget, especially in a sealed NEMA 12 cabinet. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The storage limit governs handling and warehousing, not running conditions.
Integration and wiring
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — a standard 3-pole MCCB footprint that fits most Siemens SENTRON panelboards and third-party enclosures with DIN-rail or bolt-on mounting. Verify the bus-bar pitch matches your existing distribution block before committing the BOM line. This variant includes an undervoltage release (UVR) and a communication function plus an other measurement function — it can report status and trip events back to a controller, which saves running separate sense wires for remote monitoring. No auxiliary switch is fitted from the factory (design of the auxiliary switch: without), so if you need a separate NO/NC contact for a PLC input, order the auxiliary switch module separately. The supplied basic switch is order code 3VA2225-6KP32-0AA0 — that's the core breaker mechanism; the -0DA0 suffix adds the UVR and communication stack. No ground-fault monitoring is built in (ground-fault monitoring version: without); add an external GF module if the application requires it.