250 A MCCB with high interrupting capacity for line protection
The Siemens SENTRON 3VA2225-6JP32-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated for 250 A continuous current across the 40 °C to 50 °C ambient range, meaning it holds its full rating without derating in most standard panel environments. Above 50 °C it derates linearly to 200 A at 70 °C — a curve to check if the breaker sits near a heat source or in a high-ambient enclosure. Its interrupting capacity hits 242 kA at 240 V and 187 kA at 415 V and 440 V, which places it in the high-fault tier for industrial switchboards and data-center distribution. At 690 V the rating drops to 4.5 kA — still adequate for most 690 V motor circuits but not for high-fault buswork at that voltage. The breaker includes an undervoltage release (UVR) as the auxiliary release, so it can be wired into an emergency-stop chain or a voltage-monitoring circuit that trips the breaker when supply drops below a threshold. No auxiliary switch is fitted on this variant — if you need a status contact for the panel PLC, that is a separate add-on.
Sourcing and lifecycle — active production, quoted to order
The part carries a maximum power loss of 50.5 W — a factor for thermal calculations inside a sealed enclosure, especially if multiple breakers are ganged in a row without ventilation gaps.
Panel fit and integration
Dimensions are 86 mm deep, 105 mm wide, and 181 mm high — a standard SENTRON 3VA2 frame footprint that fits the existing cutout and busbar spacing for this series. The 3-pole block occupies three module widths on a DIN rail or bolted busbar assembly. Rated for line protection (not motor protection — no thermal-magnetic curve for overload), this MCCB is designed for feeder and distribution circuits where the trip curve coordinates with downstream breakers. The communication function is present, so it can integrate with a higher-level monitoring system if the optional communication module is added.