The Siemens SENTRON 3VA2325-5HN32-0BA0 is a 3-pole molded case circuit breaker (MCCB) rated for 250 A continuous current, designed for line protection in distribution panels and motor control centers. It carries a full-rated 250 A from 40 °C through 70 °C ambient — no derating needed across that span, which simplifies panel layout when the breaker sits near other heat sources.
Breaking capacity by voltage level
The interrupting rating is voltage-dependent: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V. At the common 415 V distribution level, 121 kA gives substantial headroom for high-fault installations — useful when the MCCB is the first device after a transformer or in a paralleled-generator setup.
Integrated undervoltage release
This variant ships with an undervoltage release (UVR) as the auxiliary release — it trips the breaker when supply voltage drops below a set threshold, which is standard for safety circuits that need to drop a load on brownout or emergency stop. No auxiliary switch is fitted, so if you need a separate status contact for the PLC, plan for an external auxiliary block.
Physical fit and panel integration
Dimensions are 248 mm high, 138 mm wide, 110 mm deep — a standard MCCB footprint that fits most DIN-rail or panel-mount enclosures. The 110 mm depth is the projection from the mounting surface, which matters when the panel door clearance is tight. Power loss at full load is 40 W; account for that in enclosure thermal calculations if the breaker is in a sealed box with other heat-generating devices.