What the ratings mean for fit
The 3VA2325-5HL32-0BL0 is a SENTRON molded case circuit breaker rated for 250 A continuous current across the full ambient range of 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel thermal calculations for a 250 A feeder or main in a switchboard. The interrupting ratings climb to 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 7.5 kA at 690 V. That 187 kA figure at 240 V means it can clear a bolted fault on a high-capacity 240 V transformer secondary without upstream fuses — a critical selectivity point for a main breaker in an industrial distribution panel. Designed for line protection (cable/feeder/busbar protection), not motor protection — no thermal overload curve tuned for motor starts. The 3-pole construction with an undervoltage release (UVR) built in means it drops out on loss of control voltage, standard for safety circuits on conveyors or process skids where a voltage dip should isolate the load. Dimensions: 248 mm high, 138 mm wide, 110 mm deep. That 138 mm width is a standard 3-pole MCCB footprint for this class — fits existing SENTRON mounting rails and busbar connections without panel rework if replacing an earlier 3VA2 frame.
Auxiliary switch configuration
Factory-fitted with 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch (HQ type). That gives four discrete signal outputs for status feedback — open/closed, tripped, and electrical alarm — enough to wire into a PLC DI card or a motor control center indication lamp without adding an external interface relay. The undervoltage release (UVR) is a separate auxiliary release, not integrated into the trip unit. It operates independently of the electronic trip — meaning a control-voltage loss opens the breaker even if the trip unit is healthy. Standard for emergency-stop circuits that need to drop the main on control power loss.