The 3VA2325-5HM32-0BK0 is a Siemens 3VA2 IEC frame 400 molded case circuit breaker with a breaking capacity class M rating of Icu=55kA at 415V AC. The 3-pole construction suits three-phase line protection. The ETU330 electronic trip unit provides LIG protection: Long-time (overload) adjustable Ir=100A to 250A, Instantaneous (short-circuit) adjustable Ii=1.5 to 12 times In, and Ground-fault protection with adjustable Ig=0.2 to 1 times In and time delay tg=0.1 or 0.3 seconds. This selectivity suite lets you coordinate downstream breakers and minimize nuisance trips on transient faults.
Accessories and deployment context
The UVR ensures the breaker trips on loss of control voltage — a standard safety interlock for emergency-stop circuits or undervoltage protection on motor feeders. The auxiliary and alarm contacts feed status back to a PLC or SCADA for remote indication. Mounts in standard IEC panelboard or switchgear cubicle; the frame 400 footprint is common across the 3VA2 family, so retrofitting an existing installation with this unit typically requires no busbar rework.