Breaking capacity and trip unit
The 3VA2025-5HL36-0AB0 is a 3-pole IEC frame 100 MCCB from the Siemens 3VA2 series, rated for a 55 kA breaking capacity at 415 V AC — class M interrupting rating. That means it clears bolted faults up to 55 kA without external fuses, which is the spec that governs selectivity coordination in a distribution board. The ETU320 electronic trip unit is configured for LI protection (long-time and instantaneous), with overload pickup Ir adjustable from 10 A to 25 A and instantaneous pickup Ii settable from 1.5 to 12 times In. The 25 A fixed rating (In) sets the thermal-magnetic backbone; the Ir dial lets you match cable or load current without swapping the breaker body.
Auxiliary switching and connections
Termination is clamp (screw-less cage) type, sized for the frame 100 lug range. The 3VA2 family uses a common DIN-rail mount adapter; panel builders will find the footprint identical to other 3VA2 frame 100 breakers, so cutouts and busbar positions carry over.