What the 110 kA rating means for your panel
The Siemens 3VA2025-7HL36-0AC0 is a 3-pole IEC frame 100 circuit breaker with a 110 kA breaking capacity at 415 V — that is class C interrupting rating. For a main or feeder breaker on a high-fault industrial service, that SCCR headroom lets you avoid cascading an upstream trip or adding current-limiting fuses. The ETU320 LI trip unit gives you adjustable overload protection (Ir) from 10 to 25 A and short-circuit pickup (Ii) from 1.5 to 12 times the In of 25 A.
Panel and wiring integration
Clamp connection terminals — no lugs or compression tools needed, just strip and torque. The 3VA2 frame 100 footprint is standard for Siemens IEC panels; it clips onto the DIN rail or mounts with screws on a mounting plate. Two HQ auxiliary switches are built in, so you get status feedback without adding a separate accessory block.