What this MCCB is and what it carries
The Siemens 3VA2110-5HN32-0DL0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed in a warm panel. Its 187 kA breaking capacity at 240 V handles high-fault utility feeds; at 415 V it still interrupts 121 kA, and at 690 V the rating drops to 3.7 kA, which tells you this breaker is sized for low-voltage distribution, not 690 V motor circuits. Three poles, line-protection design (no ground-fault module), and it ships with an undervoltage release plus a full auxiliary switch stack: two auxiliary switches, one trip alarm switch, and one electrical alarm switch HQ. That switch complement means you get status feedback for position, tripped, and alarm conditions without adding external relays.
Breaking capacity — what the numbers mean for your panel
The 187 kA at 240 V is the maximum short-circuit current this MCCB can safely interrupt at that voltage. At 415/440 V it still holds 121 kA, and at 500 V it's 75.6 kA. Those are high-interrupting ratings — typical for a main breaker in a large distribution board fed by a transformer of several hundred kVA. The sharp drop to 3.7 kA at 690 V confirms this is a 480 V class breaker, not a 690 V device.
Panel fit and dimensions
The 3VA2110-5HN32-0DL0 measures 105 mm wide, 181 mm high, and 86 mm deep. That 105 mm width is the standard 3-pole MCCB footprint for the SENTRON 3VA series — it clips onto a DIN rail or mounts via the rear screw terminals. The 86 mm depth leaves clearance for wiring and auxiliary wiring ducts in a standard 200 mm deep enclosure.