What this MCCB brings to a 100 A feeder
The Siemens SENTRON 3VA2010-6HN32-0DL0 is a 3-pole molded case circuit breaker rated for 100 A continuous current across the full 40–70 °C ambient range — no derating needed up to 70 °C, which simplifies panel layout in warm enclosures. Its interrupting capacity hits 242 kA at 240 V AC and 187 kA at 415 V, giving solid headroom for high-fault service-entrance or distribution panels where upstream transformer capacity is large. The breaker is fitted with an undervoltage release (UVR) and a full auxiliary switch block — 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch — so it reports trip and status back to a PLC or annunciator without extra wiring.
Dimensions are 105 mm wide, 181 mm high, and 86 mm deep — a standard SENTRON 3VA frame size that drops into existing DIN-rail or screw-mount panel layouts without rework. Maximum power loss is 16 W, so heat dissipation is manageable in a typical IP54 steel enclosure with natural convection.