Siemens SENTRON 3VA2110-6HN36-0AC0 — 100 A MCCB with 242 kA breaking capacity
The Siemens SENTRON 3VA2110-6HN36-0AC0 is a 3-pole 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 up to that ceiling. Its 242 kA breaking capacity at 240 V AC means it can safely interrupt fault currents up to 242 kiloamps at that voltage, which is essential for high-fault installations like transformer secondaries or large bus risers. At 415 V and 440 V the interrupting rating holds at 187 kA; at 500 V it's 121 kA, and at 690 V it drops to 3.7 kA. This breaker is designed for line protection (feeder duty) and carries no undervoltage release, no ground-fault monitoring, and no communication function — it's a straight thermal-magnetic or electronic trip unit in a compact 105 mm wide, 181 mm tall, 86 mm deep package.
Panel fit and integration
At 86 mm deep, 105 mm wide, and 181 mm tall, the 3VA2110-6HN36-0AC0 fits standard MCCB panel cutouts and DIN-rail or screw-mount backplates. The 3-pole form factor matches typical feeder breaker slots in distribution boards. Power dissipation is 10 W maximum at rated load — negligible for most enclosures but worth checking if the panel is densely packed with multiple breakers.
Built-in auxiliary switches
The breaker ships with 2 auxiliary switches (HQ type) pre-installed — no separate add-on required for status feedback to a PLC or alarm panel. The supplied basic switch is order code 3VA21106HN360AA0.