What it is and what it does
The Siemens SENTRON 3VA2110-5HN36-0AF0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current at 40 °C, with a rated insulation voltage of 800 V. It is designed for line protection — protecting cables and distribution panels from overloads and short circuits. The breaking capacity is 187 kA at 240 V AC, 121 kA at 415/440 V, and still 75.6 kA at 500 V — numbers that put it in the high-interrupting class for industrial switchgear.
Key ratings: what they mean for your panel
The 100 A rating holds flat from 40 °C through 70 °C — no derating needed in a warm enclosure, which is a practical advantage if the breaker sits near transformers or other heat sources. The 187 kA at 240 V means it can safely interrupt very high fault currents typical of large transformer secondaries or utility feeds; at 415 V the 121 kA still covers most industrial service entrances. The 690 V rating drops to 3.7 kA — still enough for motor branch circuits but not for main feeders at that voltage.
Integration and mounting
Dimensions are 105 mm wide, 181 mm high, and 86 mm deep — a standard MCCB footprint for panel mounting on a DIN rail or direct screw-fix. The unit includes one auxiliary switch and one trip alarm switch (HQ design) for remote status indication. No undervoltage release, no ground-fault monitoring, no communication module — it is a straight thermal-magnetic line-protection breaker.