What this 3VA1110-5EF32-0HC0 brings to a panel
The Siemens 3VA1110-5EF32-0HC0 is a SENTRON molded case circuit breaker (MCCB) rated 100 A at 40 °C, 3-pole, with a breaking capacity of 187 kA at 240 V AC — enough to handle high-fault utility feeds or transformer secondaries without cascading upstream gear.
The short-circuit rating drops as line voltage rises: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V.
Thermal derating — don't lose headroom at elevated panel temps
Rated 100 A from 40 °C through 50 °C, then derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C.
Footprint is 76.2 mm wide (3 in), 130 mm tall (5.12 in), 70 mm deep (2.76 in) — standard 3-pole MCCB envelope for a 100 A frame.