What this MCCB delivers for the panel
The Siemens SENTRON 3VA2110-5HN32-0HA0 is a 3-pole molded case circuit breaker (MCCB) rated at 100 A continuous current, designed for line protection in distribution panels. It carries a shunt trip (STL) auxiliary release, meaning it can be remotely tripped via a control signal — useful for emergency-off circuits or interlocked schemes where you need to drop the breaker without walking the panel. Interrupting capacity is the headline number here: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V. That 187 kA at 240 V is a high-fault rating — it can clear a short-circuit on a large transformer secondary or a heavy industrial feeder without the arc flashing over. At 690 V the rating drops to 3.7 kA, which is still adequate for most 690 V motor control centers but not for high-fault 690 V utility tie points. Rated insulation voltage is 800 V, so it's suitable for 690 V systems with margin. The breaker's power loss is 10 W maximum — negligible for panel thermal budgeting but worth noting if you're packing multiple breakers in a sealed enclosure.
Sizing and thermal performance
The 100 A rating holds flat across the entire operating temperature range: 40 °C through 70 °C, every entry shows exactly 100 A. That means no derating curve to calculate for elevated ambient temperatures — the breaker delivers its full rating in a hot panel or near a motor drive. Operating temperature limits are -25 °C to +70 °C, storage from -40 °C to +80 °C. Physical footprint: 105 mm wide, 181 mm high, 86 mm deep. That's a standard 3-pole MCCB form factor for a 100 A frame — fits most DIN-rail or mounting-plate layouts without surprises. No undervoltage release and no ground-fault monitoring on this variant, so if you need those functions, you're looking at a different order code within the 3VA family.