Siemens SENTRON 3VA1010-3ED42-0CA0 — 100 A, 4-Pole MCCB with Undervoltage Release
It carries a 75.6 kA interrupting capacity at 240 V and 52.5 kA at 415 V, giving solid fault-clearing headroom for most low-voltage commercial and light industrial services.
The 100 A rating holds across 40 °C to 50 °C without derating; at 55 °C it drops to 98 A, at 60 °C to 96 A, and at 70 °C to 91 A. The 800 V rated insulation voltage means the breaker is suitable for 480/277 V and 600/347 V systems with margin. The 27.5 W maximum power loss is the heat the breaker dissipates at full rated current — factor that into enclosure ventilation if you're packing multiple breakers in a small panel.
The 4-pole design (three phases plus neutral) is common for three-phase four-wire systems. The undervoltage release requires a separate control voltage — verify the coil rating matches your control circuit before wiring. No communication function or ground-fault monitoring is built in; those are separate accessory modules if needed.