Its interrupting capacity reaches 121 kA at 240 VAC and 75.6 kA at 415 VAC, giving it the headroom to clear high-fault conditions without cascading upstream — a key spec for low-voltage main or feeder duty where available fault current is high.
Thermal Derating and Operating Envelope
The breaker holds its full 100 A rating up to 50 °C ambient, then derates linearly: 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. That curve matters when the MCCB lives in a crowded, warm enclosure — the actual continuous current you can count on at 60 °C is 96 A, not the nameplate 100 A. Maximum power loss is 25 W.
Mounting and Auxiliary Configuration
The 3VA1010-4ED32-0AH0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that fits SENTRON distribution panels and most DIN-rail or screw-mount enclosures.