That keeps the spec simple for a BOM line: what you order is what protects the feeder.
At 55 °C the breaker carries 98 A; at 70 °C it derates to 91 A. Above that, the continuous current drops linearly, so the load served must be de-rated accordingly. The 70 mm depth, 76.2 mm width, and 130 mm height fit the standard SENTRON 3VA1 footprint. Maximum power loss is 27.5 W.
Undervoltage release and auxiliary options
The base switch variant is 3VA11105ED320AA0; this order code adds the UVR. Rated insulation voltage is 800 V, and the operating range covers -25 °C to 70 °C ambient, with storage from -40 °C to 80 °C.
