MCCB for line protection with high interrupting capacity
Its interrupting capacity hits 121 kA at 240 V AC, dropping to 75.6 kA at 415 V and 52.5 kA at 440 V — figures that matter when coordinating with upstream gear for selective coordination. Maximum power loss runs 14.6 W — a number to factor into enclosed panel thermal calculations if the breaker is fully loaded in a sealed box. The unit ships with a factory-fitted shunt trip (STL) and two auxiliary switches (HQ), so remote tripping and status feedback are wired in from the start.
Above that it derates: 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C.
That 101.6 mm width is a standard 4-inch footprint for a 4-pole MCCB — it fits the same cutout and bus-bar spacing as other SENTRON 3VA frames in this current class. The depth of 70 mm (2.76 in) leaves enough room behind the panel door for wiring and the shunt trip leads.