Siemens SENTRON 3VA1112-6EF32-0BH0 — 125 A MCCB, 3-Pole, Line Protection
Its interrupting capacity reaches 220 kA at 240 V, 154 kA at 415 V, and 75.6 kA at 440 V — figures that place it in the high-breaking-capacity class for industrial distribution panels where fault currents are substantial.
Current Derating and Ambient Temperature
Above that, derating is linear: 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, and 114 A at 70 °C.
Dimensions are 130 mm height, 76.2 mm width, and 70 mm depth — a standard 3-pole MCCB footprint that mounts directly onto a DIN rail or panel-mount base plate. The 76.2 mm width (3 inches) matches the typical 3-pole MCCB slot in a SENTRON distribution board; verify gland-plate clearance for the 70 mm depth when the breaker is mounted near the enclosure door.