The Siemens 3VA1110-4EF32-0JC0 is a SENTRON molded case circuit breaker rated for 100 A continuous at 40 °C, with a 121 kA interrupting capacity at 240 V. At 415 V it still holds 75.6 kA, and at 690 V it's 11.9 kA, which tracks the physics of arc extinction in air. This is a line-protection design — no ground-fault module, no communication function, no undervoltage release fitted from the factory. The 3-pole footprint (76.2 mm wide × 130 mm tall × 70 mm deep) fits standard SENTRON panel cutouts and busbar arrangements.
At 55 °C it drops to 98 A, at 60 °C to 96 A, at 65 °C to 94 A, and at 70 °C to 91 A.
It's designed for DIN-rail or screw-mount installation in distribution panels. The shunt trip (STL) and auxiliary switches are factory-fitted — no field-assembly required for those functions.