Breaking Capacity and Selectivity Coordination
The 3VA1180-4EF32-0JH0 delivers 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. These figures govern selectivity coordination with downstream breakers: at 415 V, the 75.6 kA rating means it can safely interrupt a fault up to that level without upstream devices needing to clear, preserving power to unaffected feeders. For 690 V applications, the 11.9 kA limit is the ceiling — verify the available fault current at the installation point stays below that threshold.
Thermal Derating and Ambient Temperature
The breaker carries its full 80 A rating from 40 °C through 50 °C ambient. Above that, derating applies: 76.8 A at 55 °C, 75.2 A at 60 °C, 73.6 A at 65 °C, and 72 A at 70 °C. In a crowded panel with elevated internal temperatures, size the load circuit to the derated value at the expected ambient — not the 80 A nameplate. The operating temperature range is -25 °C to 70 °C; storage range extends from -40 °C to 80 °C.
Auxiliary and Trip Configurations
This variant includes 2 auxiliary switches plus 1 trip alarm switch (HQ configuration), and a shunt trip release (STL) for remote tripping. The integrated auxiliary trip order code is 3VA9688-0BL32. There is no undervoltage release, no ground fault monitoring, no phase failure detection, and no communication function — it is a straightforward line-protection breaker without add-on electronics. A voltage trigger is present for remote signaling. The mechanical endurance is rated at 15,000 operations.
Physical Fit and Panel Integration
The 3VA1180-4EF32-0JH0 measures 130 mm high, 76.2 mm wide, and 70 mm deep. The front face carries an IP40 protection rating — suitable for general-purpose indoor panels where tools are required to access live parts. The 3-pole footprint matches standard SENTRON 3VA mounting rails; verify the panel cutout and busbar spacing against the 76.2 mm width before committing the BOM.