At 55 °C it derates to 78 A, at 60 °C to 77 A, at 65 °C to 75 A, and at 70 °C to 74 A.
Interrupting ratings across voltage levels
The 3VA1180-5EF36-0BH0 delivers 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. Selectivity studies should use the voltage-specific value, not the highest number. The 17 kA floor at 690 V still covers most industrial 690 V feeder duty.
Auxiliary and release configuration
The auxiliary switches report breaker position; the trip alarm signals a fault trip separately from manual open. The UVR provides undervoltage protection — if control voltage falls below dropout threshold, the breaker opens. No ground-fault monitoring or communication function on this variant.
Physical fit and environmental limits
The trip indicator gives a visual flag on fault trip — useful for troubleshooting without opening the panel door.