ABB 1SDA071931R1 E6.2V 6300 Ekip Dip LI 4p F HR 150kA Air Circuit Breaker

Bolted straight to the busbars through rear horizontal terminals, the ABB 1SDA071931R1 is a fixed SACE Emax 2 E6.2V air circuit breaker rated 6300 A, 4-pole, with a 150 kA breaking capacity at 400 V AC. Its Ekip Dip LI electronic release covers the full 690 V AC operating range.

Technical Specifications

Selection Notes

Bolted to the busbars via rear horizontal terminals, this 6300 A E6.2V breaker delivers 150 kA breaking capacity. Its Ekip Dip LI release covers only L (overload, long-time), I (instantaneous), with no settable short-time delay. That makes it a faster-clearing choice for outgoing feeder positions where selective coordination with a smaller breaker is not required. Where the installation needs the breaker to ride through a downstream fault for selectivity, the Ekip Dip LSI sibling at the same 6300 A rating adds that S-function delay. The V performance level pushes Icu to 150 kA at 400-440 V AC (dropping to 130 kA at 500-525 V and 100 kA at 690 V), a step above the H-class sibling's flat 100 kA across the same voltage range — worth the difference only where the prospective fault current at this busbar actually exceeds 100 kA. The fourth pole switches the neutral at 50% of the phase rated current, sized for TN systems where neutral unbalance load stays well below the phase loading.