ABB 1SDA071921R1 E6.2H 6300 Ekip Dip LI 4p F HR 100kA Air Circuit Breaker

The ABB 1SDA071921R1 is a SACE Emax 2 E6.2H 6300 Ekip Dip LI 4p F HR air circuit breaker, a fixed-mount 4-pole unit rated 6300 A with a 100 kA breaking capacity at 400 V AC. Rear horizontal terminals bolt directly to busbars, and the Ekip Dip LI electronic release handles protection up to 690 V AC.

Technical Specifications

Selection Notes

In the fixed, rear-horizontal E6.2H frame, this 6300 A unit carries a 100 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 H performance level holds a flat 100 kA breaking capacity from 400 V through 690 V AC; where the calculated fault level at this point exceeds that, the V-class sibling at 150 kA (400-440 V AC) is the one to specify instead. 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.