The 3-pole frame delivers interrupting capacities of 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V (–).
Trip unit and selectivity
The ETU550 electronic release supports adjustable long-time, short-time, instantaneous, and ground-fault protection curves, which means this breaker can be coordinated downstream of a larger MCCB or upstream of branch MCBs without nuisance tripping. The 60–480 A adjustment band lets the same frame serve multiple load sizes — useful when stocking a single spare for a range of feeders.
The communication function allows integration with a BMS or PLC for remote monitoring and trip-event logging.
