ABB S751/3DR-E40 Main circuit breaker, selective, 40 A, 3 x 1 pole

The selective main circuit breakers of the S750DR series are certified in accordance with DIN VDE 0641-21 as voltage-independent selective main circuit breakers (SHU), can be operated by laypersons and are designed for the highest overvoltage category. They can be used in a wide range of applications: as a disconnecting device at the metering point in accordance with the TAB of the grid operators or VDE-AR-N 4101, as well as in all low-voltage main distribution boards for protecting distribution circuits and as a disconnecting device with disconnecting function. The special selectivity properties to ensure high system availability should be emphasized. They are designed for mounting on a 35 mm DIN EN 60715 top-hat rail. Devices in the S 750DR family include an integrated blocking option that enables simultaneous blocking of the 3 poles of a three-phase supply. The integrated locking slide locks in the ON or OFF position and can also be secured with a padlock, wire seal or cable tie. The switching status can be monitored via an attachable auxiliary switch.