ABB HLSS751-E50 (set of 3 L1,L2,L3) Main circuit breaker

The selective main circuit breakers of the S750 series are certified according to DIN VDE 0641-21 as voltage-independent selective main line protection switches (SHU), designed for layman operation and intended for the highest overvoltage category. Their application range is diverse: they serve as a disconnecting device at the metering point according to the TAB of the network operators or VDE-AR-N 4101, as well as in all low-voltage main distributions to protect distribution circuits and as a disconnection device with a separation function. Noteworthy are the special selectivity features that ensure high system availability. The S750 series is designed for direct mounting on a 4- or 5-pole busbar system of 40 mm (12 mm x 5/10 mm). Regardless of the rated current of the S750, up to 50 mm² and a maximum of 100 A can be directly fed into the busbar system through the lower terminal. Devices in the S750 family include an integrated locking option that allows for simultaneous blocking of the 3 poles of a three-phase supply. The integrated locking slider locks in the on or off position and can additionally be secured with a padlock, wire seal, or cable tie.