Main circuit breaker with rail adapter - Selective mains circuit breaker 3-p 50A S751/3-E50

Main circuit breaker with rail adapter - Selective mains circuit breaker 3-p 50A S751/3-E50 – ABB – 2CDS781001R4502 – 4016779660471: Main circuit breaker with rail adapter S751/3-E50 Tripping characteristic E, number of poles 3, rated current 50A, rated voltage 400V, rated insulation voltage Ui 690V, rated breaking capacity 25kA, frequency 50Hz, overvoltage category 4, degree of pollution 3, rated impulse withstand voltage 6kV, size (according to DIN 43880) 6, type of mounting DIN rail, degree of protection (IP) IP40, the selective main circuit breakers of the S750 series are certified according to DIN VDE 0641-21 as voltage-independent selective main circuit breakers (SHU) and can be operated by laypersons and are designed for the highest overvoltage category. Their area of application is diverse: as a disconnecting device at the meter station in accordance with the TAB of the network operators or VDE-AR-N 4101 as well as in all low-voltage main distribution boards to protect distribution circuits and as an isolating device with a disconnecting function. The special selectivity properties to ensure high system availability should be emphasized. The S750 series is intended for direct mounting on a 4-pole or 5-pole busbar system 40mm (12mm x 5/10mm). Regardless of the rated current of the S750, up to 50mm² and max. 100A can be fed directly to the busbar system via the lower terminal. Devices of the S 750 family include an integrated blocking option that enables the 3 poles of a three-phase supply to be blocked at the same time. The integrated locking slide locks in the ON or OFF position and can also be secured with a padlock, wire seal or cable tie.