ABB S751/3DR-K16

ABB Stotz S&J Main Circuit Breaker S751/3DR-K16

Manufacturer: ABB Stotz S&J
Description: Main circuit breaker 16A K 25kA 3x1P
Type: S751/3DR-K16
Tripping characteristic: Other
Number of poles: 3
Rated current: 16 A
Rated voltage: 400 V
Rated insulation voltage Ui: 690 V
Rated short-circuit breaking capacity: 25 kA
Switchable neutral conductor: No
Frequency: 50 Hz
Overvoltage category: 4
Degree of pollution: 3
Rated impulse voltage withstand: 6 kV
Mounting type: DIN rail
Protection class (IP): IP20
Size (according to DIN 43880): 3

The selective main circuit breakers of the S750DR series are certified as voltage-independent selective main circuit breakers (SHU) according to DIN VDE 0641-21, designed for layman operation and suitable for the highest overvoltage category. Their application area is diverse: as a disconnecting device at the meter location according to the TAB of the network operators or VDE-AR-N 4101, as well as in all low-voltage main distributions for the protection of distribution circuits and as a disconnection device with isolation function. Noteworthy are the special selectivity characteristics to ensure high system availability. They are designed for mounting on a 35 mm DIN rail according to DIN EN 60715. Devices of the S750DR family include an integrated locking feature that allows simultaneous blocking of the 3 poles of a three-phase supply. The integrated locking slider can be locked in either ON or OFF position and can additionally be secured with a padlock, wire seal, or cable tie. The switching state can be monitored via an attachable auxiliary switch.