ABB HLS S751/3-E20 Automatic main fuse unit

ABB Stotz S&J Main Circuit Breaker S751/3-E20

Manufacturer: ABB Stotz S&J
Designation: Main Circuit Breaker
Type: S751/3-E20
Tripping Characteristic: Other
Number of Poles: 3
Rated Current: 20 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: Busbar
Protection Class (IP): IP20
Size (according to DIN 43880): 6

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) and are designed for layman operation, suitable for the highest overvoltage category. Their application range is diverse: 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 for the protection of distribution circuits and as a disconnecting device with isolation 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 40 mm (12 mm x 5/10 mm). Regardless of the rated current of the S750, it can be directly connected to the busbar system via the lower terminal with up to 50 mm² and a maximum of 100 A. Devices of the S750 family include an integrated locking option that allows 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.

EAN: 4016779660518.