Technical Information
Item condition |
New |
Manufacture name |
S754DR-K25 Selective Main Circuit Breaker |
Brand |
ABB
|
Categories |
Breakers
|
Mounting method |
DIN rail |
Frequency |
50 Hz |
Rated current |
25 A |
Rated voltage |
400 V |
Release characteristic |
K |
Rated insulation voltage Ui |
690 V |
Number of poles |
4 |
Rated switching capacity |
25 kA |
Over voltage category |
4 |
Pollution degree |
3 |
Rated surge voltage invariability |
6 kV |
Degree of protection (IP) |
IP40 |
Concurrently switching neutral conductor |
FALSE |
Construction size according to DIN 43880 |
6 |
Packing details
Packing level 1 |
4016779879880 |
Description
Selective main circuit-breakers of the S 750 DR series are SMCBs based on DIN VDE 0641-21 with voltage-independent operating principle. This means that they do not rely on a control circuit to make or break contact (SHU) and are therefore particularly suitable for use in energy distributionsystems with maximum availability requirements. They offer total selectivity to downstream MCBs and outstanding selectivity to upstream protective devices due to unique current limiting selectivity.