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.
Cutting and Protection Devices
S752DR-K20 sel. main CB K-Char.,25kA,20A,2P
Nortécnica Ref:
EAN:
4016779838306
Description
Technical Information
Attributes
Mounting method
DIN rail
Frequency
-
Rated current
20
Rated voltage
-
Release characteristic
Other
Rated insulation voltage Ui
690
Número de polos
2
Rated switching capacity
25
Overvoltage category
4
Pollution degree
3
Rated surge voltage invariability
-
Degree of protection IP
IP20
Concurrently switching neutral conductor
No
Brands
ABB
Descrição Longa
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.