IEC SF6 Mechanical Circuit Breaker HD4/R
HD4/R are used in secondary MV distribution and in MV/LV transformer substations. They are available in fixed version with right-hand side operating mechanism. Circuit-breakers with rated voltage up to 24 kV can be fitted with current sensors and PR521 overcurrent release and can be used in unmanned substations without auxiliary power supply.
| Ratings |  |
| Rated voltage (kV) |
12 - 36
|
|
|
| Rated current (A) |
630 - 1250
|
|
|
| Rated breaking current (kA) |
12,5 - 25
|
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Fields of application
The circuit-breakers in the HD4/R series are used in all applications for medium voltage secondary distribution and in MV/LV transformer substations in factories, workshops in the industrial sector in general, and in the service sector.
Thanks to application (on request) of the PR521 self-supplied microprocessor-based overcurrent release, HD4/R circuit-breakers are suitable for use in unmanned MV/LV transformer substations without auxiliary power supply.
