product specification :

 Apply to the following 12 kV and the electricity system, the role of a sub, a load current, overload and short circuit current use, but also to operate frequent places.

Main features: Breaking excellent performance, arcing short time. On the shelves within the insulation and air to achieve. Can be allowed to carry disconnectors. , Long life, full capacity of not breaking 30 overhaul, insulation reliable. Simple structure, high mechanical reliability. Spring with actuator, Ⅲ-filthy silicone rubber casing and insulation ceramic vacuum chamber.

Main technical parameters:

Rated Voltage: 12 kV

Current Rating: A 630,1250

Breaking rated short circuit currents: 20 kA

Rated closing short circuit current (peak): 50 kA

Rated current short-term tolerance: 20 kA

Rated current peak tolerance: 50 kA

Rated short duration: 4 S

Mechanical life: 10000,

Breaking rated short-circuit breaking current number: 30

Rated operating order: -0.3-s-s-a-a--180

Rated insulation level (altitude of 1000 meters): 1 minute frequency. Rating: Stem Test: 42 kV; wet test (for the external insulation): 34 kV; lightning impulse withstand voltage (peak): 75 kV

Full off time: ≤ 0.125 S

Rated short duration: 4 S

Rated operating voltage and auxiliary circuit rated voltage (TAC, DC): 220 V

Flow Release Current Rating: 5 A