Product description

SFZN21-12D / T630-20, SFZRN21-12D / T125-31.5 high-voltage vacuum load switch and combination of electrical For three-phase AC 12kV, 50Hz power distribution system, with a compact, small size, light weight, Closing and breaking capacity, safe and reliable, and fuse with the use (referred to as the combination of electrical appliances). Can replace the higher cost of the circuit breaker. Its operation and maintenance is simple and convenient.

Model and meaning

Environmental conditions

○ Altitude ≤1000m;

○ the ambient temperature of a 25 ℃ ~ +40 ℃;

○ relative humidity: daily average of not more than 95%. Monthly average of not more than 90%;

○ Locations where there is no conductive dust, corrosive gas, or water vapor.

○ Locations where there is no risk of fire and explosion;

○ Place where there is no severe vibration, inclination less than 3 °.

Rated voltage: 12KV

Rated frequency: 50Hz

Rated current: 630A / 125A

Product type and meaning

Structural characteristics, performance

SFZN21-21 type load switch and combined electrical mainly by the frame, isolation switch (or fuse as isolation switch), vacuum interrupter, grounding switch, operating mechanism and so on.

This product is compact, small size, long life, closing off strong ability, easy operation and maintenance. Vacuum switch with electric operating mechanism and energy storage spring, can achieve a rapid sub-operation. Isolation switch, vacuum switch.

The earthing switches are interlocked. To prevent misuse.