FZ (R) N21-12D indoor high-voltage vacuum load switch and composite apparatus,
used for circuit AC 50Hz, rated voltage 12kV, plays power distribution, control and
protection of electrical equipment function. It can replace the expensive circuit
breaker in a certain range, thus saving the power grid investment costs. The
combination of electrical appliances can be widely used in the ring network power
supply system in urban and rural areas. Under normal operation condition, it can
close, bearing and breaking rated current, also can break the specified short-circuit
current under abnormal conditions, especially suitable for the control and
distribution and protection of transformer.

1.Altitude: no more than 1000m;
2.The environment temperature: upper limit +40℃, lower limit -30℃;
3.Relative humidity: daily average value is not greater than 95%, monthly average is
not greater than 90%;
4.Saturated steam pressure: daily average value is not higher than 2.2×10-3 Mpa,
5.monthly average is not higher than 1.8×10-3 Mpa;
6.No severe vibration, no corrosive gas, no fire, no explosion danger place.

1.Over 20 years of manufacturing experience with good quality & stable product performance.

2. Hossin provides full line of MV-HV electrical products, including drop-out fuse, disconnector, surge arrester, vacuum circuit breaker, fuse, load switch, insulator etc.

3. Quick feedback, Timely quotation, Fast delivery

4. Complete set of testing machine to ensure product quality.

5. Hossin can customize non-standard product as per client’s requirement.

6. Hossin sells pressing parts& pressing mould at low price.

7. Hossin offers electrical installation & commission service.