3AV3 Spring Operating Mechanisms

Model 3AV3 spring operating mechanism is mainly used as a necessary component in Model ZN85-40.5 indoor high voltage vacuum circuit breaker.

The performance of this operating mechanism fully meets the technical specifications of operating mechanism under the national standard GB1984-2003 “AC High Voltage Circuit Breaker” as well as IEC56 standard.

Technical Features of 3AV3 Spring Operating Mechanisms

• The modular spring operating mechanism is convenience in the manufacture and maintenance.
• The key parts of the operating mechanism are made of superior quality alloy and the operating mechanism grips are made of the high quality cold rolled sheet with a high structural strength.
• The component surface adopt the cathode electrophoretic painting with a perfect corrosion resistance.
  The linear-motion closing spring design minimizes the effect of spring self-vibration on the fatigue strength and it is useful to improve the product stability.
• Both AC and DC power operation and control are available and it is convenience for different users.