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  • Shunt trip coil voltage AC and DC types, voltage magnitude various voltage levels. DC24V power source for a fire when the fire power cut by the shunt trip coil power supply is a most convenient and simple. Shunt trip coil is energized only for a short time, over time to burn; so in the control loop i...
  • Actuator is driven by high voltage circuit breaker drive mechanism for closing and opening mechanism. Actuator should meet the following basic requirements: 1) should have sufficient operating power. 2) rapid action is required. 3) An operating mechanism is reliable, simple structure, small size, lig...
  • After vacuum circuit breaker after long-term use, once one of the following happens, it shows a vacuum interrupter may have been the end of its life, consider replacing. (1) of storage or use of a vacuum interrupter of the product exceeds the predetermined period (from the date of the factory vacuum ...
  • It refers to household purposes: to protect civil lighting distribution system or circuit breaker. The capacity of lighting circuits are generally not large, usually used as a molded case circuit breaker protection means mainly used to control lighting circuits under normal conditions and breaking, a...
  • Selection of a vacuum circuit breaker, generally the following aspects should be considered: (1) place frequent operation. Should be preferred vacuum circuit breaker for switching a capacitor bank, control the high voltage of the motor, the control and protection of electric transformers, electric tr...