Major Components of Disconnect Switches
Low-voltage disconnect switch partsemblies include buts and subas are not limited to:
- Frame or enclosure
- Insulating system
- Current carrying components
- Contact systems
- Arc extinguishers
- Operating mechanism
- Interlocks
- Auxiliary or pilot devices
Medium-voltage disconnect switch parts and subassemblies include but are not limited to:
- Enclosure
- Interlocks
- Interphase barriers
- Arc extinguishers
- Arcing contacts or blades
- Live parts such as fuse holders
- Operating mechanism
- Spring charging motor
- Push rods
- Vacuum bottles
- Shunt trip assembly
- Thermostat
- Space heater
- Door closures
- Viewing window
- Limit switches
- Control circuit
- Voltage transformer
- Current transformer
- Control power transformer
- Protective relays
- Insulating materials or devices
- Bus
- Bus barriers
- Cable terminations
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