Air Insulated Switchgear
Cubicle Types

Switch Disconnector Cubicle, type SDC

Switch disconnector cubicle type SDC, is mainly used as an incoming, ring or branch cubicle. The basic unit is equipped with an SF6-insulated, 3-position switch

disconnector type SFG with its operation mechanism. The 3-position switch disconnector may be in one of three positions, “closed”, “open” or “earthed”, therefore preventing incorrect operation.


Access to the cable compartment is possible in earthed position. “Open” and “earthed” positions are “visible” through the inspection windows placed behind the low voltage compartment door. Inspection of cable connections and fault indicators, when used, is easily carried out through the front-door window. For safe cable testing a unique interlocking mechanism is included as standard feature.



Basic equipment

Top unit, including

  • 3-position switch disconnector
  • operating mechanism with
  • mechanical position indication
  • enclosure of busbar compartment
  • integrated low voltage
  • Compartment
  • interlocking unit
  • busbars
  • earthing bar


Bottom unit, including

  • enclosure of cable compartment
  • cable entry with cable support



Cubicle Accessories

  • integrated voltage indicators or socket interface for portable indicators
  • auxiliary contacts for close (2NO+2NC) and earth (2NO+2NC) position
  • gas density indication with alarm contact
  • motor operation device
  • current transformers
  • arc-gas channel
  • channel for control cables
  • surge arresters
  • anti condensation heater
  • through-going earthing bar
  • apparatus earthing bar
  • short-circuit indicator





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Jl. Hayam Wuruk No. 4 E-G-I

Jakarta Pusat 10120