Solenoid Interlocking Device


Solonoid Interlocking device are unique combination of Castel Lock and Key arrangement to ensure definite sequence of operation of one or more industrial and substation equipment as per customer requirement.

Especialy used in Dry Transformers, Switchgears, Substation & Industrial Equipments.


  • Each job is engineered by our experienced team to give a unique lock and key combination.
  • Assures series and sequences of appropriate operations.
  • Unique lock and key combinations make it full proof.
  • For any of the models the equipment cannot be utilized even if any one of the keys is missing.
  • Designed ergonomically for easy and smooth operation.
  • Visible lock/unlock condition.
  • Excellent finish.
  • Robust construction for long life.
  • Master key if asked by the supplier along with the supply is provided.



  • Outside Control Key can be locked with several side lock key
  • Different models having solenoid with NO or NC contact can be made
  • Combination having different series of operations can be made.