KL-FSB-1S-6.4-1-D -  Castell Safety International Ltd  -  Castell Key Interlock Switchgear

  • Product Code: KL-FSB-1S-6.4-1-D
  • Product name : KL-FSB-1S-6.4-1-D
  • Manufacturer Castell Safety International Ltd
  • Stock Qty: (Pre-Order)
  • Ship From: Pune, India
  • MPN: KL-FSB-1S-6.4-1-D
  • Rating : 5 stars (based on 1 ratings)
Castell Locks Delivery : 10-15 Business Days
Product Specification
Product Castell Trapped Key Interlock
Product Type Dual Key Bolt Interlock
Lock portion type FS (Also Available in Q style. Please see attached image 2)
Key Condition D = double key condition
L Retracted Bolt Length 6.4 mm
Extended bolt length 25.40 mm
Secondary lock portions 1S = 1 secondary key (2 locks)
Form 1
Lock Portion Symbol (Primary Key ) FS up to 3 digits / Q up to 6 digits
Lock Portion Symbol (Secondary Key ) FS up to 3 digits / Q up to 6 digits
Product Datasheet
1 KL-FSB-1S-12.7-1-D 
2 KL-FSB-1S-12.7-1-D 
Castell Safety International Ltd LEI Indias is an Authorised Distributor of Castell Locks by Castell Safety International.


The Castell Trapped Key Interlock KL are used as a part of a safety system. A typical application is where the electrical and pneumatic supplies to the machine are switched on and the access doors to the hazardous area are locked closed.

Key A and B are trapped in the KL bolt interlock, preventing acces to the machine area. To enter the area, the pneumatic supply must be turned off. Turning the keys in the KL bolt interlock will extend its bolt. The released keys ensure the bolt remains in extended position locking off the disconnector.

The released keys can now be taken to the machine area to gain acces via the AI acces interlocks.

The disconenctor cannot be switched on until both access doors are locked closed and both keys replaced in the KL bolt interlock.

Tags: Castell Trapped Key Interlocks, Castell Safety Interlocks, Castell, Bolt Interlocks, Switchgear Interlock