Leading Manufacturer of Safety Interlock Switches and Machine Guard Safety Switch Devices for Automation and Process Safety

Trapped Key Tongue Interlock with Dual Key (M-TD-11)

The M-TD-11 Trapped Key Interlock operates by using a tongue locking mechanism, which is locked when the first key is removed. Inserting and turning the appropriate key allows the secondary key to be released, unlocking the tongue and allowing access to the hazardous area. The second key (often referred to as the personnel key) should be taken inside the hazardous area to reduce the likelihood of an inadvertent start-up.

  • Manufactured from Die-Cast Metal
  • Holding Force up to F1Max 3000N
Part No.Part Description
M-TD-11Tongue Interlock Dual Key – 1 Key Trapped 1 Key Free – Actuator Released

Key and actuator sold separately

Technical Data
MaterialDie-Cast Metal
Operating Temperature-25 ... +60 °C
Holding Force3000N. (F1max.) 2307N. (Fzh)
Mechanical Life (B10d)1,000,000 cycles