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

Trapped Key Interlock with Solenoid Controlled Release Key (M-TS-SR)

The M-TS-SR Trapped Key Interlock operates by using a solenoid controlled release key, which can be removed upon requesting entry. Turning and removing the key unlocks the actuator and allows access to the hazardous area. The released key (often referred to as the personnel key) should be taken inside the hazardous area to reduce the likelihood of an inadvertent start-up.


  • Material: Die-Cast Metal
  • Holding Force: F1Max 3000N
  • Ingress Protection: IP67
Part No. Part Description
820001 M-TS-SR, Manual Release, 2NC 2NO (M20)
820001-ES M-TS-SR, Manual Release, 2NC 2NO (M20) + E-Stop Button
820001-PB M-TS-SR, Manual Release, 2NC 2NO (M20) + Push Button
820001-PB-ES M-TS-SR, Manual Release, 2NC 2NO (M20) + Push Button & E-Stop
820002 M-TS-SR, Manual Release, 3NC 1NO (M20)
820002-ES M-TS-SR, Manual Release, 3NC 1NO (M20) + E-Stop Button
820002-PB M-TS-SR, Manual Release, 3NC 1NO (M20) + Push Button
820002-PB-ES M-TS-SR, Manual Release, 3NC 1NO (M20) + Push Button & E-Stop
820051 M-TS-SR-RR, Manual Release 2NC 2NO (M20)
820051-ES M-TS-SR-RR, Manual Release 2NC 2NO (M20) + E-Stop Button
820051-PB M-TS-SR-RR, Manual Release 2NC 2NO (M20) + Push Button
820051-PB-ES M-TS-SR-RR, Manual Release 2NC 2NO (M20) + Push Button & E-Stop
820052 M-TS-SR-RR, Manual Release 3NC 1NO (M20)
820052-ES M-TS-SR-RR, Manual Release 3NC 1NO (M20) + E-Stop Button
820052-PB M-TS-SR-RR, Manual Release 3NC 1NO (M20) + Push Button
820052-PB-ES M-TS-SR-RR, Manual Release 3NC 1NO (M20) + Push Button & E-Stop
820301 M-TS-SR, No Manual Release, 2NC 2NO (M20)
820301-ES M-TS-SR, No Manual Release, 2NC 2NO (M20) + E-Stop Button
820301-PB M-TS-SR, No Manual Release, 2NC 2NO (M20) + Push Button
820301-PB-ES M-TS-SR, No Manual Release, 2NC 2NO (M20) + Push Button & E-Stop
820302 M-TS-SR, No Manual Release, 3NC 1NO (M20)
820302-ES M-TS-SR, No Manual Release, 3NC 1NO (M20) + E-Stop Button
820302-PB M-TS-SR, No Manual Release, 3NC 1NO (M20) + Push Button
820302-PB-ES M-TS-SR, No Manual Release, 3NC 1NO (M20) + Push Button & E-Stop
820351 M-TS-SR-RR, No Manual Release 2NC 2NO (M20)
820351-ES M-TS-SR-RR, No Manual Release 2NC 2NO (M20) + E-Stop Button
820351-PB M-TS-SR-RR, No Manual Release 2NC 2NO (M20) + Push Button
820351-PB-ES M-TS-SR-RR, No Manual Release 2NC 2NO (M20) + Push Button & E-Stop
820352 M-TS-SR-RR, No Manual Release 3NC 1NO (M20)
820352-ES M-TS-SR-RR, No Manual Release 3NC 1NO (M20) + E-Stop Button
820352-PB M-TS-SR-RR, No Manual Release 3NC 1NO (M20) + Push Button
820352-PB-ES M-TS-SR-RR, No Manual Release 3NC 1NO (M20) + Push Button & E-Stop

Note
Key sold separately
Actuator sold separately
Optional pushbutton (PB) and illuminated emergency stop (ES) available
LED2 Green is an auxiliary indication circuit for optional user use

Technical Data
MaterialDie-Cast Metal with 316 Stainless Steel Head
Operating Temperature-20 ... +40 °C
Holding Force3000N. (F1max.) 2307N. (Fzh)
Mechanical Life (B10d)1,000,000 cycles
Solenoid Voltage24V.dc (+/- 10%)
LED2 voltage24V.dc (+/- 10%)
Conduit exitM20
Enclosure protectionIP67