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

Trapped Key Spring Handle Interlock with Single Key and Contact Block (M-HT-CB)

The M-HT-CB is a trapped key gate access lock with an internal contact block for monitoring the status of the switch. Turning the key unlocks the actuator and opens safety contacts, sending a signal to the monitoring circuit. The M-HTR-CB has a ‘key trapped’ during normal operation and becomes ‘free’ when the guard is open. The M-HT-CB has a ‘key free’ during normal operation and becomes ‘trapped’ when the guard is open.

  • Manufactured from Mirror Polished Die-Cast Metal
  • Ingress Protection up to IP67
  • 2NC + 2NO, 3NC + 1NO Monitoring Contact Blocks
  • Connection via 3 x M20
Part NumberPart Description
M-HTR-CB-22-NHandle Interlock with Spring – Single Key Free when Actuator Released – 2NC/2NO – 1/2″NPT
M-HTR-CB-31-NHandle Interlock with Spring – Single Key Free when Actuator Released – 3NC/1NO – 1/2″NPT
M-HTR-CB-22-MHandle Interlock with Spring – Single Key Free when Actuator Released – 2NC/2NO – M20
M-HTR-CB-31-MHandle Interlock with Spring – Single Key Free when Actuator Released – 3NC/1NO – M20
M-HT-CB-22-NHandle Interlock with Spring – Single Key Trapped when Actuator Released – 2NC/2NO – 1/2″NPT
M-HT-CB-31-NHandle Interlock with Spring – Single Key Trapped when Actuator Released – 3NC/1NO – 1/2″NPT
M-HT-CB-22-MHandle Interlock with Spring – Single Key Trapped when Actuator Released – 2NC/2NO – M20
M-HT-CB-31-MHandle Interlock with Spring – Single Key Trapped when Actuator Released – 3NC/1NO – M20

Note
Key sold separately

Technical Data
ApprovalscULus
Enclosure MaterialDie-Cast Metal / 316 Stainless Steel Head and Handle
Safety Contact typeIEC 60947-5-1 Double break Type Zb
TerminationClamp up to 2.5 sq. mm conductors
RatingUtilisation Category : AC15
Operational RatingAC15 A300 240V. 3A /120V 6A. ac
Thermal Current (Ith)10A
Rated Insulation Voltage (Ui)500V
Withstand Voltage (Uimp)2500V
Short Circuit Overload ProtectionFuse Externally 10A. (FF)
Operating Temperature-20 ... +60 °C
Enclosure ProtectionIP67
Holding Force3000N. (F1max.) 2307N. (Fzh)
Mechanical Life (B10d)1,000,000 cycles