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

Explosion Proof Tongue Interlock Safety Switch (KP-EX)

The KP-EX is a tongue operated safety interlock, suitable for use in hazardous environments. They mount directly to the leading edge of sliding, hinged, or lift off machine guards and feature IDEM’s reliable anti-tamper cam system.


  • Body Material: Red Polyester
  • Ingress Protection: IP67
  • Contacts: 2-Pole or 4-Pole Ex Rated Contact Blocks
  • Zones: 1, 21, 2, 22
  • Ex Marking: Exd IIC T6 (-20 ≤ Ta ≤ +60C) Gb / Ex tb IIIC T85C (-20 ≤ Ta ≤ +60C) Db
Part Number Part Description
200016 KP-Ex 3M (4 core) ‘1NC 1NO’
200016-SS KP-Ex 3M (4 core) ‘1NC 1NO’ SS head
200016A KP-Ex 3M (4 core) ‘1NC 1NO’ – Std Actuator
200016A-SS KP-Ex 3M (4 core) ‘1NC 1NO’ SS head – std actuator
200016F KP-Ex 3M (4 core) ‘1NC 1NO’ – flat actuator
200016F-SS KP-Ex 3M (4 core) ‘1NC 1NO’ SS head – flat actuator
200016HF KP-Ex 3M (4 core) ‘1NC 1NO’ – HF Actuator
200016HF-SS KP-Ex 3M (4 core) ‘1NC 1NO’ SS head – HF actuator
200016HFH KP-Ex 3M (4 core) ‘1NC 1NO’ – HFH SS Actuator
200016HFH-SS KP-Ex 3M (4 core) ‘1NC 1NO’ SS head – HFH Actuator
200016PF KP-Ex 3M (4 core) ‘1NC 1NO’ – PF Actuator
200016PF-SS KP-Ex 3M (4 core) ‘1NC 1NO’ SS head – PF actuator
200019 KP-Ex 3M (4 core) ‘2NC’
200019-A KP-Ex 3M (4 core) ‘2NC’ – std actuator
200019-SS KP-Ex 3M (4 core) ‘2NC’ SS head
200019A-SS KP-Ex 3M (4 core) ‘2NC’ SS head – std actuator
200019F KP-Ex 3M (4 core) ‘2NC’ – flat actuator
200019F-SS KP-Ex 3M (4 core) ‘2NC’ SS head – flat actuator
200019HF KP-Ex 3M (4 core) ‘2NC’ – HF Actuator
200019HF-SS KP-Ex 3M (4 core) ‘2NC’ SS head – HF actuator
200019HFH KP-Ex 3M (4 core) ‘2NC’ – HFH SS Actuator
200019HFH-SS KP-Ex 3M (4 core) ‘2NC’ SS Head – HFH SS Actuator
200019PF KP-Ex 3M (4 core) ‘2NC’ – PF Actuator
200019PF-SS KP-Ex 3M (4 core) ‘2NC’ SS head – PF actuator
200026 KP-Ex 3M ‘2NC 2NO’
200026-A KP-Ex 3M (4 core) ‘2NC 2NO’ – std actuator
200026-SS KP-Ex 3M (4 core) ‘2NC 2NO’ SS head
200026A-SS KP-Ex 3M (4 core) ‘2NC 2NO’ SS head – std actuator
200026F KP-Ex 3M (4 core) ‘2NC 2NO’ – flat actuator
200026F-SS KP-Ex 3M (4 core) ‘2NC 2NO’ SS head – flat actuator
200026HF KP-Ex 3M (4 core) ‘2NC 2NO’ – HF Actuator
200026HF-SS KP-Ex 3M (4 core) ‘2NC 2NO’ SS head – HF actuator
200026HFH KP-Ex 3M (4 core) ‘2NC 2NO’ – HFH SS Actuator
200026HFH-SS KP-Ex 3M (4 core) ‘2NC 2NO’ SS head – HFH Actuator
200026PF KP-Ex 3M (4 core) ‘2NC 2NO’ – PF Actuator
200026PF-SS KP-Ex 3M (4 core) ‘2NC 2NO’ SS head – PF actuator

Important Note
Comes with 3m of pre-wired cable (longer available on request).
Actuator sold separately.

Technical Data
ApprovalsIECEx, cULus on LS-Ex Internal Contact Block
Technology Tongue Interlock (Non Locking)
Housing MaterialRed, Polyester
Head MaterialPolyester or Stainless Steel
Actuator Entry Minimum Radius175mm Standard 100mm Flexible
Maximum Approach/Withdrawal Speed 600mm/s
Enclosure ProtectionIP67
Operating Temperature-25 ... +60 °C
Switching frequency (LS-Ex)1.0 Hz maximum
Mechanical Life Expectancy (LS-Ex)1,000,000 switches
Electrical Life Expectancy (LS-Ex) Tested to 1,000,000 cycles at 24V. 0.2A

Ex Classification
ATEX Zones 1,21,2,22
II 2G Ex mb IIC T6 Gb
II 2D Ex mb IIIC T80C Db