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

Explosion Proof Tongue Interlock Safety Switch (K-SS-EX)

The K-SS-EX is a tongue operated stainless steel 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: 316 Stainless Steel
  • Ingress Protection: IP69K
  • 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 NumberPart Description
208016K-SS-Ex 3M ‘1NC 1NO’
208016AK-SS-Ex 3M ‘1NC 1NO’ – std actuator
208016FK-SS-Ex 3M ‘1NC 1NO’ – flat actuator
208016HFK-SS-Ex 3M ‘1NC 1NO’ – HF Actuator
208016HFHK-SS-Ex 3M ‘1NC 1NO’ – HFH Actuator
208016PFK-SS-Ex 3M ‘1NC 1NO’ – PF actuator
208019K-SS-Ex 3M ‘2NC’
208019AK-SS-Ex 3M ‘2NC’ – std actuator
208019FK-SS-Ex 3M ‘2NC’ – flat actuator
208019HFK-SS-Ex 3M ‘2NC’ – HF Actuator
208019HFHK-SS-Ex 3M ‘2NC’ – HFH Actuator
208019PFK-SS-Ex 3M ‘2NC’ – PF actuator
208026K-SS-Ex 3M ‘2NC 2NO’
208026AK-SS-Ex 3M ‘2NC 2NO’ – std actuator
208026FK-SS-Ex 3M ‘2NC 2NO’ – flat actuator
208026HFK-SS-Ex 3M ‘2NC 2NO’ – HF Actuator
208026HFHK-SS-Ex 3M ‘2NC 2NO’ – HFH Actuator
208026PFK-SS-Ex 3M ‘2NC 2NO’ – 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
TechnologyTongue Interlock (Non Locking)
Material316 Grade Stainless Steel
Actuator Entry Minimum Radius175mm Standard 100mm Flexible
Maximum Approach/Withdrawal Speed600mm/s
Enclosure ProtectionIP67, IP69K (NEMA 6)
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