Tongue Interlock Safety Switches with OSSD (Stainless Steel)
The Z-Range safety tongue interlocks feature 2 OSSD PNP outputs and internal self-monitoring to maintain a high level of functional safety, even when connected in series.
Featuring a reliable an anti-tamper cam system, they are suitable for fitting on the leading edge of sliding, hinged or lift off machine guards.
You can connect a maximum of 30 Z-Range tongue interlocks on a single system or, mix a combination of other Z-Range products for up to SIL3/PLe safety.
For the harsh environments like Food Processing, Pharmaceutical and Petro-Chemical Industries the Stainless Steel 316 range offers protection up to IP69K for use in high pressure chemical cleaning or CIP/SIP applications. The IP69K enclosure protection (maintained by a double seal lid gasket) and can be high pressure hosed with detergent up to +80C and 100psi.
Product range features:
- Material: 316 Grade Stainless Steel; ideal for exposure to chemical cleaning agents
- Contacts: 2 OSSD Outputs (PNP) + 1 Auxiliary Output (PNP)
- Ingress Protection: IP69K
- Operating Temperature: -25C to +80C
- Connection: Wired or M12 8-pole Quick Connect

Tongue Interlock Safety Switch with OSSD (KM-SS-Z)
The KM-SS-Z combines internal self-monitoring and OSSD outputs with a robust, slimline body for reliable position interlock detection on medium to heavy duty moving guards. The head can be rotated to give 8 actuator entry positions.
- Material: 316 Stainless Steel, Mirror Polished
- Housing/Fixing: 118mm Long Body with 30mm Fixing
- Contacts: 2 OSSD Outputs (PNP) + 1 Auxiliary Output (PNP)
- Connection: Wired or M12 Quick Connect
NOTE: Replaceable contact blocks.