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

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.

Part NumberPart DescriptionSafety ChannelsAuxiliaryConnection
204300-ZKM-SS 2NC 1NO QC-M12 8way OSSD2 OSSD PNP1 PNP250mm Pigtail 8way M12 Quick Connect
204300A-ZKM-SS 2NC 1NO QC-M12 8way OSSD with Std Actuator2 OSSD PNP1 PNP250mm Pigtail 8way M12 Quick Connect

Technical Data
CertificatescULus (TUV on Internal Contact Block)
TechnologyTongue Interlock (Non Locking)
Housing Material316 Grade Stainless Steel
IP RatingIP67, IP69K (QC versions IP67 on connector)
Contact Configuration2 OSSD PNP + 1 PNP Auxiliary
Rated Operating Voltage24V DC -15% +10% (Use SELV/PELV)
Power Consumption0.7W
Outputs Rated Voltage24V DC
Outputs max. / min.Current0.2 A / 1mA
Inputs Rated Voltage / Current24V DC / 2mA
Auxiliary Signalling Output Rated Voltage24V DC
Auxiliary Signalling Output Max. Current0.2 A PNP
Response Time Guard Open60ms max.
Response Time Inputs Off20ms max.
Operating Temperature-20 ... +50 °C

Characteristic Data according to IEC62061 (used as a sub system)
Safety Integrity LevelSIL3
PFH (1/h)1.0 E-09 (Corresponds to 1% of SIL3)
PFD8.8 E-05 (Corresponds to 9% of SIL3)
Proof Test Interval T120a

Characteristic Data according to EN ISO13849-1
Performance Levele
Category4
MTTFd771a
Diagnostic Coverage DCHigh

Information with regard to U.L. Standards
EnclosureType 1
Maximum temperature+50 °C
Maximum output24V DC 100mA
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