Guard Locking RFID Safety Switch with Control Functionality, Trapped Key and Rear Release (KLM-Z-SKR-5ST-RR)

The KLM-Z-SKR-5ST-RR is a Type 4 guard locking RFID safety switch with OSSD outputs, integrated machine control functionality, and a coded trapped personnel key.

Designed for applications where guard locking, local machine control, and controlled access are required in one compact device, the KLM-Z-SKR-5ST-RR can incorporate up to five 22mm control elements. This helps reduce the number of separate devices required at the gate, simplifies wiring, and provides operators with convenient control directly at the access point.

The coded personnel key is designed to be removed and taken into the guarded area by the operator or maintenance personnel. While the key is removed, the safety circuit cannot be reset, helping to prevent inadvertent machine start-up while work is being carried out inside the safeguarded area.

The slim profile body mounts directly to 50mm frame sections, making it ideal for machine guarding applications where space is limited. The actuator head allows both front and end entry and can be rotated to provide up to eight actuation directions, offering excellent flexibility during installation.


  • Type 4, High Coded RFID Sensing
  • 3000N Holding Force
  • OSSD Outputs for Series Connection
  • Up to 5 Positions for Pilot Devices
  • Robust Metal Body and Stainless Steel Head
  • Mechanical Rear Release Button

Part No.DescriptionManual ReleaseRear Release (Escape)Connectivity
457014KLM-Z-SKR-5ST-RR M20, Side Release, Rear ReleaseYesYesM20
457015KLM-Z-SKR-5ST-RR 1/2" NPT, Side Release, Rear ReleaseYesYes1/2" NPT
457016KLM-Z-SKR-5ST-RR 8way QC-M12, Side Release, Rear ReleaseYesYes8way QC-M12
457314KLM-Z-SKR-5ST-RR M20, No Manual Release, Rear ReleaseNoYesM20
457315KLM-Z-SKR-5ST-RR 1/2" NPT, No Manual Release, Rear ReleaseNoYes1/2" NPT
457316KLM-Z-SKR-5ST-RR 8way QC-M12, No Manual Release, Rear ReleaseNoYes8way QC-M12

Note
Key sold seperetaly.

Technical Data
ApprovalsTUV, cULus
Classification and Coding Level according to EN ISO 14119Type 4, High
TechnologyRFID, Power to Unlock
Housing MaterialPainted Die-Cast Metal
Head Material316 Grade Stainless Steel
Supply Voltage24Vdc (+/- 10%) SELV/PELV or Class 2
Power ConsumptionR+ (50mA Max.) / S+ (500mA Max.) (Solenoid)
Safety Circuits2 OSSD PNP Outputs (24Vdc 200mA max. switching)
Auxiliary Circuits (34 & 44)24Vdc 200mA max. Output feed
Rated Insulation Voltage500VAC
Rated Impulse withstand1000VAC
Holding Force (ISO14119)F1Max 3000N Fzh 2307N
Actuator insertion for locking5mm
Sao / Sar (RFID)15mm / 25mm
Operating Frequency1Hz
Actuator entry minimum radius175mm
Enclosure ProtectionIP65
Operating Temperature-25 ... +40 °C
Mechanical Life Expectancy (B10d) 2.5 x 10 6 cycles at 100mA load
Vibration IEC68-2-6, 10-55Hz+1Hz Excursion: 0.35mm, 1 octave/min

Characteristic data according to IEC62061 (used as a subsystem)
Safety Integrity LevelSIL 3
PFH (1/h)1.0 E-09 (Corresponds to 1% of SIL3)
PFD (Av.)8.7 E-05 (Corresponds to 9% of SIL3)
Proof Test Interval T120a

Characteristic data according to EN ISO13849-1
Performance Levele
CategoryCat 4
MTTFd771a
Diagnostic Coverage DCHigh

Information with regard to UL Standards
Type 1 enclosure. Use Class 2 power supply or equivalent. Maximum temperature 40°C. Use 16-28AWG copper conductors (rated 90°C). Terminal Torque 6 lb ins. (0.7Nm). Intended for same polarity use. Safety Circuits (11-12 & 21-22) 24V.dc 200mA max. Use one polymeric conduit connection. Not suitable for connection to rigid metal conduit. (Earth bonding terminal inside metal enclosures (if required). Use 16-12AWG conductors)