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

Guard Locking RFID Safety Switch with Control Functionality (KLM-Z-4ST)

The KLM-Z-4ST incorporates all the safety switch features of the KLM-Z, but with extra machine control functions. The slim profiled body can incorporate up to four standard 22mm push buttons, mounting directly to 50mm frame sections. The head features front and end entry and can be rotated to provide up to 8 actuation directions.

  • Type 4, High Coded RFID Sensing
  • 3000N Holding Force
  • OSSD Outputs for Series Connection
  • Robust Metal Body and Stainless Steel Head


Part No.Part Description
457001AZKLM-Z-4ST M20 (manual release lid and side) – Std Actuator
457001HFZKLM-Z-4ST M20 (manual release lid and side) – Heavy Duty Actuator
457301AZKLM-Z-4ST M20 (no release) – Std Actuator
457301HFZKLM-Z-4ST M20 (no release) – Heavy Duty Actuator
457401AZKLM-Z-4ST M20 (lid only release) – Std Actuator
457401HFZKLM-Z-4ST M20 (lid only release) – Heavy Duty Actuator
457002AZKLM-Z-4ST ½” NPT – Std Actuator
457002HFZKLM-Z-4ST ½” NPT – Heavy Duty Actuator
457402AZKLM-Z-4ST ½” NPT (lid only release) – Std Actuator
457402HFZKLM-Z-4ST ½” NPT (lid only release) – Heavy Duty Actuator

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
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)