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

Guard Locking RFID Safety Switch with OSSD and Hygienic Design (MLZ)

The MLZ is a compact 30mm-wide hygienic safety locking switch housed in mirror polished 316 stainless steel. It features versatile mounting with 3 RFID coded entry points and OSSD outputs for series connection. The device’s super-compact design means it is compatible with the narrowest of machine guard rails and requires no mounting plate, making it simple to install and maintain.


  • Mirror Polished 316 Stainless Steel
  • IP67 and IP69K Tested
  • Suitable for SIP and CIP Cleaning
  • Flexible RFID Coded Actuator
  • Actuator Entry from 3-Positions
  • Connects up to 30 Units – CAT4, SIL3, PLe
  • Compact Design: 30mm x 30mm x 133mm
PART NO. DESCRIPTION SAFETY AUXILIARY CONNECTION
470001 MLZ 24Vdc RFID Locking Switch 5m Cable 2 OSSD 1 5M Pre-Wired
470002 MLZ 24Vdc RFID Locking Switch 10m Cable 2 OSSD 1 10M Pre-Wired
470004 MLZ 24Vdc RFID Locking Switch 15m Cable 2 OSSD 1 15M Pre-Wired
470005 MLZ 24Vdc RFID Locking Switch 20m Cable 2 OSSD 1 20M Pre-Wired
470003 MLZ 24Vdc RFID Locking Switch QC-M12 8-PIN 2 OSSD 1 8-PIN QC-M12
470103 MLZ 24Vdc RFID Locking Switch QC-M12 5-PIN 2 OSSD 1 5-PIN QC-M12

Technical Data
ApprovalsTUV (pending), cULus
Classification and Coding Level according to EN ISO 14119Type 4, High
TechnologyRFID, Power to Unlock
Housing Material 316 Grade Stainless Steel
Supply Voltage24Vdc (+/- 10%) SELV/PELV or Class 2
Power ConsumptionR+ (50mA Max.) / S+ (500mA Max.) (Solenoid)
Outputs Rated Voltage24 Vdc
Outputs Max. Current0.1 A
Outputs Min. Current1 mA
Outputs TypeOSSD, PNP
Inputs Rated Voltage24 Vdc
Inputs Rated Current2 mA
Dielectric Withstand250V.ac
Insulation Resistance100 Mohms
Holding Force (ISO14119)F1Max: 4000N Fzh: 3077N
Adjustable Spring Ball CatchAdjustable 30 – 100N. (Light latch)
Coding level (ISO14119)Type 4 High
Assured Locking distance6mm
Sao / Sar (RFID)10mm / 20mm
Response Time Guard Open60ms max.
Response Time Inputs Off20ms max.
Actuator entry minimum radius175mm
Enclosure ProtectionIP67, IP69K (QC version is IP67 at the connector)
Operating Temperature-25 ... +55 °C
Mechanical Life Expectancy (B10d)2.5 x 10 6 cycles at 100mA load
VibrationIEC68-2-6, 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. Maximum output 24V.dc 100mA.