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

Guardian Line Heavy Duty Safety Rope Pull Switches (GLHR)

The GLHR heavy duty safety rope pull switch has been designed to protect long conveyor lengths, where protection is required up to 125m (using 2 switches) or up to 100m (using 1 switch). The GLHR can be used on its own or in combination with the GLHD to connect up to 125m rope span from the right side.


  • Body Material: Die-Cast Metal; Painted Yellow
  • Ingress Protection: IP67
  • Contacts: 4NC + 2NO
  • Cable Length (1 Switch): 100m right
  • Cable Length (2 Switches): 125m right
Part No. Part Description
141036 GLHR ½NPT 4NC 2NO E stop
141036-FZ GLHR ½NPT 4NC 2NO E stop
141038 GLHR M20 4NC 2NO
141038-FZ GLHR M20 4NC 2NO
141038-QCM12 GLHR QC M12 4NC 2NO
141038-QCM23 GLHR QC M23 4NC 2NO
141052 GLHR M20 4NC 2NO E stop
141052-FZ GLHR M20 4NC 2NO E stop
141052-QCM12 GLHR QC M12 4NC 2NO E stop
141052-QCM23 GLHR QC M23 4NC 2NO E stop
141058 GLHR ½NPT 4NC 2NO
141058-FZ GLHR ½NPT 4NC 2NO

Note
FZ models for temperatures down to -40°C.

Technical Data
ApprovalsTUV, cULus
TechnologySafety Rope Pull Switch
Housing Material Yellow Painted Die-Cast Metal
Operating Temperature-25 ... +80 °C (-40C. for -FZ versions)
Enclosure ProtectionIP67
Rope Spans Up to 125m
Rope Type4.0mm Outside Dia. Steel inner-PVC sheath
Mounting4 x M5
Torque settingsMounting M5 4.0 Nm Lid T20 Torx M4 1.5 Nm Terminals 1.0 Nm
Vibration resistance10-500Hz 0.35mm
Shock resistance15g 11ms
Tension Force (typical mid setting)130N
Typical Operating Force (Rope pulled)< 125N. < 300mm Deflection
Safety Contact typeIEC 60947-5-1 Double break Type Zb
TerminationClamp up to 2.5 sq. mm conductors
Rating Utilisation Category : AC15
Operational RatingAC15 A300 240V. 3A /120V 6A. ac 24V. 2.5A dc inductive
Thermal Current (Ith)10A
Rated Insulation Voltage (Ui)500V
Withstand Voltage (Uimp)2500V
Short Circuit Overload ProtectionFuse Externally 10A. (FF)

Safety Classification and Reliability Data
Mechanical Reliability B10d1.5 x 10 6 operations at 100mA load
ISO 13849-1up to Category 4 with Safety Relay
ISO 13849-1up to PLe depending upon system architecture
EN 62061up to SIL3 depending upon system architecture
Safety Data - Annual Usage8 cycles per hour / 24 hours per day / 365 days MTTFd 214 years

Information with regard to UL 508
Type 1 Enclosures. Temperature rating 80C. Use 16 - 12AWG copper conductors, rated 75ºC only. Intended for same polarity use and one polymeric conduit connection. Electrical Rating: A300 240V.ac 3A. (6,000 cycles) 120V. 60A. Making 6A. Breaking PF >0.38 (100,000 cycles) 240V. 10A. carry only. Wire range: 16AWG – 12AWG Copper Torque 7lb/in (0.8Nm) LED powered by LVLC or Class 2 only. Earth bonding terminal inside enclosure if required.