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Bulletin 440R MSR7R and MSR7C Control Monitoring Safety Relays

MSR7R/7C Two-Hand Control Monitoring Relays

The Guardmaster® MSR7R and MSR7C are logic units for monitoring and interfacing two-hand control devices with a safety-related circuit. The MSR7R is compatible with mechanical switches and the Allen-Bradley® Bulletin 800Z Zero-Force Touch Buttons™. Note that Guardmaster Safety Relays have been marketed by Rockwell Automation under the trade name "Minotaur" in the past.

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  • Safety category 3 per EN 954-1
  • Safety category IIIb per EN 574
  • Two-hand control unit
  • Three N.O. safety outputs
  • One N.C. auxiliary output
  • 45 mm wide housing


  • MSR7R Two-Hand Control Monitoring Relays compatible with mechanical switches and Bulletin 700Z Zero-force Touch Buttons™
  • MSR7C Two-Hand Control Monitoring Relays compatible with capacitive or photoelectric switches


  • CE Marked for all applicable directives, C-Tick, cULus & TÜV

Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details.

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MSR7C Safety Relay Installation InstructionsMINOTR-IN004
MSR7R Safety Relay Installation InstructionsMINOTR-IN005
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