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Bulletin 440R MSR310P Configurable Safety Relays

MSR310P Configurable Safety Relays

The Guardmaster® MSR310P is a base unit for the MSR300 system. You can combine it with other modules of the MSR300 Series to configure a safety control system with numbers of inputs and outputs, as well as diagnostic and networking capabilities. Up to ten input modules and six output modules can be connected to one base unit. A system can support up to 20 inputs devices and 18 normally open outputs. Note that Guardmaster Safety Relays have been marketed by Rockwell Automation under the trade name "Minotaur" in the past.

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  • Category 4 per EN 954-1
  • SIL3 per IEC 61508
  • EN 574 Type IIIC
  • Stop category 0
  • Pulsed input monitoring
  • Three auxiliary group outputs
  • Six diagnostic status indicators
  • Manual, monitored or automatic reset
  • Controls up to three zones
  • RS232 Diagnostic Comms
  • Unidirectional RS232, 4800 baud
  • Bidirectional RS232, 2400, 4800, 9600, 19200 baud
  • Removable terminals


  • MSR310P Configurable Safety Relay Base Modules


  • CE Marked for all applicable directives, cULus, C-Tick, and 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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MSR300 Modular Safety Relay System Product ProfileMSR300-PP002
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