Allen-Bradley MSR310P (440R-W23219) Complete Guide, Specs & Uses
Introduction — What is the MSR310P (440R-W23219)?
The Allen-Bradley MSR310P (catalog number 440R-W23219) is a modular safety relay base from Rockwell Automation designed for flexible, multi-zone safety control in industrial machines and processes. It belongs to the MSR300 family (sometimes referenced under Guardmaster/Minotaur literature) and is typically used as a base module that can be combined with input and output extension modules to create a safety system tailored to an application’s needs.
Key features (at a glance)
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Modular base unit — combine with input/output modules for scalable safety architectures. inav.com.ua
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Supply voltage: 24 V DC (base unit powered at 24 V DC). stateelectric.com
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Auxiliary outputs: 3 x N.O. PNP solid-state auxiliary outputs (typical configuration for 440R-W23219). kirbyrisk.com
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Safety outputs (base): 0 dedicated safety outputs on the base (safety outputs provided by separate output modules depending on configuration). IQElectro
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Reset modes: Auto, Manual, or Monitored Manual reset options available. NHP New Zealand
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Removable terminals and compact 35 mm housing for DIN-rail mounting. NHP Australia
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CAT 4 / PL e capability when configured correctly with matching modules — for high integrity safety applications.
Catalog number: 440R-W23219 (MSR310P). prdsccdnstorage.blob.core.windows.net
Power supply: 24 V DC (SELV). stateelectric.com
Base outputs: 0 dedicated safety outputs on the base; 3 N.O. PNP auxiliary solid-state outputs for status/auxiliary signals. kirbyrisk.com+1
Dimensions: Width 35 mm, Height ~99 mm, Depth ~114.5 mm; weight ~0.21 kg. NHP Australia
Mounting: DIN-rail (35 mm) with removable screw terminal blocks. NHP New Zealand
Performance level / Safety rating: Capable of achieving Performance Level e / Category 4 per EN ISO 13849-1 when used in approved configurations. NHP New Zealand
Interfaces: RS-232 on some variants (for diagnostics / communication with expansion/monitoring modules). kirbyrisk.com
Operating temperature: typically −5 °C to +55 °C (check printed datasheet for exact range). NHP Australia
Certifications: CE, UL/CSA recognition often listed by distributors — verify certificate markings on the unit/datasheet for your region.