Product Support & Resources

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