440R-W23219 | Allen-Bradley MSR310P Modular Safety Relay Base Unit 24V DC

Description 

The Allen-Bradley 440R-W23219 MSR310P is a modular safety relay base unit designed for integration into Category 4 safety systems. Operating on 24 VDC, it features automatic and manual monitored reset modes, RS-232 connectivity, and solid-state auxiliary outputs in a compact 35 mm DIN rail housing.

Technical Specifications 

Information About 440R-W23219

The 440R-W23219 is part of the Guardmaster modular safety relay family and serves as the base unit for MSR300 series modular relay systems. Designed for machine safety applications, it provides flexible safety control architecture while minimizing panel space. Although this model includes no safety outputs, it provides three normally open (N.O.) solid-state auxiliary outputs and can be expanded with additional safety and output modules depending on the safety circuit design. Its monitored automatic/manual reset function supports enhanced operator and system diagnostics. The 35 mm housing width supports efficient DIN rail mounting, and the RS-232 communication port allows configuration or diagnostics when required. 

Key Features:

• Application: Modular safety relay base for configurable safety systems.
• Voltage: Operates at 24 VDC for standard low-voltage industrial environments.
• Output Configuration: 0 safety outputs, 3 N.O. auxiliary solid-state outputs.
• Reset Type: Supports both automatic and manual monitored reset modes.
• Enclosure Size: Compact 35 mm housing for efficient DIN rail mounting.
• Connectivity: Includes RS-232 interface for optional diagnostics/configuration.
• Compliance: Certified to CCC, CE, CUL, and UL standards for global application.
• Functionality: Designed to support expansion modules for complete safety control coverage.

The 440R-W23219 offers a flexible foundation for building scalable, certified safety relay systems in complex automation environments.