Safety relays

With multi-output capabilities, the MSR142RTP and MSR144RTP relays are designed to meet a variety of safety application requirements, including those incorporating safety interlock switches, E-stops, light curtains and safety mats.

Featuring seven safety outputs, four auxiliary outputs and two solid-state auxiliary outputs, the Allen-Bradley Guardmaster MSR142RTP helps users reduce installation costs and conserve cabinet space through not having to purchase additional expansion modules.

For more complex applications where flexibility and a higher number of output contacts are required, the modular MSR144RTP relay is easily expanded via a ribbon connector from the dedicated plug-in expansion modules. Up to five output expansion modules can be connected together in any combination of immediate (MSR230) or delayed (MSR238) output modules, supporting up to 22 safety output contacts in total. In addition to reducing installation costs and wiring complexity, the relay helps simplify inventory, as its modular design can be applied to meet a broad range of equipment specifications and application demands.

The relay can be connected in four different input wiring configurations and allows users to switch several safety circuits or different voltages with one E-stop command.

The relays also feature removable coded terminals, two solid-state auxiliary outputs, both solid-state and electromechanical inputs, and are equipped with automatic or monitored manual reset capabilities and comprehensive LED diagnostics. These relays not only provide a high level of safety protection, but also help reduce service and maintenance costs.