Two new Allen-Bradley safety relays from Rockwell Automation deliver high-performance protection while helping OEMs reduce installation time and costs.

Offering broad application versatility and a modular, easily expandable design, the new MSR142RTP and MSR144RTP relays are the latest additions to the Allen-Bradley Guardmaster family of safety relays.

“Traditionally, users have had to choose between safety and flexibility,” says Kevin Zomchek, product manager, Rockwell Automation. “These safety relays – with their modular design and reliable performance – put to rest this assumption.”

Featuring seven safety outputs, four auxiliary outputs and two solid-state auxiliary outputs, the MSR142RTP multi-output relay meets a variety of application requirements, including safety switches, light curtains and safety mats. The MSR142RTP is housed in a 67.5mm-wide DIN-rail mount with removable terminals and accepts both solid-state and electromechanical inputs. It is also is equipped with automatic or monitored manual reset capabilities.

“The MSR142 helps users reduce installation costs and conserve cabinet space by allowing them to switch up to seven outputs without having to buy additional expansion modules,” says Zomchek.

The second new relay, the MSR144RTP, can be connected in four different input wiring configurations and is easily expanded via a ribbon connector from the dedicated expansion modules. Up to five modules can be connected together in any combination of immediate or delayed-output modules. The relay allows users to switch several safety circuits or different voltages with one emergency stop command.

The MSR144RTP safety relay, when combined with plug-in output expansion modules, is suitable for complex applications where flexibility and a high number of output contacts are required.

In addition to reducing installation costs and wiring complexity, the MSR144RTP helps to simplify inventory, as its modular design can be applied to meet a broad range of equipment specifications and application demands. With removable coded terminals and extended LED diagnostics, the relay not only provides a high level of safety, but also helps to reduce service and maintenance costs. 

For more information, visit www.ra.rockwell.com