Allen-Bradley 440R-G23108 Safety Relay Minotaur

Allen-Bradley 440R-G23108 Minotaur MSR124RT Monitoring Safety Relay is a 115 VAC-powered safety relay module designed to interface with protective devices such as E-stops, light curtains, and safety interlocks to guard machinery. The 440R-G23108 variant supports a 24 VDC control circuit and provides five normally open safety contacts plus one normally closed auxiliary contact, with inputs configurable as 1 NC, 2 NC, or Light Curtain. Housed in a 100 mm-wide enclosure, it delivers two monitored safety outputs for fail-safe signaling and is described in installation literature as offering monitored restart configurations (manual restart) alongside monitored outputs. Common applications include safeguarding machine guards and control panels where reliable, monitored safety signaling is required, enabling door interlock and light-curtain safety circuits to halt operations when a protective device is opened. As part of the Minotaur MSR family, it serves as a direct, compatible safety relay option within Allen-Bradley’s Guardmaster ecosystem, suitable for integration into industrial automation safety architectures that demand clearly defined input types, fail-safe outputs, and a compact form factor.