Allen-Bradley 440R-S845AER-NNL

The 440R-S845AER-NNL, a Guardmaster MSR57P Speed Monitoring Safety Relay from Allen-Bradley, is expertly engineered for motion applications that necessitate personnel interaction. This safety relay excels in standstill detection for both single and three-phase motors, eliminating the need for sensors, which simplifies setup and maintenance. With an input current of 11 mA and robust short-circuit protection features, the MSR57P ensures secure operation in demanding environments. It operates effectively within a temperature range of -5°C to 55°C and accommodates relative humidity levels up to 90%. Designed for resilience, it withstands vibrations and shocks, making it ideal for industrial applications. This reliable relay enhances machine safety by continuously monitoring motor speed and preventing potential hazards, ensuring the utmost protection for personnel during operation.