Allen Bradley 440R-W23221




The Allen Bradley 440R-W23221 is a Guardmaster MSR330P safety relay designed for modular monitoring applications. This Group 1 safety relay features three normally open (NO) and one normally closed (NC) auxiliary contact, operating at 24 VDC with a power consumption of just 1.5 watts. Its compact design allows for easy DIN rail mounting, making it a reliable choice for integrating safety functions in automated systems. Products like this are available through BSP Automation, providing effective solutions for safety monitoring in industrial environments.
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