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The Allen-Bradley 1771-P4S1 Power Supply Module is engineered to provide vital AC power to the backplane of the 1771 I/O chassis, conveniently occupying a single slot. Operating with a nominal input voltage of 120V AC and handling an input current of 0.88 Amperes, it efficiently delivers an output of 5.06V DC at up to 8 Amperes, while maintaining stable performance within a frequency range of 47-63Hz. Designed with robust isolation capabilities, it features a tested 2160V DC isolation and branch circuit protection up to 15A, accommodating a copper conductor of 14 AWG. Its design includes a standard open-style enclosure, weighs approximately 1.04 kg, and adheres to UL and CSA certifications, ensuring reliability in diverse industrial applications.