As a direct Williams furnace replacement part

the motor drives a high-performance blower wheel at speeds up to 3200 RPM

While the operating set point is limited to 50" W

offering flexibility for various control circuits

Aaon ASM08077 Motor Speed Control 326010-701 As a direct Williams furnaceThe AAON ASM08077 motor speed control is a 240V variable speed control module designed for precise regulation of HVAC fan and blower motor performance in AAON rooftop units and air handling systems. Engineered for commercial HVAC applications, this control module helps maintain optimal airflow by adjusting motor speed in response to system demand, improving overall efficiency and system stability. This AAON 240V motor speed controller is commonly used