Century 4MA70 Blower Motor

The Century 4MA70 Direct-Drive Blower Motor is a 1/2-horsepower, single-phase PSC blower designed for open-air-over mounting with a ring bracket. It delivers 1,075 RPM and offers three-speed operation, commonly used in 48Y-frame HVAC blowers for furnaces and air handlers. Catalog variants include 120 V (120/1/60) and 230 V (208-230/1/60) versions, making it compatible with typical US residential power configurations. The motor uses a run capacitor (approximately 10 µF) to support start/run performance and is a direct-drive, sleeve-bearing unit within Century’s motor family. In HVAC replacement scenarios, the 4MA70 accommodates applications requiring a 1/2 HP, 1,075 RPM PSC motor with Open Air-Over mounting and ring mounting for straightforward installation.