Reliance Electric FB56C PB9 AC Induction Motor

Reliance Electric FB56C with PB9 blower is a 4-pole AC induction motor in the NEMA FB frame, paired with an external PB9 blower for continuous-duty air movement in HVAC equipment, blower assemblies, and industrial ventilation. The enclosure is typically TEFC / blower-cooled (PB9), with a voltage range of 208–230/460 V, 60 Hz, 3-phase operation, and a speed of approximately 1725 RPM. The shaft diameter is 5/8 inch, and the motor power ranges about 0.33–1 HP depending on configuration. The external PB9 blower provides forced-air cooling to maintain thermal stability under sustained load, supporting industrial ventilation, air handling systems, exhaust blowers, dust collection, and other enclosed machinery requiring reliable cooling during continuous operation.