Century 5KCP39MGDD728S / A.O. Smith FDL6001A Direct-Drive Blower Motor, 1/2–1/6 HP range, 115V PSC, 1075 RPM, 4-Speed, Reversible, 48Y Frame, Sleeve Bearing, OAO, 1/2″ shaft flat

Condition: New, open box. No prior field use. Capacitor and mounting bracket are not included.

Overview

The Century 5KCP39MGDD728S (also labeled A.O. Smith FDL6001A) is a multi-speed, permanent split capacitor (PSC) blower motor for residential/light-commercial HVAC. With a 1/2 HP max (tapped down to 1/6 HP) output across 4 speed taps, 115 VAC operation, and 1075 RPM nominal speed, it’s a versatile 48Y frame drop-in for many furnaces, fan-coils, and air handlers that need selectable airflow for cooling (high) and heating (med/low) modes. The sleeve-bearing design provides quiet running when mounted correctly with a belly-band strap (not included). Motor is reversible for CCWSE/CWLE rotation via lead change and is intended for Air-Over (OAO) duty in blower housings.

Ready for pro installs: match HP/Volts/RPM/Frame, shaft size/length, rotation, and capacitance to your unit data plate. Wire per the schematic on the motor can.

Features

• 1/2–1/6 HP across 4 speed taps for precise airflow setup

• PSC efficiency with smooth, quiet operation in air-over applications

• Reversible rotation via leads for CCWSE or CWLE as required

• 48Y frame, OAO enclosure, sleeve bearings for low sound

• 1/2″ diameter shaft with flat for secure blower wheel set-screw clamping

• Class B insulation, 40 °C ambient, 60 Hz, single-phase

• Service-friendly lead set with standard color coding (verify on label)

Specifications (as provided)

• Model Numbers: Century 5KCP39MGDD728S / A.O. Smith FDL6001A

• Horsepower: 1/2 HP max (tap range 1/2 → 1/6 HP)

• Voltage / Frequency: 115 VAC, 60 Hz

• Full-Load Amps: ~7.0 A (typical for 1/2 HP PSC in this family)

• Speed: 1075 RPM nominal

• Speeds: 4 (multi-speed)

• Phase: 1 (single-phase)

• Frame: 48Y (5.6″ dia) — belly-band mount (not included)

• Enclosure: Open Air-Over (OAO)

• Bearing Type: Sleeve

• Rotation: Reversible — CCWSE/CWLE (via lead change)

• Shaft: 1/2″ dia, flat; typical length per label (verify wheel overhang)

• Capacitor Required: 10 µF @ 370 VAC (not included)

• Duty Type: Air-Over

• Insulation Class: B

• Ambient Limit: 40 °C

• Approx. Weight / Size: ~16 lb; ~13.5″ × 6.5″ × 6.5″ overall

Important rotation note: State rotation from the Shaft End (SE). Wire for CCWSE or CWLE as your blower housing requires. Use “CCWSE/CWLE” notation on install tickets.

Applications / Spheres of Application

• Residential forced-air furnaces (indoor blowers)

• Air handlers & fan-coil units (split systems & package rooftops)

• Multi-speed airflow setups for cooling/heating balance and static-pressure tuning

• Field replacements where original was 1/2 HP, 115V, 1075 RPM, 48Y PSC

Pros & Cons

Pros

• Wide compatibility thanks to 4-speed taps and 48Y frame

• Quiet sleeve bearings when mounted and aligned properly

• Reversible rotation for flexible fit-up

• PSC simplicity (common parts, straightforward wiring)

Cons

• Capacitor & belly-band not included (required for install)

• Sleeve bearings are orientation-sensitive; ensure correct belly-band support and level mount

Cross-Referenced / Compatible Part Numbers

• Century: 5KCP39MGDD728S, 5KCP39MGDD-728S

• A.O. Smith: FDL6001A

• MARS: 10487

• Rotom: R43787

• U.S. Motors: 5462

Always confirm shaft dimensions, rotation, HP/amps, mounting, and capacitor value before substituting.

NBK Parts — Commonly Used Equivalents (include when sourcing)

• NBK Parts 48Y 1/2 HP 115V 1075 RPM PSC, reversible (sleeve bearing) — spec-matched replacement class (exact NBK P/N varies by lead length/shaft; match 1/2″ shaft, 10 µF cap, OAO, CCWSE/CWLE).

• NBK Parts 4-speed 1075 RPM PSC universal 48Y (1/2 HP max) — verify rotation and mounting.
  (Ask us for NBK Parts ordering codes based on your required shaft length and lead set.)

Comparable Motors (same duty class — verify details)

• Genteq / GE 5KCP39 “1076” family (1/2 HP, 115V, 1075 RPM, 4-spd, 48Y)

• US Motors 2056 / 5462 (1/2 HP, 115V, 1075 RPM PSC)

• Century FSE1056 (1/2 HP, 115V, 4-spd PSC)

• Packard PFM1056 (1/2 HP, 115V, 48 frame PSC)

• MARS 10585/10763 family (spec-match variants)

Installation Notes & Best Practices

• Use a new 10 µF / 370 VAC run capacitor; never reuse an unknown cap.

• Mount with a 48Y belly-band; keep motor level and center the blower wheel on the shaft; tighten set-screw on the shaft flat.

• Set cooling on High (Black), heat on Med/Low as per OEM airflow chart; verify temperature rise and ESP after install.

• Check amp draw on each speed tap; compare with nameplate.

• Balance/clean the blower wheel; replace if out-of-round or cracked.

• Confirm rotation (airflow direction) after wiring; swap leads to reverse if needed.

• Ensure proper air-over cooling—do not run the motor outside the blower housing.

What’s Included

• Century 5KCP39MGDD728S / A.O. Smith FDL6001A motor (new open box)

• Factory lead set (as packed)

Not Included

• Run capacitor (10 µF/370 VAC)

• Belly-band mounting strap / brackets

• Pulley (not used on direct-drive), wiring adapters, installation hardware

Related

1/2 hp 115v 1075 rpm blower motor; device to move air in furnace/air handler; 48Y PSC multi-speed motor; reversible CCWSE/CWLE blower motor; sleeve-bearing HVAC motor; Century 5KCP39MGDD728S replacement; A.O. Smith FDL6001A fan motor; 4-speed furnace blower; air-over PSC motor; universal 48-frame blower motor; 10 mfd 370v capacitor motor; NBK Parts 48Y PSC equivalent

Common Requests:

1. “Is it compatible with my 115V furnace (1/2 HP, 1075 RPM)?”

2. “Does it include the 10 µF capacitor and belly-band?” (No—both required to purchase separately.)

3. “How do I reverse rotation to CCWSE/CWLE?” (Swap the designated reversing leads per schematic.)

4. “Which speed tap for cooling vs heating?” (Typically High for cool; Med/Low for heat—verify OEM airflow chart.)

5. “What’s the shaft size/length and will it fit my blower wheel?” (1/2″ dia with flat; measure your required insertion depth.)

Manufacturer and product names, including Century®, A.O. Smith®, Emerson®, MARS®, Rotom®, U.S. Motors®, Genteq®, and NBK Parts™ are trademarks of their respective owners. Names are used solely to identify compatibility and specifications and do not imply endorsement or affiliation.

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