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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Specification |
| Model Number | 5KH39QNA002B |
| NEMA Frame Size | 56 Frame (5/8 in. keyed shaft diameter) |
| Phase / Current | Single-Phase AC |
| Supply Voltage | 115 / 230 V AC dual voltage (or 115 V AC standard) |
| Motor Type | Split-Phase or Capacitor-Start (Form KH) |
| Mounting Type | Resilient base (cradle mount) or rigid foot mount |
| Enclosure Type | Drip-Proof (DP) or Totally Enclosed Fan-Cooled (TEFC) |
| Thermal Protection | Automatic reset thermal protector |
Product Introduction & Supply Chain Strategy
The General Electric 5KH39QNA002B is a NEMA 56 frame fractional horsepower AC motor engineered for industrial air-handling, direct-drive blowers, commercial pumps, and general-purpose power applications. It delivers reliable starting torque and continuous-duty operation within commercial building systems and industrial process skids.
Procuring this motor as New Surplus allows facility engineers to replace failed drive units instantly, avoiding extended lead times for specialized motor configurations. Choosing genuine New Surplus over high-risk refurbished units eliminates worn sleeve/ball bearings, degraded winding insulation, and pitted centrifugal switches, keeping critical ventilation and pumping systems operational while lowering Total Cost of Ownership (TCO).
5KH39QNA002B
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Disconnect main AC power supply to the motor branch circuit and execute LOTO procedures on the local disconnect switch.
- Verify zero line voltage at the terminal box using a calibrated multimeter.
- Record wire color connections and line voltage jumpers (115 V vs. 230 V wiring setup) inside the original motor conduit box.
Stage 2: Removal
- Loosen the shaft coupling or belt pulley set-screws and slide the driven component off the shaft.
- Remove the conduit box cover, disconnect incoming power leads, and unthread the flex conduit connector.
- Unbolt the motor base mounting fasteners and lift the motor clear from the mounting cradle or frame.
Stage 3: Installation (Clone & Seat)
- Verify that the terminal wiring jumpers on the new 5KH39QNA002B match the target line voltage requirement (115 V or 230 V).
- Mount the motor onto the base frame, align sheaves or couplings with a straightedge to ensure zero angular offset, and tighten mounting bolts.
- Reconnect power leads using wire nuts or screw terminals, securing the grounding conductor to the green chassis lug.
Stage 4: Power-On & Testing
- Energize the line circuit briefly (bump test) to check shaft rotation direction.
- If rotation must be reversed, swap the internal lead connections (typically leads T5 and T8) per the wiring diagram on the motor nameplate prior to full continuous operation.
Firmware/Software Versions & Upgrade Notes
- Voltage Selection: Ensure the internal connection jumpers match your incoming line voltage before applying power. Applying 230 V to a motor wired for 115 V will immediately burn out the stator windings.
- Rotation Reversal: Single-phase motors utilize an internal centrifugal start-switch. Rotation reversal must be set via terminal wiring while the motor is stopped; swapping line leads externally will not change rotation direction.
- Mechanical Care: Do not hammer couplings or pulleys onto the shaft. Direct end-thrust impact will damage the internal thrust washers and ball bearings.
Frequently Asked Questions (FAQ)
Q: Is this GE 5KH39QNA002B motor brand new?
A: Yes. This unit is 100% New Surplus / Original New stock. It has never been installed in an HVAC system, mounted on an OEM machinery skid, or rebuilt.
Q: Why buy New Surplus instead of a refurbished or re-wound motor?
A: Re-wound fractional motors often lose efficiency due to altered wire turns and thermal core degradation during stripping. Refurbished units also carry fatigued start switches. New Surplus guarantees factory-original efficiency, pristine bearings, and 100% rated starting torque.
Q: How is this legacy motor verified prior to dispatch?
A: Every 5KH39QNA002B motor undergoes winding resistance verification, megger insulation testing, shaft rotation check, and physical frame inspection prior to ESD-safe, shock-resistant packaging.
Q: Can I replace a rigid-base motor with this resilient-base model?
A: Yes, provided the NEMA 56 center height, shaft diameter (5/8 in.), and mounting hole footprint match your drive assembly. Resilient (cradle) mounts also provide superior vibration dampening for fan and blower setups.
Q: What warranty coverage applies to this item?
A: We provide a full 1-year replacement warranty on all New Surplus inventory. If any functional defect arises under standard operating conditions, we supply an immediate direct replacement or process a full credit.
