Should You Rewind or Replace a Burnt Electric Motor?
Quick answer: Rewinding replaces the burnt copper windings and is often worthwhile for larger motors with a sound frame, core and shaft. For small motors, a new one can cost little more and comes with a warranty, so replacement is often better. Either way, find out why it burned, or the new winding will fail too.
Key facts
- Rewind larger motors with a sound core and shaft
- Small motors: replacement is often better value
- Find the cause: overload, single phasing, low voltage, water
- Protect with overload and phase-failure relays
On this page
Rewind or Replace?
| Rewind when | Replace when |
|---|---|
| The motor is large or special | It is small and a new one costs little more |
| Frame, core and shaft are sound | The core is damaged or the shaft is bent |
| A new motor has a long lead time | It has burned repeatedly |
| A trusted workshop can rewind to the original specification | You want a warranty and known performance |
Why Motors Burn
- Overload: a pump or machine working harder than the motor's rating.
- Single phasing: one phase lost on a three-phase motor.
- Low or unstable voltage, and undersized cable.
- Water or dust getting into the windings.
- Worn bearings making the rotor drag.
Protect Your Motor
- Fit a correctly set overload relay and, on three-phase motors, phase-failure protection.
- Use the right cable size for the distance.
- Keep motors dry and ventilated; replace bearings when noisy.
- Match the motor size to the load.
New Electric Motors
POWER-UK ELECTRIC MOTOR 2HP (High speed)KSh 21,000
POWER-UK ELECTRIC MOTOR 3HP (High speed)KSh 24,000
POWER-UK ELECTRIC MOTOR 7.5HP (High speed)KSh 39,000
POWER-UK ELECTRIC MOTOR 10HP (Low speed)KSh 45,000| Product | Price |
|---|---|
| POWER-UK ELECTRIC MOTOR 2HP (High speed) | KSh 21,000 |
| POWER-UK ELECTRIC MOTOR 3HP (High speed) | KSh 24,000 |
| POWER-UK ELECTRIC MOTOR 7.5HP (High speed) | KSh 39,000 |
| POWER-UK ELECTRIC MOTOR 10HP (Low speed) | KSh 45,000 |
Current listed prices incl. VAT (updated 4 October 2026).
Sizing by horsepower: electric motor HP guide. Pump faults: pump troubleshooting.
Frequently asked questions
Is it cheaper to rewind or replace a motor?
Rewinding is often cheaper for large motors; for small motors a new one is often better value.
Why do electric motors burn out?
Overload, single phasing, low voltage, undersized cable, water or dust, and worn bearings.
Does rewinding reduce motor efficiency?
A poor rewind can; use a trusted workshop that rewinds to the original specification.
How do I protect a motor from burning?
Use a correctly set overload relay, phase-failure protection, the right cable size, and keep it dry.