Description
Generic UV Ballast 20W–40W — 4 Pin Even (T5)
Replace your faulty UV ballast with this reliable generic replacement, compatible with a range of UV steriliser brands. Double insulated for safe operation.
Compatibility
| Fits UV Systems | Notes |
|---|---|
| Aqua-Pro UV systems | 4 Pin Even (T5) |
| Radfire UV systems | 4 Pin Even (T5) |
| UV Guard UV systems | 4 Pin Even (T5) |
| Many other T5 4 Pin Even systems | Check wattage range |
Ballast Specifications
- Brand: Polaris
- Model: EB-2439
- Lamp Wattage Range: 20W – 40W
- Pin Connection Type: T5 — 4 Pin Even
- Double Insulated: Yes
Why Replace a Faulty Ballast?
A failing ballast can cause the UV lamp to flicker, underperform, or fail completely — leaving your water untreated. If your UV system is not disinfecting effectively, the ballast is often the culprit. Always replace with a compatible wattage-rated ballast.
How to Replace Your UV Ballast
- Turn off the UV system and disconnect power
- Turn off the water supply
- Remove the ballast cover
- Disconnect the lamp and power leads from the old ballast
- Install the new ballast and reconnect all leads
- Replace the cover, restore water supply, and power on
- Verify the UV lamp is operating correctly
Matching UV Lamp
Also need a replacement UV lamp? See our replacement lamps collection for compatible options.
Local NZ Stock | Fast Shipping | NZ Customer Support


