Potterton
Potterton Fuse 5mm x 20mm 4A 250V 5142490
5mm x 20mm 4A 250V fuse, Potterton part number 5142490, used on Potterton Commercial Sirius 2 and Sirius 3 boilers.
£4.56
£3.80 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Potterton 5142490 is a 5mm x 20mm fuse rated at 4A and 250V. It is a control-circuit fuse listed for Potterton Commercial Sirius 2 and Sirius 3 boiler appliances. The fuse protects the boiler's electrical circuit, and a blown fuse will interrupt the supply to the appliance.
Before you order
- Confirm the existing fuse is a 5mm x 20mm type before ordering.
- Check the current and voltage ratings on the failed fuse match 4A and 250V.
- Verify the appliance model against the fit list above, as ratings vary between boards.
- Isolate the electrical supply to the boiler before removing or fitting any fuse.
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| POTTERTON COMMERCIAL POTTERTON COMMERCIAL SPARES | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 FS110 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 FS50 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 FS70 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 FS90 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 3 FS110 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 3 FS50 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 3 FS70 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 3 FS90 | — | — | — |
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.