Potterton
Potterton Terminal Block 2-12 PA27 5138689
Terminal block 2-12 (PA27), part 5138689, for Potterton Commercial Sirius 2, Sirius 3 and Sirius FS boilers.
£7.68
£6.40 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 Terminal Block 2-12 (PA27), part 5138689, is a terminal board used on Potterton Commercial Sirius boilers. It provides the screw-terminal connection point for the boiler wiring, forming part of the appliance's electrical control circuit. The part is supplied for Potterton Commercial Sirius 2, Sirius 3 and Sirius FS models.
Signs this part needs replacing
- Terminals that are loose, cracked or no longer grip the conductor securely
- Visible scorching, discolouration or melted plastic around the terminal positions
- Overheating or a burnt smell traced to the boiler wiring connections
- Intermittent electrical faults on the boiler that clear when the wiring is disturbed
- Corrosion or verdigris on the terminal screws or contact plates
Before you order
- Confirm the appliance model and, for Sirius 2 Wh50, Wh60 and Wh70, that the boiler is a from-April-2016 build
- Check the existing terminal block marking against 2-12 (PA27) and part 5138689
- Inspect the wiring harness and individual conductors for heat damage before refitting, as damaged wiring can affect the new block
- Isolate the electrical supply to the boiler and follow the manufacturer's wiring diagram when replacing the part
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| POTTERTON COMMERCIAL POTTERTON COMMERCIAL SPARES | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 WH50 (FROM APRIL 2016) | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 WH60 (FROM APRIL 2016) | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 2 WH70 (FROM APRIL 2016) | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 3 WH110 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 3 WH130 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 3 WH150 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 3 WH50 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 3 WH60 | — | — | — | |
| POTTERTON COMMERCIAL SIRIUS 3 WH70 | — | — | — |
Showing 10 of 16 compatible appliances.
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.
POTTERTON COMMERCIAL appliance manual — SIRIUS 2 WH50 (FROM APRIL 2016), SIRIUS 2 WH60 (FROM APRIL 2016), SIRIUS 2 WH70 (FROM APRIL 2016)
manualmanualPOTTERTON COMMERCIAL appliance manual — SIRIUS 3 WH110, SIRIUS 3 WH90
manualmanualPOTTERTON COMMERCIAL appliance manual — SIRIUS 3 WH130, SIRIUS 3 WH150
manualmanualPOTTERTON COMMERCIAL appliance manual — SIRIUS 3 WH50, SIRIUS 3 WH60, SIRIUS 3 WH70
manualmanualPOTTERTON COMMERCIAL appliance manual — SIRIUS FS 50-70
manualmanualPOTTERTON COMMERCIAL appliance manual — SIRIUS FS 90-105
manualmanualPOTTERTON COMMERCIAL appliance manual — SIRIUS SAT R/1, SIRIUS SAT RP/1
manualmanualPOTTERTON COMMERCIAL appliance manual — SIRIUS SAT RST
manualNo technical questions yet for this part.
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