Alpha
Alpha 2-Way Terminal Block 1.020503
Alpha 2-way terminal block, part number 1.020503, for wiring connections on Alpha CD and HE series boilers.
£16.39
£13.66 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 Alpha 2-Way Terminal Block is a wiring connector used on Alpha CD and HE series gas boilers. It provides a two-way connection point within the appliance's electrical circuit. The part is identified by Alpha part number 1.020503.
Signs this part needs replacing
- Visible scorching, charring or discolouration around the terminal positions
- Brittle, cracked or broken housing or insulation
- Loose or intermittent connections that will not tighten
- Overheating or arcing marks at the connection points
Before you order
- Confirm the appliance model against the fit list above
- Check the existing terminal block for the number of ways required
- Inspect the wiring and adjacent components for damage before refitting
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA CD12S | 41-532-16 | 41-532-16 | — | — |
| ALPHA CD12S (LPG) | 41-532-17 | 41-532-17 | — | — |
| ALPHA CD18S | 41-532-06 | 41-532-06 | — | — |
| ALPHA CD18S (LPG) | 41-532-13 | 41-532-13 | — | — |
| ALPHA CD20S | 41-532-18 | 41-532-18 | — | — |
| ALPHA CD20S (LPG) | 41-532-19 | 41-532-19 | — | — |
| ALPHA CD24S | 41-532-02 | 41-532-02 | — | — |
| ALPHA CD24S (LPG) | 41-532-15 | 41-532-15 | — | — |
| ALPHA CD28S | 41-532-20 | 41-532-20 | — | — |
| ALPHA CD28S (LPG) | 41-532-21 | 41-532-21 | — | — |
Showing 10 of 14 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.
ALPHA appliance manual — CD12S (GC 41-532-16), CD12S (LPG) (GC 41-532-17), CD20S (GC 41-532-18), CD20S (LPG) (GC 41-532-19), CD28S (GC 41-532-20), CD28S (LPG) (GC 41-532-21)
manualmanualALPHA appliance manual — CD18S (GC 41-532-06), CD18S (LPG) (GC 41-532-13), CD30S (GC 41-532-08), CD30S (LPG) (GC 41-532-14)
manualmanualALPHA appliance manual — CD24S (GC 41-532-02), CD24S (LPG) (GC 41-532-15)
manualmanualALPHA appliance manual — HE SY25 (GC 41-532-07), HE SY25 (LPG) (GC 41-532-12)
manualNo technical questions yet for this part.
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