Navien
Navien Terminal Block 30017284A
Terminal block for Navien NCB-CE ERP system boilers, part number 30017284A.
£16.80
£14.00 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 Navien terminal block, part number 30017284A, is an electrical connection component used on Navien NCB-CE ERP system boilers. It provides a secure, screw-terminated interface for wiring within the boiler's electrical assembly. It is a serviceable part intended for replacement when the existing block is damaged or its terminals no longer hold a reliable connection.
Signs this part needs replacing
- Terminals that are discoloured, blackened or show signs of heat damage
- Cracked or brittle plastic housing around the terminal positions
- Screws that will not tighten or hold a conductor securely
- Intermittent electrical faults or loss of power to connected components
- Visible corrosion or arcing marks on the terminal contacts
Before you order
- Confirm your boiler model and serial number against the fitment list above
- Isolate the electrical supply to the boiler before inspecting or replacing the part
- Inspect the existing terminal block and its wiring for damage that may extend beyond the block itself
- Check that the replacement block matches the terminal layout and connection points of the original
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| NAVIEN NCB-CE 20KW SYSTEM BOILER ERP - (Serial Number 6662) | — | — | — | |
| NAVIEN NCB-CE 20KW SYSTEM BOILER ERP - (Serial Number 6662) | — | — | — | |
| NAVIEN NCB-CE 23KW SYSTEM BOILER ERP - (Serial Number 6663) | — | — | — | |
| NAVIEN NCB-CE 23KW SYSTEM BOILER ERP - (Serial Number 6663) | — | — | — | |
| NAVIEN NCB-CE 28KW SYSTEM BOILER ERP - (Serial Number 6664) | — | — | — | |
| NAVIEN NCB-CE 28KW SYSTEM BOILER ERP - (Serial Number 6664) | — | — | — | |
| NAVIEN NCB-CE 33KW SYSTEM BOILER ERP - (Serial Number 6665) | — | — | — | |
| NAVIEN NCB-CE 33KW SYSTEM BOILER ERP - (Serial Number 6665) | — | — | — |
Documents & drawings
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