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Potterton Thermal Fuse Cable (Heat Exchanger) 7661040

Potterton

Potterton Thermal Fuse Cable (Heat Exchanger) 7661040

Thermal fuse cable for the heat exchanger on Potterton Commercial Sirius 2 and Sirius 3 boilers, part number 7661040.

Manufacturer part no.
7661040
Showing prices

£7.56

£6.30 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The CABLE - THERMAL FUSE (HEAT EXCHANGER) is a Potterton Commercial spare, part number 7661040. It is the thermal fuse cable associated with the heat exchanger on Potterton Commercial Sirius 2 and Sirius 3 boilers, forming the overheat cut-out link in that circuit.

Signs this part needs replacing

  • The boiler locks out or fails to fire, with the thermal fuse link open circuit.
  • No continuity is measured through the fuse cable when tested.
  • Repeated overheat faults traced to the heat exchanger fuse link.
  • Visible damage to the cable or fuse body, such as brittle or discoloured insulation.

Before you order

  • Confirm the boiler model against the Sirius 2 or Sirius 3 listings above.
  • Check that the part number on the existing cable matches 7661040.
  • Verify the fault lies with the heat exchanger thermal fuse cable rather than another sensor or lead on the appliance.

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.