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Vaillant Terminal Block 0020100978

Vaillant

Vaillant Terminal Block 0020100978

Vaillant terminal block, part number 0020100978, for wiring connections within Vaillant appliances.

At a glance

  • Also known as 1384859
Manufacturer part no.
0020100978
Showing prices

£10.98

£9.15 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 Vaillant 0020100978 Terminal Block is a wiring connector used within Vaillant appliances. It secures and terminates conductors at a connection point, keeping cores fixed in position and maintaining a stable electrical joint. It is supplied as a single component under the manufacturer part number 0020100978.

Before you order

  • Confirm the part number 0020100978 matches the terminal block being replaced.
  • Check the number of ways and the conductor arrangement required at the connection point before ordering.
  • Inspect the surrounding wiring and terminals for heat damage, looseness or corrosion, and address any cause before fitting.
  • Isolate the appliance from the electrical supply before removing or fitting any wiring component.

Not sure which part?

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