Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Valor Overload Motor Switch SI21CS

Valor

Valor Overload Motor Switch SI21CS

Overload motor switch SI21CS from Valor, intended for boiler applications.

Manufacturer part no.
HP08031
Showing prices

£155.41

£129.51 ex. VAT · VAT at 20%

Available to order · 4 working weeks
Available to order · 4 working weeks
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 SI21CS is an overload motor switch supplied by Valor for boiler applications. It sits in the motor control circuit and provides overload protection by interrupting the electrical supply when current draw exceeds the set threshold. The switch is identified by the part number SI21CS.

Before you order

  • Check the markings on the existing switch to confirm the SI21CS part number.
  • Verify the terminal arrangement and mounting of the existing unit against this switch before ordering.
  • Confirm the intended application is a boiler motor circuit, and consult the appliance literature where available.

Not sure which part?

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