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Heatrae Sadia Thermostat / Thermal Cut Out BBSC 80/100 7037740

Heatrae Sadia

Heatrae Sadia Thermostat / Thermal Cut Out BBSC 80/100 7037740

Thermostat and thermal cut-out BBSC 80/100 (part 7037740) for Heatrae Sadia Hotflo 80L and 100L 3kW vertical water heaters.

At a glance

  • Also known as 1736335
Manufacturer part no.
7037740
Showing prices

£67.20

£56.00 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 Heatrae Sadia 7037740 is a combined thermostat and thermal cut-out, referenced BBSC 80/100. It is fitted to Heatrae Sadia Hotflo vertical water heaters, where it regulates the stored water temperature and provides a safety cut-out if the cylinder overheats.

Signs this part needs replacing

  • No hot water despite the heater being powered.
  • Stored water temperature is inconsistent or does not reach the set point.
  • The thermal cut-out trips repeatedly and needs manual resetting.
  • Water overheats or the cylinder reaches excessive temperature.

Before you order

  • Confirm your cylinder is a Heatrae Sadia Hotflo 80L or 100L 3kW vertical model.
  • Check the existing thermostat/cut-out is marked BBSC 80/100.
  • Verify the part number 7037740 against the manufacturer's parts list for your appliance.
  • Isolate the electrical supply before removing or fitting any component.

Not sure which part?

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