AESTB340 2¼" 3kw 16" Immersion Heater

Product Code: SH314A-AA1CA1

This is a 3kw, 15inch immersed length AESTB340 Incoloy Immersion Heater complete with combined (operating & safety cut-out) plug-in thermostat and is typically used within standard unvented domestic water cylinders. The element is bonded to the brass flange with an environmentally friendly, WRAS approved, epoxy bond, making for more robust hydraulic and corrosion proof performance.

Installed products will often carry the ThermTec brand which is owned and manufactured exclusively by Heatrod Elements in Manchester. The AESTB 340 can be used in all standard domestic water areas including normal use in hard water areas susceptible to limescale. If particularly aggressive water conditions are present or the duty/usage is higher than normal then we would recommend an equivalent product with titanium element which is the AESZB340.

This immersion heater is most commonly fitted with Diamond-H WTS, Cotherm TSE00187,
TSR00014 and Thermowatt RTS-3 dual function thermostats
See our “Thermostats & Controls” section for more details and to purchase these products.

The AESTB-340 is designed to meet European Standards EN 60335-2-73:2003 +A1:06 + A2:09 used with EN 60335-1:2012 for the safety of electrical appliances that heat liquids for household and similar purposes. Testing has been carried out and the product approved by NEMKO – certificate available on request

Installation Instructions for AESTB340 can be found here.



£38.40 £32.00 (ex VAT)


Category: .

Additional information

Loading (kW)


Voltage (V)


Secondary Protection


Length (mm/Inch)


Element Diameter (mm)


Stat Inches


Sheath Material

Incoloy 800

Head Size (BSP)

2 ¼

Thermostat Type

Coltherm TSE or Thermawatt RTS-3, Cotherm TSE or Thermawatt RTS-3, Diamond-H WTS Dual Function Thermostat

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