CESSB340 1¾" 3kw 16" Immersion Heater

Product Code: SH316C-BA1CA1(CESSB340)

This is a 3kw, 15inch immersed length CESSB340 Incoloy Immersion Heater complete with combined (operating & safety cut-out) plug-in thermostat and is typically used within standard unvented domestic water cylinders.. Installed products will often carry the ThermTec brand which is owned and manufactured exclusively by Heatrod Elements in Manchester.

The CESSB 340 can be used in all standard domestic water areas including normal use in hard water areas susceptible to limescale. The sheath of this product is upgraded to Incoloy 825 which gives particularly good performance in rigorous domestic usage and increased life in hard water areas. 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.

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 CESZB340.

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 CESSB-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 CESSB340 can be found here.



£46.80 £39.00 (ex VAT)

Available on request


Category: .

Additional information

Loading (kW)


Voltage (V)


Secondary Protection


Length (mm/Inch)


Element Diameter (mm)


Stat Inches


Sheath Material

Incoloy 800

Head Size (BSP)

C: 1.75″ BSP (1 ¾”)

Thermostat Type

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

Q: I have a Flowmax 180 Comb Electric tank, I need 2 immersion heaters. Please provide a price. thanks
— Asked by Jaspal Panesar on October 26, 2020
A: To give you a price, we would need to know the following information; thread size (BSP), immersed length and kW rating. Kind regards, Hayley
— http://Hayley%20Ashford

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