Danfoss ECtemp 330 Electronic Thermostat

Danfoss ECtemp 330 Electronic Thermostat-fig1

  • Danfoss A/S is not liable or bound by warranty if these in-structions are not adhered to during installation or service.
  • The English language is used for the original instructions. Other languages are a translation of the original instructions.
  • © 2013 Copyright Danfoss A/S


  • ECtemp 330 is an electronic thermostat to be installed in electric cabinets with DIN rail attachment. Used primar-ily for controlling a lower temperature range as by frost protection. The thermostat must be installed via an all-pole disconnection switch. Either a wire sensor or an external air sensor must be used to measure and control the desired temperature.
  • The thermostat has a button to adjust the temperature setting, with a scale from -10° to +10°C. An LED indicator shows standby periods (green light) and heating periods (red light).
  • More information on this product can also be found at: ectemp.danfoss.com

Technical Specifications

Operation voltage 220-240V~, 50Hz
Standby power consumption Max 0.25W

Resistive load Inductive load


Max 16A / 3680W @ 230V

cos φ= 0.3 max1A

Sensing units NTC 15kOhm at 25°C
Sensing values:





42kOhm 15kOhm 6kOhm

Hysteresis ± 0.2°C
Ambient temperature 10°C to +50°C
Lowering in economy periods -5°C
Temperature range -10°C to +10°C
Cable specification max 1x4mm2 or 2×2,5mm2
Ball pressure temperature 75°C
Pollution degree 2 (domestic use)
Type 1C
Storage temperature -20°C to +65°C
IP class 20
Protection class Class II –
Dimensions 86 x 36 x 58mm
Weight 83g

The product complies with the EN/IEC Standard “Automatic electrical controls for household and similar use”:

  • EN/IEC 60730-1 (general)
  • EN/IEC 60730-2-9 (thermostat)

Safety Instructions
Make sure the mains supply to the thermostat is turned off before installation.
Please also note the following:

  • The installation of the thermostat must be done by an authorized and qualified installer according to local regulations.
  • The thermostat must be connected to a power supply via an all-pole disconnection switch.
  • The sensor is to be considered as live voltage. Have this in mind if the sensor must be extended.
  • Always connect the thermostat to continuous power supply.
  • Do not expose the thermostat to moisture, water, dust, and excessive heat.

Mounting Instructions

Please observe the following placement guidelines:

  • Install the thermostat in an electric cabinet with DIN rail attachment or a separate DIN attachment accord-ing to local regulation on IP classes.
  • Do not place the thermostat in a way that it will be exposed to direct sunlight.

Follow the steps below to mount the thermostat:

  1. Click the thermostat on to the DIN rail attachment.
  2. Connect the thermostat according to the connection diagram.Danfoss ECtemp 330 Electronic Thermostat-fig2
    Danfoss ECtemp 330 Electronic Thermostat-fig3
    • The screen of the heating cable must be connected to the earth conductor of the power supply cable by using a separate connector.
      Note: Always install the floor sensor in a conduit in the floor.
  3. Turn on the power supply.


A 2-year product warranty is valid for: thermostats: ECtemp 330 (-10 to +10°C).

  • Should you, against all expectations, experience a problem with your Danfoss product, you will find that Danfoss offers Danfoss warranty valid from the date of purchase on the following conditions: During the warranty period Danfoss shall offer a new comparable product or repair the product if the product is found to be faulty by reason of defective design, materials or workmanship.
  • The repair or replacement.
  • The decision to either repair or replace will be solely at the discretion of Dan-foss. Danfoss shall not be liable for any consequential or incidental damages including, but not limited to, damages to property or extra utility expenses. No extension of the warranty period following repairs undertaken is granted.
  • The warranty shall be valid only if the WARRANTY CERTIFICATE is completed correctly and in accordance with the instructions, the fault is submitted to the installer or the seller without undue delay and proof of purchase is provided. Please note that the WARRANTY CERTIFICATE must be filled in, stamped and signed by the authorized installer performing the installation (Installation date must be indicated). After the installation is performed, store and keep the WARRANTY CERTIFICATE and purchase documents (invoice, receipt or similar) during the whole warranty period.
  • Danfoss warranty shall not cover any damage caused by incorrect conditions of use, incorrect installation or if installation has been carried out by non-author-ized electricians. All work will be invoiced in full if Danfoss is required to inspect or repair faults that have arisen as a result of any of the above. The Danfoss warranty shall not extend to products which have not been paid in full. Danfoss will, at all times, provide a rapid and effective response to  all complaints and inquiries from our customers.
  • The warranty explicitly excludes all claims exceeding the  above conditions.
  • For full warranty text please use QR codeDanfoss ECtemp 330 Electronic Thermostat-fig4
    Danfoss ECtemp 330 Electronic Thermostat-fig5

Disposal Instruction

Danfoss ECtemp 330 Electronic Thermostat-fig7


  • Danfoss A/S
  • Nordborgvej 81
  • 6430 Nordborg, Syddanmark Denmark
  • Any information, induding, but not limited to information on selection of product, its application or use, product design, weight, dimensions, capacity or any other technical data in product manuals, catalogues descriptions, advertisements, etc. and whether made available in writin9, orally, electronically, online or via download, shall be considered informative, and iIs only binding it and to the
    extent, explicit reference is made in a quotation or order confhrmation. Danfoss cannot accept any responsibility for possible errors in catalogues, brochures, videos and other material.
  • Danfoss reserves the right to alter its products without notice. This also applies to products ordered but not delivered provided that such alterations can be made without changes to form, fit or function of the product.
  • All trademarks in this material are property of Danfoss A/S or Danfoss group companies. Danfoss and the Danfoss logo are trademarks of Danfoss A/S. All rights reserved.


Product documentation

Danfoss ECtemp 330 Electronic Thermostat-fig6

Documents / Resources

Danfoss ECtemp 330 Electronic Thermostat [pdf] Installation Guide
ECtemp 330 Electronic Thermostat, ECtemp 330, Electronic Thermostat, Thermostat
Danfoss ECtemp 330 Electronic Thermostat [pdf] Installation Guide
ECtemp 330 Electronic Thermostat, ECtemp 330, Electronic Thermostat, Thermostat


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