Danfoss Thermostat AT Data sheet

Data sheet

Thermostat type AT

Application

Technical Data

The AT pipe thermostat is used to regulate the
medium temperature in the pipe on which the
thermostat is mounted. AT senses the temperature
in the pipe through its contact surface and is
therefore suitable to control boiler or flow
temperature in central heating systems.

The AT pipe thermostat comprises a bimetallic
sensor, a contact system and a setting knob.
On connection to terminals CO and NC the
thermostat breaks on a rise in temperature.
On connection to terminals CO and NO the
thermostat closes on a rise in temperature.

The AT thermostat can be mounted on the pipe
without emptying the plant of water.

Temperature range 30 to 90 °C

Temperature scale external (type 041E0000)

Temperature differential 8 K

Max. temperature plant surface Ts90

Max. ambient temperature 55 °C

Storage temperature -20 to 90 °C

Switch system SPDT

Enclosure IP40

Terminal CO-NC Breaks on temperature rise

Terminal CO-NO Closes on temperature rise

Switch load

-marking in accordance with the directives

Environment Normal

Installation Installed in any position

6 (2.5) A, 250 Vac

0.1 A, 250 Vdc

• EMC

• LVD

• RoHS

Accessories

© Danfoss | 2021.05

Product Code no.

Heat-conductive compound ~ 6 g 041E0115

Heat-conductive compound ~ 454 g 041E0116

AI040586453748en-010201 | 1

Data sheet Thermostat type AT

Installation

Electrical connections Internal ground terminal screw in the base, M3.5.

The AT thermostats are mounted directly on a
pipe with the steel band provided, suitable for
pipe sizes G ½ to 3.

A tube containing heat-conductive compound is
supplied with the thermostat. The compound has
very good heat conducting properties and should
be applied between the thermostat contact
surface and the pipe.

Alternatively, plug connection (AMP).

Electrical connection, M3.5 screw terminals or
plug (AMP).

Dimensions

Additional documentation on burner components is available on http://heating.danfoss.com/

2 | © Danfoss | DCS-SGDPT/DK | 2021.05

AI040586453748en-010201