More than sensors+automation

JUMO frostTHERM-AT/-DR (604100)


  • Surface temperature monitoring through the probe line
  • Microswitch with snap-action switch system
  • "Push-In®" clamps
  • Easy to install and use


  • Safety temperature monitor
  • Safety temperature limiter

Customer benefits

Time saving
The "Push-In®" connection technology allows a much shorter installation time as complex connection work is no longer necessary.

The case design of the frostTHERM-AT allows the device to be installed on a wall. The design also enables the installation as a pipe-mounted thermostat.
The frostTHERM-DR version is suitable for installation on a DIN rail.

Energy saving
No additional power source is required for temperature measurement. For this reason, the electro-mechanical thermostat offers a decisive advantage.


Control and monitoring of systems that are susceptible to frost

  • In air-conditioning and ventilation technology
  • In refrigeration technology
  • In building automation


The frost protection thermostat is used for temperature monitoring in ventilation and air conditioning systems to prevent damage caused by freezing. It has a small switching differential and a high reproducibility. Reset is automatic (STW) or manual (STB).

High application flexibility and the latest connection technology are the essential equipment features of this thermostat series. The thermostat case is suitable for all common installation types such as wall, pipe, and DIN rail installation. The frost THERM-DR type is a specific variation with a special case bottom section for DIN rail or wall mounting. As a result, easy installation on mounting rails TH35 according to DIN  EN 60715 (e.g. in control cabinets) is possible. Installation time is considerably reduced with this version.

With the "Push-In®“ terminal technology the connection wires only have to be inserted into the terminal point up to the stop. No tool is required for connecting the wire or strand with a ferrule and the wiring becomes safer. In this manner, the costs and time required for connection are considerably reduced compared to the conventional screw terminal.

The "Push-In®" terminal technology allows direct switching of loads up to 16 A at 230 V AC. The installation costs can be reduced further because a load contactor is no longer required.

Declaration of Conformity / White Paper

Accessory articles

Article number Product description Price / piece
Set Holder long distance line (6 pieces price on request
Set Halterung Fernleitung (3 Teile verpa price on request

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