EFR Fix Thermostat

This fixed temperature thermostat, EFR, with either a normally open (NO) or normally closed (NC) contact is used to control installed devices, such as filer fans or fan heaters, to turn on or off when required. The result is a reduction of operational cost. A pre-set temperature limit prevents unauthorised personnel from tampering with the thermostat.

CE Declaration of Conformity EAC cRUus_UL Recognized
Feature: IP 20
EFR Product Image
EFR3 Catalogue drawing image
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Item list

Item no. Description Description Pre-set
Switch on temperature
Switch off temperature
EFR201 Thermostat NO Fixed Normally opened contact 35 0.05 +35 +25
EFR202 Thermostat NC Fixed Normally closed contact 5 0.05 +5 +15

Technical data


Pre-set thermostats to manage temperature in panels. Sensor element thermostatic bimetal. Red one (EFR202) with a normally closed contact for regulating heaters. Blue one (EFR201) with a normally opened contact for regulating cooling devices or signal devices. Mounting clip for 35 mm DIN rail (EN 60715).


Plastic according to UL94 V-0.

Switch capacity:

250V AC, 5 (1.6) A. 120 V AC, 10 (2) A. 24 V DC, 30 W. Value in brackets for inductive load. Max. starting current of 16 A (AC) for 10 seconds.

Operating temperature:

-40 °C to +80 °C.

Service life:

> 100,000 cycles.


2 pole terminal for 2.5 mm², torque 0.8 Nm max.


IP 20.


CE, EAC, cULus_UL Listed.


Light grey.

Pack quantity:

1 piece.



Fixed temperature thermostat, with either a normally open (NO) or normally closed (NC) contact.


The pre-set thermostat allows energy to flow to a device when the temperature threshold has been exceeded (NO variant), or when the internal temperature has dropped below the threshold (NC variant).


The installed devices, such as filter fans or fan heaters, automatically turn on or off when they are required, which reduces the operational cost of the control panel. The pre-set temperature limit, avoids tampering by unauthorised personnel.


The thermostat with a normally open contact (EFR201), is used to control cooling or high temperature alarms, and the thermostat with a normally closed contact (EFR202), is used to control heating.

Image (JPG 800 x 800 px) EFR Product Image 50 KB
Image (JPG 800 x 470 px) EFR3 Catalogue drawing image 45 KB
Mounting instructions document (PDF) Thermal Management EFR 499 KB
Product sheet (PDF) EFR(RUSSIAN) 128 KB
Document (PDF) CE Declaration of Conformity 195 KB
Document (PDF) EAC 881 KB
Document (PDF) cRUus_UL Recognized 208 KB