Many Elstein Infrared Heaters have a Standard Socket, with which they can be easily mounted on a reflector sheet. The heaters' leads have defined standard lengths, but it is also possible to manufacture heaters with longer leads. The lenght can almost be chosen to customers' demand but it should not exceed 400 mm, because then the electrical safety is no longer guaranteed. For lengths over 400 mm our manufacturer's liability expires.

Due to the thermal expansion, when designing plant or systems you must ensure that the infrared heaters have adequate space. In general, a distance of 3 mm should be available between adjacent infrared heaters. The installed dimensions to be observed are given in the datasheets for Elstein Infrared Heaters.

The service life of infrared heaters depends on the conditions of use and the heater operating temperatures. The following table contains details of the service life of Elstein heaters (230 V) when operated under normal conditions:


Service Life


          > 35000 h

e.g. FSM Series

at   400° C

approx. 20000 h

e.g. FSR   250 W

at   700° C

approx. 10000 h

e.g. FSR 1000 W

at   900° C

approx.   8000 h

e.g. HTS 1000 W

at 1100° C

approx.   2000 h

e.g. HLS   750 W


Unfavourable use conditions or an incorrect use of the heater can reduce the service life. Negative influencing factors with respect to service life are, for example, chemical contaminations (chlorine, fluorine, hydrofluoric acid, caustic soda, nitrogen or peroxide), excessive mechanical loads or stresses and overheating.

As a standard, Elstein Infrared Heaters are designed for 230 V. Sometimes however, customers want or need to use other operating voltages. Most Elstein Infrared Heaters can also be supplied with other voltages. Operating voltages above 270 V, however require thinner heating conductors than usual. The consequence is a lower durability under the same operating conditions.

Except for under atmospheric conditions, Elstein Infrared Heaters are also used in vacuum. They are however not available in an explosion-proof version. Nevertheless, there are ways to reach solutions, which enable Elstein Infrared Heaters to be used. We will be pleased to advise you if you have corresponding heating tasks.