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LEXICON
Operating life, temperature resistance,
vibration and electric resistance
16
Operating life
The operating life speci?es the minimum number of switch cycles within
the speci?c values. It depends on a large number of parameters that
are determined by the intended application case. Among these are, for
example:
? switched current and switching voltage
? type of load (e.g. ohmic, inductive or lamp load)
? Combination of materials in actuating element/actuator
? Actuator type
? Actuator speed
? Switching frequency (switching cycles / min)
? Pretravel / Overtravel
? Environmental factors such as climate conditions or harmful gases
(e.g. SO 2 )
Please note:
Media such as greases, oils and materials which contain silicon must not
be used on the switch. There is a distinction between mechanical and
electrical operating life.
Mechanical life
Indicates how often a switch can be actuated without an electrical load.
Mechanical endurance is calculated by actuating the snap switches axially
in relation to the actuator in a sinusoidal pattern using about 80 % over-
travel at a switching frequency of 4 Hz at room temperature.
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