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Technical Terminology & Cautions for Use
Technical Terminology & Cautions for Use
(Operation Switches)
TECHNICAL TERMINOLOGY
■ Rated values
Values indicating the characteristics and performance guarantee
standards of the switches. The rated current and rated voltage,
for instance, assume specific conditions.
■ Electrical life
The service life when the rated load is connected to the contact
and switching operations are performed.
■ Mechanical life
The service life when operated at a preset operating frequency
without passing electricity through the contacts.
■ Dielectric strength
Threshold limit value that a high voltage can be applied to a
predetermined measuring location for one minute without
causing damage to the insulation.
■ Insulation resistance
This is the resistance value at the same place the dielectric
strength is measured.
■ Contact resistance
This indicates the electrical resistance at the contact part.
Generally, this resistance includes the conductor resistance of
the spring and terminal portions.
■ Vibration resistance
Vibration range where a closed contact does not open for longer
than a specified time due to vibrations during use of the snap-
action switches.
■ Shock resistance
Max. shock value where a closed contact does not open for
longer than a specified time due to shocks during use of the
switches.
■ Allowable switching frequency
This is the maximum switching frequency required to reach the
end of mechanical life (or electrical life).
■ Temperature rise value
This is the maximum temperature rise value that heats the
terminal portion when the rated current is flowing through the
contacts.
■ Actuator strength
When applying a static load for a certain period on the actuator
in the operation direction, this is the maximum load it can
withstand before the switch loses functionality.
■ Terminal strength
When applying a static load for a certain period (in all directions
if not stipulated) on a terminal, this is the maximum load it can
withstand before the terminal loses functionality (except when
the terminal is deformed).
–6–
AECTB38E 201811-T
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