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EIA-520AAAE 1988 Edition, December 1, 1988
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Detail Specification for Switch, Pushbutton, Square or Rectangular Mounting, Illuminated or Non-Illuminated, 3 A
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The illuminated and non-illuminated electronic control pushbutton switches of certified quality covered by this detail specification:

a)    Mount in a panel hole of either 19.05 mm (.750 inch) square or 19.05 mm (.750 inch) X 28.98 mm (1.141 inch).

b)    have a maximum rated voltage of 250 volts.

c) have a maximum rated current of 3 amperes.

Type Designation Switches covered by this detail specification shall be described by the following in the order shown:

a)   The designation for the blank detail specification.

b)   The number for the detail specification.

c)   The type of configuration [1].

d)   The type of lamp [1].

d)   The type of switching circuits [1].

e)   The type of display configuration [1].

g)   The type of display [1].

h)   The colors of the button display [1].

NOTE [1]; See Table 1 for code numbers.