LA39-B Series APT Push Button Switch

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LA39-B Series APT Push Button Switch

LA39-B series pushbuttons have novel structure, aesthetic appearance and complete varieties, which can provide the best solutions as well as control elements with high quality, high performance and high reliability for customers of industrial automation, medical devices, electricity, machinery, communication, transportation, metallurgy, chemical industry and other industries.

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Plastic actuation head is economic and beautiful, especially suitable for the applications with higher requirements on double insulation or resistance to chemical corrosion. Installation hole diameter: φ 22.5mm;

The customers can select the contact combination types as per their requirements with maximum six pairs of contacts. The leaf spring type actuation mechanism is adopted with the contact self-cleaning function and reliable contact;

Complete specifications, including reset buttons, self-locking buttons, illuminated buttons, mushroom buttons, knobs, key buttons and emergency stop buttons etc.;

Five types of installation methods: installation with the inclined screws to prevent looseness, installation with the straight screws to save the installation space, simple installation with the nuts with/without fastening screws, fast and convenient installation by one hand;

The luminous body of the illuminated pushbutton applies pure super bright LED with the lightness above 100cd/m2;

The mechanical service life of normal buttons is above 3,000,000 times; the continuous illumination life of the illuminated pushbuttons is above 100,000 hours;

The symbol leaf or label frame can be provided according to the requirements of the operation instructions from the customers;

Catalog: LA39-Series-Pushbutton-AD16-Series-Indicator-Light-Selection-Manual.pdf

Additional information

Rated insulation voltage


Power frequency withstand voltage

AC1890V 50Hz .5s

Conventional thermal current


Mechanical service life

3,000,000 times for normal buttons and mushroom buttons
300,000 times for knobs and two-position buttons
100,000 times for self-locking buttons
50,000 times for key buttons and emergency stop buttons

Electrical service life

≥600,000 times

Ambient temperature


Storage temperature


Action frequency

1,200 times/hour

Product certification


Compliance standards

IEC 60947 / GB 14048.5

Protection class


Altitude of installation place

not more than 2,000m

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