Supplement Contents
Z3
Indicators
Accessories
Z
Supplement Tactiles KeylocksRotaries PushbuttonsIlluminated PBSlides Programmable
Toggles
Rockers
Touch
Tilt
www.nkk.com
Product Safety Precautions Page
Safety Precautions ...................................................Z27
In-House Standard Test Methods
.......................................Z28
General Tolerances
..................................................Z29
Materials & Conversions
Plastics & Elements ..................................................Z30
Temperature
........................................................Z30
Linear Dimensions ...................................................Z30
Force & Torque .....................................................Z30
Plating Thickness .................................................... Z30
Weight ............................................................Z30
Electrical Ratings
Rerating Current ....................................................Z31
Inductive DC Loads; TV Ratings ........................................Z32
Operating Range & Dual Ratings .......................................Z33
Lamps & LEDs
Rerating ...........................................................Z34
Application Considerations ...........................................Z35
Ballast Resistor Calculations & Recommendations .......................... Z36
Processing Data
Processing Recommendation Guide ..................................... Z38
Process Sealed Switches; Automated Cleaning Specifications ................Z39
Manual Solder – Profiles A, B ..........................................Z39
Wave Solder for Through Hole – Profiles A, B .............................Z40
Reflow Solder for SMT – Profiles A, B
...................................Z40
Standards & Approvals
UL Recognition, cULus Recognition, CSA Certification ......................Z41
VDE, ISO, IP .......................................................Z45
Terms & Acronyms
Terms & Acronyms ..................................................Z46
Federal Supply Code ................................................Z51
Product Overview
Ultra-Miniature, Subminiature, Miniature, Specialty,
Illuminated, Standard & High Capacity .................................. Z52
Index by Model Number .....................................Z54
Safety Precautions
Z27
Indicators
Accessories
Z
Supplement Tactiles KeylocksRotaries PushbuttonsIlluminated PBSlides Programmable
Toggles
Rockers
Touch
Tilt
www.nkk.com
Read all specifications, instructions and precautions to ensure proper use when selecting and using products. NKK Switches
does not accept liability for any problems due to incorrect usage.
Although NKK Switches’ products are designed and manufactured in accordance with the highest quality standards, it is
nevertheless possible for switch failure to occur as a result of improper or unintended use that could result in performance
degradation, short circuits, open circuit failure, and semiconductor failures. To prevent possible injury or property damage, it
is recommended to incorporate circuits or devices to protect against the failure of products and the malfunction of equipment
design. Confirm that NKK Switches’ products are wired and installed properly.
1. Voltages and Current
Check the specifications provided for the selected series and do not exceed the parameters for rated voltages and current
recommendations.
Certain types of load may lead to large surge currents or reverse voltages. Select switches with the appropriate ratings to suit the type of
load. Using an incorrect switch may result in abnormal wear, seizing, or contact failure.
Do not use switches under conditions that exceed their rated voltage or current specifications, as it may result in smoke, fire, or other mal-
function. If there is a risk of exceeding rated voltage or current, precautions should be in place, such as appropriate protective circuits.
2. Usage Environment
Take account of the particular environment and conditions before selecting products.
Products do not feature sealed construction unless specified as waterproof. Sealed, or waterproof products are intended as panel sealed
and cannot be used underwater or submersed in oil. Use in environments where the product may be subject to splashing liquids or dust
may result in contact failure.
The use of waterproof caps is recommended where dirt, water, oil, or other substances may accumulate on the moving parts of panel
surfaces.
Switches that are rarely operated should be actuated periodically to prevent potential problems, such as lubricants hardening and
contact degradation.
Do not use switches in an environment where flammable gases are present. Heat generated by switch operation may lead to ignition
or explosion.
Switch durability (service life) may vary significantly, depending on operating conditions. Before use, confirm compatibility of the switch
selected for the application under actual usage conditions. Do not exceed the number of recommended operation cycles. Continuing to
use switches with degraded performance may result in insulation failure, contact seizing, contact failure, damage, or burnout.
The resin used for products has been specially selected in accordance with the standards of NKK Switches. Do not use where there may
be a risk of combustion unless appropriate fire prevention measures have been taken.
3. Soldering Temperature
Soldering times and temperatures should not exceed recommended ranges for each specific series.
Do not operate switches during or immediately after soldering (within 1 to 2 minutes), as it may lead to melting of resin components.
Do not apply force to the terminals or lead wires.
4. External Force
Handle switches with care, as they may become damaged if impacted or dropped, whether loose or in packaging.
Operate switches by applying force in the correct direction.
Do not apply excessive force. Note that subjecting products to undue force may deform the terminals or cause contact failures or
malfunctions. Do not subject the operating parts to impact – for example, with use of screwdrivers, wrenches, or other tools.
NKK SWITCHES PRODUCT SAFETY PRECAUTIONS