What are corrosion-resistant basic switches?
ID： FAQE20013E
update:
Answer
There are various types of corrosion and Omron’s basic switches have various specifications such as gold contacts, sealed structures, and built-in reed switches that will help prevent corrosion. Select proper specification as needed.
Explanation
Oxidation and sulfurization of silver contacts are inevitable due to the external environment. However, it is possible to reduce the influence by using gold contacts, sealed structures, and built-in reed switches.
The criteria for the environment cannot be defined. It is recommended to perform evaluation under actual usage with the following types of switches:
- Those that use gold contacts (0.1A rating or microload switching compatible product)
- Sealed basic switch (less susceptible to external environmental influences because its structure prevents water from entering)
- Built-in reed switch type (D2RV)
Note that the metal parts other than contacts are affected.
For more information, see "Basic switch” Structures.
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Which basic switches have gold-plated contacts?
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Gold contacts are mainly used in 0.1A rated Omron basic switches.
VX-01, D2MV-01, D2MC-01, D2VW-01
SS-01, D2S-01, D3M-01, D2SW-01, SS-01P, D2SW-P01
D2F-01, D2FD-01, D2HW, D2JW-01, D2FW-G01
Gold-plated sliding contact: D2QW-C0
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What is the sealing performance (waterproof, dustproof, gas resistance) of a basic switch?
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Omron basic switches have a lineup of IP40 to IP67 protective structures with waterproof and dustproof specifications conforming to the protective structure. We have sealed basic switches with IP67. Please note that we do not have standards for gas resistance.
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What are countermeasures to silicone for a basic switch?
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As stated in the catalog, we do not recommend using the products in an atmosphere with silicone gas. Unless you remove the silicone gas from the environment, it is difficult to eliminate the problem for switches with contacts.
