The search phrase “ya 2rb19 a64 micro switch” may help locate information, but the phrase alone does not show that it is an official model designation or identify a particular switch. Treat “micro switch ya 2rb a64” as a search variant, not as evidence that the two phrases refer to the same device. Token order, spacing, and suffixes may matter, and their meaning must be confirmed in documentation that explicitly identifies the designation.
Until that match is established, specifications and identity remain unresolved. A search result, product listing, or visually similar component cannot by itself confirm a switch’s ratings, dimensions, terminals, manufacturer, or compatibility. The careful approach is to find authoritative documentation, confirm exactly what item it covers, and check the stated revision and conditions before relying on any technical detail.
What does the ya 2rb19 a64 micro switch phrase identify?
On its own, the phrase identifies a search query, not a verified switch model. A string that looks like a part number may be a model identifier, a partial marking, a component code, a variant, or text assembled from more than one source. Without an exact-match document that defines it, there is no sound basis for choosing among those possibilities.
The alternate phrase “micro switch ya 2rb a64” is also only a search variant. It omits a token from the primary phrase, but that difference does not establish that the omitted token is optional or that both searches point to the same item. Nor should the order of tokens be rearranged or a suffix interpreted as a particular electrical or mechanical option without documentary support.
Search results can be useful for finding candidate documents. They are not, by themselves, confirmation of identity. A listing that repeats the phrase may have copied it from another listing or may use it informally. An image with similar markings or appearance also does not establish that the item is the same variant.
For an identification to be usable, a document should explicitly connect the complete designation to the item it describes. If the available material shows only some of the characters, or gives no explanation of the code, keep the identification provisional. Do not fill gaps by guessing what a token or suffix means. That distinction prevents a search phrase from being mistaken for evidence about a specific product.
How to verify the ya 2rb19 a64 micro switch designation
Start by looking for an authoritative document that reproduces the complete identifier and explicitly says what it designates. Check the title, scope, document body, and any tables or drawings that define covered items. A document that contains a similar string but never links it to the item in question is not an exact match.
Next, establish the document’s subject. It may describe a complete switch, a component used within one, a variant, or a larger assembly. Those are not interchangeable descriptions. If the document covers an assembly, for example, details for the assembly do not automatically define every component inside it. Keep the identification at the level the source actually supports.
Record the document revision and any qualifications attached to its statements. A characteristic may apply only to specified variants, configurations, or test conditions. Confirm that the marking or identifier on the item corresponds to the designation in the document, including relevant spacing, suffixes, and variant notes. If a marking is incomplete or unclear, do not assume the missing characters.
Where possible, cross-check the designation against the equipment documentation that references the switch. The purpose is to confirm the item’s role and applicability in that equipment, not to infer a replacement or connection scheme. If authoritative sources disagree, or if none explicitly resolves the identifier, report the identity as unverified rather than selecting the most plausible interpretation.
Which specifications require exact-model evidence?
Electrical ratings must be tied to the exact documented item and its stated conditions. Rating values are specification-sheet requirements associated with a stated load and test conditions, not universal switching capacities. A value without its relevant load type or conditions may be insufficient for judging whether it applies. Do not transfer a rating from a similar-looking or similarly named switch.
Mechanical details also require exact-variant evidence. Dimensions, actuator form, mounting features, and terminal layout should come from documentation that identifies the applicable configuration. A generic drawing or an image may not distinguish variants. Do not infer dimensions or terminal positions from the phrase, from token order, or from physical resemblance alone.
A generic changeover contact may use the labels common, normally closed, and normally open. Those labels do not verify the contacts or layout of an unidentified device: the exact switch’s markings or schematic control. When interpreting documentation, use the documented connection diagram, terminal marking, circuit function, and permissible load for the exact switch and equipment rather than inferring connections from a generic physical arrangement. This is an evidence boundary, not wiring guidance.
Environmental protection and certification claims likewise need documentation for the relevant configuration and test scope. A statement about one variant, assembly, or test does not necessarily cover another. Durability results are also condition-specific: they apply only with the specified electrical load, operating sequence, cycle count, and environmental or test conditions. A result without those conditions should not be treated as a general life guarantee.
Terminology in a technical specification may distinguish actuating force, releasing force, free position, operating position, movement differential, pretravel, and overtravel. These are separate characteristics, not interchangeable descriptions. Use the definitions and measurement context in the applicable documentation rather than assuming what a term means for an unverified item. In each case, the identifier and the scope of the evidence must match before a specification can be applied.
Can this identifier establish replacement compatibility?
No. A similar identifier, appearance, or partial match does not establish that another item is interchangeable. Compatibility depends on the requirements of the equipment and the documented characteristics of the exact items involved. The search phrase supplies none of those comparisons by itself.
A considered comparison would need applicable equipment documentation and evidence for relevant electrical requirements, mechanical form, mounting, terminal arrangement, and intended circuit function. It would also need to account for the permissible load and any other stated operating or environmental conditions. If a required detail is absent or applies to a different variant, the comparison remains unresolved.
The wiring diagram, terminal markings, circuit function, and permissible load documented for the exact switch and equipment govern interpretation. Generic terminal conventions or physical-layout assumptions do not establish the connections of a particular device. This article does not identify terminals, provide wiring instructions, or determine whether a substitute can be used.
Even where two documents list some matching characteristics, that is not enough to conclude compatibility if other required details have not been checked. A replacement decision must be grounded in the applicable equipment requirements and exact-item documentation. Without that evidence, neither a positive compatibility claim nor a specific substitute is supported.
Related guides
What to do when the designation cannot be verified
Treat search results and informal listings as leads that may help locate better documentation, not as proof of identity. Look for an exact identifier in authoritative material, then confirm the document’s scope, revision, covered configuration, and stated conditions. If the available sources show different spellings or omit tokens, preserve that uncertainty rather than silently treating the forms as equivalent.
Gather the complete markings that are actually visible and the equipment context that can be documented. Do not infer hidden characters, ratings, dimensions, terminal functions, or manufacturer identity. Compare the available evidence with the equipment documentation, but keep conclusions limited to what the sources explicitly establish.
If the identity or applicability remains unresolved, avoid model-specific decisions that depend on it. Obtain documentation that resolves the designation and its scope before relying on technical characteristics. The phrase “ya 2rb19 a64 micro switch” is useful as a search starting point; only an explicit, applicable document can turn that starting point into a verified identification.
Sources and references
- Defense Logistics Agency ASSIST: MIL-PRF-8805K: Switches and Switch Assemblies, Sensitive, Snap Action, General Specification For
- Occupational Safety and Health Administration: 29 CFR 1910.333: Selection and Use of Work Practices
- Wikipedia: Miniature snap-action switch