selector switch sample checks before approval
Agree what the sample must demonstrate, which enclosure and lockout lines count as acceptance, and how a later lot is compared with the approved item.
What a selector switch sample is for
A selector switch sample is a first article for cam positions, contact arrangement, legend plate, mounting hole pattern and handle feel. It is not proof that a later production lot will match unless those points are written as acceptance conditions. A rotary cam selector switch is typically a control-circuit device; if the sample is actually meant to break a main-circuit load, say so before anyone ships a control switch against a disconnect duty. The sample also does not transfer a company-level certificate onto the production model.
Record the offered model number, the datasheet revision, the observed pole and position count, the enclosure NEMA rating if an enclosed operator is part of the item, and the handle or lockout arrangement you will require on production. Photograph the legend and terminal markings. Keep that pack with the purchase file so a later batch can be compared without relying on memory. Read the inquiry options and the notes on procurement articles if the wording of rotary versus disconnect still needs a second pass.
Fix before sampling
- Exact model and rating, including AC or DC and contact configuration
- Accessories included in the sample, such as legend plates, contact blocks and locking rings
- Who pays sample cost and freight, written before the unit ships
- What the sample must demonstrate: positions, mounting, markings and lockout hardware
- Enclosure NEMA rating when an enclosed selector or operator is part of the approval
- How a later lot will be compared: model number, revision and recorded photographs
Discuss selector switch sample needs
Tell us the positions, enclosure and lockout lines you will treat as acceptance. Quotes and samples still require supplier confirmation.