International buyers may see one-way, two-way and intermediate switch descriptions in supplier catalogues. Similar terms do not always mean that two products are interchangeable. For sourcing, the safest approach is to describe the required control function and confirm it against the supplier’s item code and technical information.
Use the function, not just the name
A product name is a useful starting point, but it may not show the internal switching arrangement, terminal layout or intended project use. If the project documents specify one-way, two-way or intermediate control, share that requirement with the supplier and ask for the matching model code and diagram.
Keep terminology consistent across the order
Use the same naming convention in the enquiry, quotation, sample labels, drawings and purchase order. If a project spans several countries, note any local terminology used by the designer or installer. This helps prevent a naming mismatch from turning into the wrong item being sampled or ordered.
What to request
- A model-specific diagram and terminal identification.
- Switch function and rated values for the exact item code.
- Dimensioned drawing and compatible plate or frame.
- Supporting documents for the destination market.
- A labelled sample when the function is critical to the project.
OUBEN’s catalogue lists one-way, two-way and intermediate switch variants in selected series. Confirm the specific function and model availability directly from the item-level documentation. This guide explains procurement checks; installation and circuit design belong with the project’s qualified electrical professional.