Identify the complete part.
Record the series and every suffix from the part or drawing. A photograph helps identify the starting point, but cannot establish electrical compatibility or exact dimensions.
Information to prepare
Full model reference, marking photographs and tool or assembly reference.
Describe the supply and control requirements.
Provide the application requirements for supply, motor load, speed control and reversing. Ask for a current specification linked to the exact variant; do not transfer a rating from another series or suffix.
Information to prepare
AC or DC supply, required voltage and motor load, speed-control and reversing requirements.
Check the mechanical fit and connections.
Compare a dimensioned drawing with the available installation space. Include the trigger profile, travel, mounting features, terminal arrangement and any wiring or connector requirements.
Information to prepare
Drawing or measured dimensions, mounting details and terminal or wiring information.
Request the variant-specific documents.
State the operating conditions and destination market. Request the applicable specification and approval documents, then confirm sample, quantity and delivery requirements with the supplier.
Information to prepare
Operating conditions, required documentation, intended quantity and sample request.
Common selection questions
Can I choose a switch from its photograph?
A photograph is a useful starting point. Selection still needs the complete model, dimensions, connections and electrical requirements. Similar-looking switches are not necessarily interchangeable.
Does a family name identify one specification?
No. The catalogue shows multiple variants within each family. Use the complete reference and obtain the specification for that variant before ordering.
What if the current part reference is unreadable?
Prepare clear photographs of the markings, housing, trigger and connections, plus the tool reference and available drawings. Treat any suggested series as a candidate until its mechanical and electrical requirements have been verified.
Source: FESU 2023 product catalogue. This is a selection reference, not a current specification or approval statement. Open the original catalogue
