ST945U3W Unica switchable trailing lead: application and interface review
Use the full ST945U3W designation when discussing this Unica switchable trailing lead with a supplier or engineer. The Schneider category main image is a shared reference collage, not an exact photo of ST945U3W. The table records limited confirmed facts; the site-specific decision requires the current product document and installed-system information.
Verified technical reference
| Technical item | Verified value / selection note |
|---|---|
| Complete model | ST945U3W |
| Product identity | Unica switchable trailing lead |
| Outlets | Five Schuko sockets |
| USB | Two USB outlets |
| Cable | 3 m |
| Colour | White |
Where the item fits
The selection question for ST945U3W is not simply whether the code looks familiar. Identify its actual role as Unica switchable trailing lead, the equipment it connects to, and the site operating conditions. Confirm plug standard and connected load limits. Record any missing interface value as a question to verify rather than filling it from a neighboring model.
Keep ST945U3W in the equipment schedule with the intended host, panel or circuit. A shared product picture can show the general category, but it cannot verify terminal layout, voltage, current, firmware or mechanical dimensions of the delivered ST945U3W.
Mating and integration checks
Before ordering ST945U3W, compare electrical supply, protection, signals or communication settings where relevant. Confirm mechanical installation, mating connector and accessory dependencies. If an engineering drawing refers to another code, obtain an approved cross-reference before substituting ST945U3W.
For maintenance replacement, capture the original nameplate and any revision label. Compare the complete string with ST945U3W; a changed suffix can alter a component's function. Review thermal, environmental and safety limits with the manufacturer's exact documentation, not with a general family image.
Quotation and receiving controls
Ask for an offer naming ST945U3W exactly, with quantity, destination, lead time and current data sheet. Clarify whether a cable, fuse, mounting part, software or other accessory is included. If ST945U3W is discontinued, ask for a documented alternative and evaluate its differences before purchase.
When ST945U3W arrives, inspect package condition and label. Confirm that the full marking matches the approved order, photograph it and record the supplier's reference. Quarantine a unit labelled differently from ST945U3W until the substitution has been reviewed.
Installation and acceptance
Install ST945U3W under the applicable safe-isolation and manufacturer's instructions. Record relevant setting values, wiring, mounting and connected equipment. A functional test should demonstrate the intended role of ST945U3W without relying on code appearance alone.
Retain the final ST945U3W designation, the tested configuration and the location in the maintenance record. This allows a later buyer to distinguish the installed item from a similar-looking spare. Any change from ST945U3W should remain traceable to engineering approval.
Look-alike catalogue references
No additional unassigned ST945-pattern code is indexed under ST945U3W. Any proposed alternate still requires its own identity and fit check.
Selection conclusion
Approve ST945U3W only when the verified product facts, installation interface and quotation agree. Keep the complete ST945U3W phrase in the purchase order and acceptance record; do not treat a near-looking designation as interchangeable without manufacturer and engineering evidence.
