Before specifying ABB OT400U03P: site questions
Use the ABB OT400U03P identification below as the initial technical checkpoint for a real installation. Any incomplete suffix or coil notation must be resolved against the delivered label.
Key technical data
| Technical item | Verified value / selection note |
|---|---|
| Complete designation | OT400U03P |
| Product family | OT-U03P |
| Component role | UL/CSA non-fusible disconnect switch |
| Type | OT400U03P |
| ABB order code | 1SCA022718R9670 |
| Poles | 3 |
| UL/CSA ampere class | 400 A |
| Mounting | Base mounted, front operated |
| Handle and shaft | Included in cited ABB catalog package |
| Final configuration | Confirm exact nameplate, hardware revision and order options before purchase |
The ABB OT400U03P values describe the cited catalog reference. Verify nameplate details and plant conditions before treating them as acceptance limits.
What work is assigned to this part?
ABB OT400U03P is requested to isolate an approved three-phase feeder. Define the specific motor, circuit or controller tag and the event that prompted the replacement.
Keep the ABB OT400U03P request bounded to the component and its documented accessories. A change to control logic or protection settings is a separate engineering decision.
What must be preserved during replacement?
Before ABB OT400U03P is removed, retain cable identification, setting files, drawings and a baseline of normal indications. Follow the plant's energy-isolation procedure.
Fit ABB OT400U03P with the specified clearances, grounding, terminals and protective devices. Do not modify other equipment merely to accommodate a different variant.
Which inputs determine the correct order?
For ABB OT400U03P, confirm UL/CSA current, horsepower, upstream protection, enclosure and terminals. Photograph the installed label and terminals before any disconnection.
The exact ABB OT400U03P designation matters: coil code, pole arrangement, enclosure, processor revision or protocol may change despite a similar appearance.
How do ratings become a site decision?
Compare the ABB OT400U03P verified values in the table with the real supply, load, environment and installation. A catalog capability only applies under its stated conditions.
If ABB OT400U03P lacks a verified option or rating for this plant, obtain ABB documentation or written engineering approval before ordering.
Which checks prove the installation?
After approved installation of ABB OT400U03P, verify positive isolation and handle travel. Include connected interlocks and all states that the process owner requires.
Record the ABB OT400U03P serial or revision, test conditions, observed results and witness. Return the plant to normal only after sign-off.
How should purchasing treat an alternative?
For ABB OT400U03P, the RFQ should include the complete model, approved article number where available and the equipment label. State required accessories separately.
A proposed substitute for ABB OT400U03P needs a comparison of ratings, fit, approvals, control interface and commissioning effort before acceptance.
Same-series models to discuss with the supplier
The following OT-U03P references are grouped with ABB OT400U03P. They are not automatically interchangeable; compare each full code and its electrical, mechanical or software options.
- OT600U03P
Final handover
Keep the ABB OT400U03P selection evidence, ordered code, installed label and test report together with the equipment record.
Where ABB OT400U03P is part of a safety or production-critical circuit, retain the approved rollback plan and operating authorization.
