Identifying 34400 for maintenance and replacement enquiries
34400 identifies a ComPact NS630bN circuit breaker. This page is a reference for identifying and quoting 34400; the common main image is a Schneider category collage, not a guaranteed picture of the exact unit. Read the complete designation on the installed component before selecting a replacement.
Identification passport
| Technical item | Verified value / selection note |
|---|---|
| Full designation | 34400 |
| Documented role | ComPact NS630bN circuit breaker |
| Rated current | 630 A |
| Poles | 3 |
| Trip unit | MicroLogic 2.0 E |
| Mounting | Fixed |
Capture the entire reference and revision.
Check duty, mounting and connections.
Record the test and approved configuration.
Configuration boundary
The record above gives only the facts that can be supported for 34400. It does not decode every suffix or establish every rating of 34400. Ask for the original datasheet or configuration printout when the installed assembly includes options, firmware, a trip unit, a cable, a sensor or an interface card.
For 34400, compare the equipment tag and system drawings with the visible markings. Confirm supply, poles, contacts, protocol, measured range, nominal force or network role as applicable. Do not copy a value from a similar-looking code. If a number is missing, leave it open until the manufacturer record or actual nameplate resolves it.
Procurement and receiving notes
Request an offer for the exact 34400 designation and required quantity. The offer should identify stock condition, manufacturer, document revision, included accessories and any exclusions. If the supplier proposes an alternative to 34400, ask for a separate written comparison rather than silently accepting a different product family.
At receipt, inspect the 34400 label, packaging and supplied accessories. Keep the serial or batch number when present. For a protection, safety or control component, preserve the old settings and approved wiring design before the existing 34400 is removed.
Site acceptance
Install 34400 only under the applicable isolation and safety procedure. Commissioning must test the specific installed function: switching or protection behavior, relay I/O, sensor response, communication, valve travel or cabling continuity as relevant. A visual match does not prove that 34400 has the correct settings or compatibility.
Record the test result and exact 34400 code in the maintenance file. If the part is obsolete or service status differs by region, verify stock and approved migration path with the manufacturer. Keep a separate note for substitutions because the replacement may require engineering changes.
Related-looking references
These 1 designations resemble the 34 portion of 34400. They are gathered here for finding an enquiry only; a related-looking reference can have a different function, rating or interface and is not automatically interchangeable with 34400.
Release statement
Use 34400 as the search and purchase reference only when the verified identity and the site's requirements align. Review each unconfirmed configuration item before issuing an order. This 34400 record is an identification aid, not a substitute for the manufacturer manual or a site-specific engineering approval.
