Technical handover for ABB 1SAZ211201R1051

ABB 1SAZ211201R1051 is the representative identifier for TA25DU thermal overload relays. The procurement and maintenance notes below describe its documented role as a TA25DU-25 motor overload relay, followed by the checks required before it is used at a real site.

Verified technical data

These ABB 1SAZ211201R1051 values apply to the representative only. A related code can change voltage, contacts, dimensions, protocol, approval or rated duty; read its own label before substitution.

Service request

The work request for ABB 1SAZ211201R1051 should state the failed function, the existing nameplate and the asset location. The intended application is to protect a matched motor feeder from sustained overload. Record the actual circuit or control point so the replacement decision is tied to a specific duty, not to a visual resemblance.

If ABB 1SAZ211201R1051 is proposed as a replacement, capture the former unit's complete designation and compare the functions that matter to the operating plant. A family match narrows the search but does not by itself authorize interchange.

Order review

For ABB 1SAZ211201R1051, the purchasing description needs the complete order reference and the relevant configuration. Check motor full-load current, contactor fit and trip class. Request written clarification whenever a quoted alternative differs in suffix, revision, frame or accessory set.

The buyer should keep ABB 1SAZ211201R1051 separate from service kits and companion accessories. Confirm quantity, mounting hardware, connection method and any software or configuration deliverable before issuing the order.

Fit and interface

Before ABB 1SAZ211201R1051 is installed, compare mechanical dimensions, panel opening or rack position, terminal arrangement, wiring diagram and environmental limits. On a networked product, include the addressing and software dependency review.

For ABB 1SAZ211201R1051, document the power supply, connected load or instrument signal at the real interface. Any safety or protection function needs the approved design calculation and competent review.

Incoming inspection

When ABB 1SAZ211201R1051 arrives, compare the box, device marking and paperwork with the purchase order. Look for shipping damage, missing parts, changed terminal layout or a different revision. Isolate a discrepant item until engineering resolves it.

Photograph the ABB 1SAZ211201R1051 marking and preserve its traceability. A shared reference image on a website is not proof that a particular delivered unit has the same electrical rating or options.

Commissioning record

Qualified personnel should install ABB 1SAZ211201R1051 under the site's isolation and permit procedure. After wiring or assembly, test approved trip and reset logic. Record the test conditions, result and any setting changed from the approved baseline.

The release to service for ABB 1SAZ211201R1051 requires a successful functional test of the complete circuit, not just a powered indicator. Resolve unexpected alarms, communications or mechanical behavior before handover.

Next maintenance cycle

Retain the final ABB 1SAZ211201R1051 order code, drawings, settings and acceptance results with the asset history. This lets the next team distinguish an approved replacement from a superficially similar variant.

If ABB 1SAZ211201R1051 later becomes unavailable, reassess the TA25DU thermal overload relays alternatives against the same service request. Do not assume that the next code in a catalog is a drop-in substitute.

Handover condition

Accept ABB 1SAZ211201R1051 only when the exact identity, installation interface and test record all agree.

Keep the approved ABB 1SAZ211201R1051 documentation with the equipment record for later troubleshooting and purchasing.