ABB

REX 521, Feeder Protection Relay, Alarm LED Label CAD drawings & downloads

ABB REX 521, Feeder Protection Relay, Alarm LED Label: protection or metering reference for protection-panel and metering arrangement. Manufacturer reference 1MRS151300.

PDF · 1 listed file · Source checked 2026-11-04

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REX 521, Feeder Protection Relay, Alarm LED Label

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Equipment and file summary

Equipment / resource
REX 521, Feeder Protection Relay, Alarm LED Label
Manufacturer
ABB
Resource type
Named drawing reference
Manufacturer drawing
1MRS151300
Manufacturer reference
1MRS151300
Document revision
A
Listed file formats
PDF
Listed files
1
Available previews
1 drawing previews
Recorded revisions
A
Source checked
2026-11-04
Download access
Email registration for site downloads; official source links are also available

2D drawing preview

Original manufacturer drawing sheet
1MRS151300 · page 1: CAD drawing preview
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REX 521, Feeder Protection Relay, Alarm LED Label

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Which file should I choose?

Use 1MRS151300.pdf revision A to read the original manufacturer sheet and its annotations.

What is included?

Reference 1MRS151300 covers “REX 521, Feeder Protection Relay, Alarm LED Label”.

Checked source file: 1MRS151300.pdf · 102 KB · PDF.

Before using it

  • Check the exact case, terminal arrangement and mounting option. A device outline does not determine protection settings, CT ratios or the electrical design of the protected circuit.

In plain English

Using the REX 521, Feeder Protection Relay, Alarm LED Label reference

ABB REX 521, Feeder Protection Relay, Alarm LED Label: protection or metering reference for protection-panel and metering arrangement. Manufacturer reference 1MRS151300.

A simple example

Use 1MRS151300.pdf revision A to read the original manufacturer sheet and its annotations.

Questions about this resource

What can I use the REX 521, Feeder Protection Relay, Alarm LED Label reference for?

Use this protection or metering reference for protection-panel and metering arrangement. Check the exact case, terminal arrangement and mounting option. A device outline does not determine protection settings, CT ratios or the electrical design of the protected circuit.

Which manufacturer reference identifies this drawing?

ABB reference 1MRS151300. The file list retains the original source and recorded revision.

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Sources & versions

Original publisher: ABB. Source checked 2026-11-04. Original bytes are preserved; file links and document references identify the source.

Manufacturer
ABB
Resource
Named drawing reference
Formats
PDF
Regional source coverage
Global

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Verified file identity

1MRS151300.pdf · PDF · 104,184 bytes

SHA-256: 96f77a11fe14f1b9f42a68db2be6bf863c83d6f3efd7acbece115fa116ef1061

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