LEGRAND DMX3 User Manual

120 pages

To Next Page

To Next Page

Page #1 background image

Loading...

Page #1 background image

Mars 23

LE13029AA

Table of Contents

Other manuals for LEGRAND DMX3

Maintenance Guide76 pages

Questions and Answers:

M
Matthew DavisAug 4, 2025
What to do if my LEGRAND Switch ACB trips after closing?
- M
  Mary ChavezAug 4, 2025
  If the LEGRAND Switch trips after closing, it could be due to an overload fault if the tripping occurs after a few seconds or minutes. If tripping happens within a second, other faults may exist. Inspect the unit protection to identify the fault and then resolve the underlying cause. Alternatively, a continuous command to the Shunt Release might be the reason. Verify the command's origin.
H
Heather SmithAug 11, 2025
How to fix LEGRAND Switch ACB that does not close on pressing “ON” button?
- D
  Danny ScottAug 11, 2025
  If the LEGRAND Switch ACB does not close when you press the “ON” button, it could be due to several reasons. The U/V release might be present but not energized; in this case, energize the U/V release. Alternatively, the mechanism spring might not be charged; manually charge it until the spring status indicator turns yellow. Another possibility is that the reset button is ejected; press the reset button. Finally, the mechanical interlock could be disabling the closing; recheck it before attempting to close the breaker again.
C
Christopher BrownAug 19, 2025
What to do if LEGRAND Switch ACB does not close electrically?
- R
  Riley ThomasAug 19, 2025
  If the LEGRAND Switch ACB does not close electrically, it indicates that the “Ready to close” (RC) conditions are not being met. You should check all RC conditions to resolve this issue.

LEGRAND DMX3 Specifications

General

Brand	LEGRAND
Model	DMX3
Category	Industrial Equipment
Language	English

Summary

Safety Instruction

Handling and Unpacking

Breaker Operation

Technical Specifications

General Features

Lists the general technical specifications, ratings, and compliance standards for the DMX3 1600.

Installation and Door Cut-out

Fixed Version Installation

EMS System Installation

Draw-out Version Installation

Termination - Fixed Version

Termination - Draw-out +base version

Install Device in D/O Base

Electrical Diagrams

Dielectric Test

Setting up Protection Unit

Protection Levels Setup

Covers the setup of protection levels using the navigator knob or software.

Standard Functions

Reset PIN

Details the MAN and AUT position settings for the reset PIN.

DMX3 Startup and Checks

Operator Checks

Lists operator checks to verify proper installation and component coherence.

Startup Procedures

Details the steps for initial startup, including setting up the protection unit.

Maintenance and Troubleshooting

Restoring After Tripping

Troubleshooting Guide

Provides common situations, probabilities, and solutions for troubleshooting DMX3 breakers.

Related product manuals

LEGRAND DMX3 1600

LEGRAND DMX3 2500

Preview: LEGRAND DMX3 Series

LEGRAND DMX3 Series

LEGRAND Solarfective SF-T4

Preview: LEGRAND DPX

Preview: LEGRAND DX3

Preview: LEGRAND DPX3