Eaton MDS-608 User Manual

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Instructions for Installation, Operation and Maintenance of

Magnum DS, DSX and DSL Low Voltage Power Circuit Breakers

I.B. 2C12060H08 Supersedes I.B. 2C12060H07 dated April 2005

Effective May 2006

IB2C12060H08

For more information visit: www.EatonElectrical.com

www . ElectricalPartManuals . com

Table of Contents

Questions and Answers:

J
Jonathan BakerAug 7, 2025
What to do if the Eaton Power Tool circuit breaker trips open?
- Y
  Yolanda BennettAug 7, 2025
  If the Eaton Power Tool circuit breaker trips open, it could be due to several reasons. First, ensure the rating plug is installed and corresponds to the current sensors. If the breaker trips repeatedly due to transient current, allow the breaker and loads to cool before re-closing. Finally, an overload or fault current condition may be present. Use the status and fault indicators to locate and remove the overload or fault.
C
Chad SimpsonAug 21, 2025
Why does my Eaton MDS-608 Power Tool circuit breaker open if the fault trip indicator button is not out?
- S
  Stephen AyersAug 21, 2025
  If your Eaton Power Tool circuit breaker opens and the fault trip indicator button is not out, several factors could be at play. It might be due to undervoltage release operation; in this case, check and correct the UVR supply voltage to be within 85-110% of the rated voltage. Alternatively, the shunt trip may be operating, so check the control signals to the shunt trip and correct if necessary. If neither of these is the cause, the trip latch may be defective, so inspect its condition and engagement before closing.

Eaton MDS-608 Specifications

General

Brand	Eaton
Model	MDS-608
Category	Power Tool
Language	English

Summary

Introduction to Magnum Circuit Breakers

General Information on Magnum Breakers

Overview of Magnum DS, DSX, and DSL circuit breakers and their applications.

Safety Features of Magnum Breakers

Built-in interlocks and safety features for hazard reduction and proper operating sequences.

Safety Practices for Magnum Breakers

Essential safety practices for installation, operation, and maintenance personnel.

Qualified Personnel Requirements

Defines personnel qualifications for operating, maintaining, and installing circuit breakers.

Receiving, Handling, and Installation of Magnum Breakers

General Information on Receiving and Handling

Information on receiving and handling circuit breakers, often shipped as part of assemblies.

Magnum Circuit Breaker Description and Operation

Electronic Tripping System Overview

Overview of the three-part electronic tripping system: trip unit, sensors, and actuator.

Microprocessor-Based Trip Unit Details

Introduces the Digitrip RMS trip units and their features.

Rating Plug Functionality

Explains the function of the rating plug in setting the trip unit and sensors.

Current Sensor Functionality

Describes the toroidally wound current sensors installed in the breaker.

Drawout Circuit Breaker and Cassette Features

Drawout Cassette Description

Details the drawout cassette and its interfaces for primary and secondary connections.

Inspection and Maintenance of Magnum Breakers

General Importance of Inspection and Maintenance

Emphasizes the importance of inspection and maintenance for equipment longevity and safety.

Items to Inspect on Magnum Breakers

Outlines what to inspect, including primary disconnects and signs of wear.

Functional Field Testing Procedures

Details functional tests for manual and electrical operation of the breaker.

Rating Plug Replacement Procedure

Step-by-step instructions for replacing the rating plug on the trip unit.

Current Sensor Replacement Procedure

Procedures for removing and installing current sensors.

MDSL Current Limiter Replacement

Troubleshooting Magnum Circuit Breakers

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