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Instructional Booklet 

IB013003EN

Effective June 2023

Instructions for installation, operation,  

and maintenance of Magnum MR2  

(integral racking) 

EATON

 www.eaton.com

Notices and warnings

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 NOTICE

ALL USERS OF THIS PRODUCT SHOULD READ AND FOLLOW THE  

INSTRUCTIONS PROVIDED HEREIN; HOWEVER, THIS INSTRUCTION BOOK 

SHOULD NOT BE CONSIDERED ALL INCLUSIVE REGARDING INSTALLATION 

OR MAINTENANCE PROCEDURES.  IF FURTHER INFORMATION IS 

REQUIRED, YOU SHOULD CONSULT EATON’S ELECTRICAL SERVICES & 

SYSTEMS. 

 

READ AND UNDERSTAND THIS AND OTHER SUPPLIED INSTRUCTIONS 

AND DRAWINGS IN THEIR ENTIRETY BEFORE INSTALLING OR OPERATING 

THIS DEVICE.  ADJUSTMENT, REPAIR OR MAINTENANCE, OTHER THAN 

THOSE DESCRIBED HEREIN, MUST BE PERFORMED BY QUALIFIED  

PERSONNEL.  A QUALIFIED PERSON IS ONE WHO IS FAMILIAR WITH  

THE CONSTRUCTION AND OPERATION OF THIS EQUIPMENT AND THE  

HAZARDS INVOLVED.

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 WARNING

IMPROPER USE OR MAINTENANCE OF THIS PRODUCT, OR OPERATING 

IT IN A MANNER FOR WHICH IT WAS NOT INTENDED, MAY RESULT IN 

DEATH, SERIOUS PERSONAL INJURY, OR PROPERTY DAMAGE. 

 

READ AND UNDERSTAND THESE INSTRUCTIONS BEFORE ATTEMPTING 

ANY OPERATION OR MAINTENANCE OF THE CIRCUIT BREAKERS OR 

AUXILIARIES TO BE OPERATED BY THIS DEVICE. 

 

ALL SAFETY CODES, SAFETY STANDARDS, AND/OR REGULATIONS AS 

THEY MAY BE APPLIED TO THIS TYPE OF EQUIPMENT MUST BE STRICTLY 

ADHERED TO.

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 NOTICE

THE DANGER, WARNING, AND CAUTION MESSAGES INCLUDED AS A 

PART OF THE PROCEDURAL STEPS IN THIS MANUAL ARE FOR PERSONNEL 

SAFETY AND PROTECTION OF EQUIPMENT FROM DAMAGE.  AN 

EXAMPLE OF A TYPICAL WARNING LABEL HEADING IS SHOWN ABOVE 

THIS PARAGRAPH TO FAMILIARIZE PERSONNEL WITH THIS TYPE OF 

PRESENTATION.  THIS WILL HELP ASSURE THAT PERSONNEL ARE ALERT 

TO THESE TYPES OF MESSAGES.  IN ADDITION, THESE MESSAGES ARE 

ALL UPPERCASE AND BOLDFACE.

All possible contingencies which may arise during installation,  

operation, or maintenance, and all details and variations of this  

equipment are not encompassed by these instructions .  If further 

information is desired by the purchaser regarding particular 

installation, operation, or maintenance of particular equipment, 

contact an Eaton sales or service representative .

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 DANGER

WHEN SWITCHGEAR IS CERTIFIED TO BE ARC-RESISTANT PER  

ANSI/IEEE

®

 STD.  C37.20.7, THE ARC-RESISTANT RATING IS ONLY VALID 

WHEN ALL DOORS ARE CLOSED AND PROPERLY LATCHED OR BOLTED, 

AND ALL COMPONENTS ARE INSTALLED AND WORKING PROPERLY.  

IN ADDITION, REMOVAL OF ANY BREAKER FROM ITS CELL WITHOUT 

REINSTALLING A BREAKER OR ARC-RESISTANT PROVISION COVER WILL 

VOID THE ARC-RESISTANT RATING.

Eaton contact information

Eaton provides technical support for the Magnum PXR and Power 

Defense SB circuit breakers and trip units .  You can contact us via 

several methods .  This link: www .eaton .com/eatoncare will take you 

to the on-line portal where you can contact Technical Support via 

phone, e-mail, or view FAQs .
For support via phone, you can call EatonCare at 877-ETN-CARE 

(877-386-2273) and navigate the menu by selecting:

• 

Option 2 for the Technical Resource Center

• 

Option 2 for Circuit Protection Products

• 

Option 3 for Low-voltage and Medium-voltage Power Circuit 

Breakers

Eaton Electrical Services and Systems (EESS) can be reached at 

1-800-498-2678 .
If further information is desired regarding this particular installation 

or application information, contact the local Eaton sales office, 

reference the equipment documentation, or the appropriate industry 

standards .

Summary of Contents for Magnum MR2

Page 1: ...ndication 5 Setting the breaker type 6 Setting the Modbus address 6 Control options 7 Option 1 7 Option 2 7 Option 3 7 Sequence of operations 7 Diagnostics troubleshooting 8 E1 Motor overcurrent 8 E2 Open motor circuit 8 E3 Motor timed out 8 E4 Magnum breaker position unknown 8 E5 Open permissive 8 E6 Communication error 8 E8 Position switch error 8 Controller diagnostic display 9 Controller mount...

Page 2: ...NNEL WITH THIS TYPE OF PRESENTATION THIS WILL HELP ASSURE THAT PERSONNEL ARE ALERT TO THESE TYPES OF MESSAGES IN ADDITION THESE MESSAGES ARE ALL UPPERCASE AND BOLDFACE All possible contingencies which may arise during installation operation or maintenance and all details and variations of this equipment are not encompassed by these instructions If further information is desired by the purchaser re...

Page 3: ...trol the system by means of a pendant Modbus master such as the Eaton Power Distribution Monitoring and Control system or separately wired I O buttons Controller can be mounted to the left side preferred or right side of the cassette If placed in other areas of the switchgear extension wires can be added with the existing terminal blocks The eight MR2 tertiary wires connect the controller to the M...

Page 4: ...e are three methods to restrict racking a Magnum circuit breaker Option 1 lockout tagout This option prevents both electrical and manual operation Push the padlock slider forward towards the breaker aligning two holes on the left side and insert a padlock see Figure 7 The MR2 will be disabled via the permissive circuit and manual racking is blocked as well The label on the levering door will show ...

Page 5: ...acking Racking indication While electrical or manual racking there exists three discrete colored positions which are disconnect green test yellow and connect red see positions A B and C in Figure 12 At these positions the breaker can be closed when the racking door is fully lowered Figure 12 Discrete colored positions If racking is stopped electrically or manually in between disconnect test or tes...

Page 6: ...available Modbus addresses are 01 to 99 for one RS485 network To set the Modbus address follow the steps below 1 Connect pendant to the controller to be programmed 2 Hold down the Intermediate button and within three seconds press and hold the Connect button until the two digit LED display begins to flash at the same time the Connect LED will begin to flash 3 Now the Test and Disconnect buttons ca...

Page 7: ...ch of the control options Pendant I O and Modbus The Enable button must be held to operate the pendant 1 Insert the breaker into the breaker cell a The breaker is now in the disconnect position b The solid green disconnect LED will be illuminated c To proceed further and rack the breaker to the connected position the breaker must be open If the breaker is closed you will see an E5 code Refer to th...

Page 8: ...communications E3 Motor timed out Condition when motor continues to run in excess of the normal required time to reach the desired position This error state condition can be caused from a malfunction of the MR2 Operator should shut off power to the MR2 controller by tripping the circuit breaker or fuse protecting the controller and manually rack out the Magnum breaker Once the Magnum breaker is re...

Page 9: ...RI RO OC AD 1 2 3 4 5 6 7 8 1 Product group 2 Gear type will always be 02 for Magnum 3 Controller firmware version 4 Pendant firmware version 5 Rack in count 6 Rack out count 7 Overcurrent count 8 Modbus address 01 to 99 Controller mounting The controller can be mounted to the left side or right side of the cassette If placed in other areas of the switchgear extension wires can be added with the e...

Page 10: ...ube is not present please contact Eaton Technical Support and order with style shown in Table 3 Magnalube can be added to the leading edges and surfaces on all primary disconnects that make contact with the cassette stabs Table 3 Greases used on Magnum PXR and PD SB Grease type Desription Magnalube G Eaton standards 53701AI Color Green Manufactured by Saunders Enterprises inc 11 51 44th Road Long ...

Page 11: ...11 Instructional Booklet IB013003EN Effective June 2023 Instructions for installation operation and maintenance of Magnum MR2 integral racking EATON www eaton com Notes ...

Page 12: ...een the parties This literature is not intended to and does not enlarge or add to any such contract The sole source governing the rights and remedies of any purchaser of this equipment is the contract between the purchaser and Eaton NO WARRANTIES EXPRESSED OR IMPLIED INCLUDING WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY OR WARRANTIES ARISING FROM THE COURSE OF DEALING OR USAG...

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