UM581127000

User Instructions

Issue AB, March 22, 2012

Spec. No. 581127000 (Model 710NPBA)

 

 

 

 

 

 

 

 

 

Replacing a Bullet Nose Circuit Breaker

 

 

 

 

 

 

 

Procedure

 

 

Note: Refer to Figure 4-3as this procedure is performed.

1)Open the distribution cabinet’s front door by turning the latch in the counterclockwise position.

2)Operate the defective circuit breaker to the OFF position.

3)Gently rock the defective circuit breaker up and down while pulling firmly outward until the breaker is free from the distribution panel.

4)Ensure that the circuit breaker is in the OFF position, and is of the correct rating.

5)Orient the circuit breaker as shown in Figure 4-3.Insert the terminals on the rear of the circuit breaker into their corresponding sockets on the distribution panel. Ensure the alarm contact on the back of the circuit breaker makes contact with the alarm terminal on the mounting circuit card. Push distribution device in firmly until fully seated in the distribution panel.

6)Operate the replacement circuit breaker to the ON position.

7)Verify no Circuit Breaker Alarms are active.

8)Close the distribution cabinet’s front door. Turn the latch clockwise to secure the door.

 

Shorter Side

 

to the Top

Lettering on

 

handle must be

Insert these terminals

right side up.

 

into corresponding sockets

Turn off

on distribution panel.

before installing.

 

Longer Side to the Bottom

Figure 4-3

Replacing a Bullet Nose Circuit Breaker

Page 22

Chapter 4. Troubleshooting and Repair

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Systems, North America, Inc. Any copying, use, or disclosure of it without the written permission of Emerson Network Power, Energy Systems, North America, Inc. is strictly prohibited.

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Image 28
Emerson 710NPBA Replacing a Bullet Nose Circuit Breaker Procedure, Insert these terminals, Into corresponding sockets