48049-136-05

Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units

Rev. 01, 07/2012

Section 4—Trip Unit Replacement

 

 

5.Align the trip unit so top mounting screw (A) aligns with the top threaded insert and start the screw by turning the screw two full rotations.

6.Use a torque-controlled screwdriver to drive the bottom screw (B) to 7 in-lbs (0.8 N•m) ± 10%. The back of the trip unit must be flush with the trip unit mounting base.

7.Use a torque-controlled screwdriver to drive the top screw to 7 in-lbs (0.8 N•m) ± 10%. Mounting tab must be flush with the mounting standoff and sensor plug.

Figure 46: Install Trip Unit

Must be seated

A

06134855

7 lb-in

[0.8 N•m]

B

ENGLISH

NOTE: The face of the closed switch cover must be flush with adjoining mounting base surfaces. If these surfaces are not flush, stop installation and contact the local sales office for factory authorized service.

NOTE: If you are upgrading from a Micrologic 2.0, 3.0 or 5.0 trip unit, the connector block must be ordered separately (Part Number S33101). See instructions shipped with the connector block for installation into circuit breaker.

8.Install connector block (C) into top of trip unit.

9.Install adjustable rating plug into the trip unit.

a.Open switch cover (A) on new trip unit.

b.Inspect mounting area for debris and contamination.

c.Gently push adjustable rating plug (B) into new trip unit.

d.Tighten adjustable rating plug mounting screw (C). The plug will be drawn into position flush with front face as screw is tightened.

10.Set trip unit switches to values recorded above or per coordination study results.

11.Close switch cover (A).

Must be flush

06134856

Figure 47: Install Adjustable Rating Plug

06133223

B

06134244

 

 

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A

C

C

7 lb-in

[0.8 N•m]

A

Circuit Breaker Accessory Cover

Replace circuit breaker accessory cover as directed in the Install

Replacement

Accessories section of the circuit breaker instruction bulletin shipped with

 

the circuit breaker.

© 1999–2012 Schneider Electric All Rights Reserved

31-EN

Page 33
Image 33
Schneider Electric 2.0A, 3.0A, and 6.0A, 5.0A manual Circuit Breaker Accessory Cover, Replacement, Close switch cover a, 31-EN