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
© 1999–2012 Schneider Electric All Rights Reserved
31-EN
ENGLISH
Circuit Breaker Accessory Cover
Replacement
Replace circuit breaker accessory cover as directed in the Install
Accessories section of the circuit breaker instruction bulletin shipped with
the circuit breaker.
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.
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.
Figure 46: Install 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).
Figure 47: Install Adjustable Rating Plug
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C
B
7 lb-in
[0.8 N•m]
Must be
seated
Must be flush
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