Eaton AQB-L400 User manual

Page 2

An E aton AQB-L400 Adapter Kit provides the means for
converting the normally male configured primary
connections of an AQB-L400/LL400 current limiting
circuit breaker to female configured primary connections,
normally associated with an AQB-LF400 circuit breaker
(Figure 1-5). A close out plate, attached directly to the
front of the AQB-L400 circuit breaker with four mounting
screws, provides the deadfront cover required to com
plete the conversion.
The adapter kit itself is comprised of line and load side
adapter blocks, six female spring loaded primary connec
tion adapters, a close out plate, and four mounting
screws (Figure 1-3).

a. Tu rn off all power.
b. Remove LF400 breaker, if applicable.
c. The standard male type slip connectors shall be
removed from the AQB-L400/LL400 circuit breaker.
The threaded end of the female connection adapters
attaches in their place. The other end of the female
connection adapters provides the female slip con
nections required for the AQB-LF400 configuration.
d. Mount the tulips to the line and load ends.
1. Note that 4 tulips are offset mounted on their
pads and 2 tulips are centered (Figure 1-4).
2. The centered tulip assemblies mount to the cen
ter pole.
3. Offset tulip assemblies mount to the left and right
poles, with the tulips oriented to the outside of
the breaker.
4. Before tightening the hardware, check the align
ment using the adapter block as a template.
5. If the alignment is correct, tighten the hardware.
I.L. 15578A
ACAUTION
 

 


e. The adapter block is mounted to the circuit breaker
using breaker mounting bolts.
f. The modified breaker is mounted to the LF400
mounting blocks using hardware supplied with the
adapter block.
g. After mounting the breaker on the LF400 block,
attach the close out plate to the front. Once attached
to the front of the AQB-L400/LL400 circuit breaker
with four mounting screws, the close out plate
insures a deadfront installation. In addition, the close
out plate provides front access to the circuit breaker's
operating handle, trip unit adjustments, lower breaker
mounting bolts and megger holes. Access to the
adapter block mounting bolts, however, requires
removal of the close out plate.
h. Since the E aton Adapter Kit applied to an AQBL400/
LL400 breaker is a direct replacement for an already
installed AQB-LF400 breaker, modifications to the
existing bus mounting system are not required. An
already adapted AQB-L400/LL400 breaker can be
mounted on existing blocks, and secured in place
with the provided upper and lower adapter block
bolts (Figure 1-6).
  

Effective October 1997
I.L. 15578A
  


Effective October 1997
Page3
  


In general, follow the mounting procedures normally used
for mounting any AQB-LF400 circuit breaker, when
installing the AQB-L400/LL400 circuit breaker and
Adapter Kit combination. Follow the instructions and pro
cedures provided with the AQB-L400/LL400 circuit
breaker when operating the AQBL400/LL400 and
Adapter Kit combination. Refer to Te chnical Manual
1240C33H01

a. L400/LL400 plus Adapter Kit: See E aton
b. Adapter Kit: 6590C82G01
c. LF400 Mounting Block: 6590C82G03

Page4
E at on
 
Style No. 69C0670H02 Effective October 1997 Printed in U.S.A./CCI
I.L. 15578A
I.L. 15578A
File 29-000
Instructions for Use of E aton Adapter Kit and Navy Type AQBL400 Molded
Case Circuit Breaker Combination in AQB-LF400 Applications
AWARNING
   MAIN

 
 
 ALWAYS

TASK, AND ALWAYS 
LOW GENERALLY ACCEPTED SAFETY PROCE
DURES.
EATON IS NOT LIABLE FOR THE MISAPPLICATION
OR MISINSTALLATION OF ITS PRODUCTS.



  



 
 

  

Effective October 1997 Supersedes I .L. 1557B dated June 1992
PART 1. 
General Information

 






 



  

  E 
