SECTION 9-Fused Breakers (Cont.)
1 .
Spe c ial
2 5 00A
Fu s e
2 .
Di s c onne ct Key
3 .
Heat Sink
4 .
Upp e r Bar r i e r
5 .
Primary Di s c onne ct
FIG. 53 AKRU 50 WITH SPECIAL
2500 AMP FUSE
CAUTION:
WHEN REPLACING THE FUSE IN THE
LEFT POLE (FRONT VIEW) OF THE BREAKER,
N O TE PA R TI C ULA R L Y THA T THIS FUSE IS
MOUNTED DIFFERENTL Y THAN THE OTHER TWO
FUSES. AS SHOWN IN FIG . 54, FOR THIS PHASE
THE FUSE IS ROTA TED
1 80
DEGREES ABOUT
ITS AXIS S O THA T ITS I N B O A R D TA NG IS
POSITIONED
THE B REAKER S TUD.
THIS TANG IS OFFSET WITH RESPECT TO THE
OPPOSITE END SO THA T ROTA TING THE FUSE
DOES NOT ALTER THE POSITION OF THE PRI
MAR Y DISCONNECT.
0
FRONT OF BREAKER
FUSE TANGS
BREAKER
STUD
POSITIONED ON TOP
OF BREAKER STUD
lTANG BOLT•
HOLES
I N USE
L•�
2500A. FUSE
CAT. NO.
GF9F2500 AK
(±) (±)
FOR THIS POLE O N LY,
FUSE I S ROTATED 1 80c
TO POSITION TANG
BENEATH
ER STUD
P R I MARY D I SCONNECT ASSEM BLY (SEE F I G .
53)
MOUNTS DI RECTLY O N OUTBOARD FUSE TANG
FIG. 54
AKRU 50-2500A FUSE TANG POSITIONS
TAB LE 6
FUSES FOR AKRU BR EAKERS
N
E
MA
Gould Shawmut
Fuse
Breaker
Cat. Nos.
Class
Type
Ampere
600V
Rating
60 Hz
30
50
Fuse
Limiter
-
300*
A4J 300
-
-
350*
A4J 350
-
J
-
400*
A4J 400
-
450
A4J 450
-
500
A4J 500
-
600
A4J 600
-
800
A4BY 800
A4BX 800
L
1 000
A4BY 1 000BG
A4BX 1 000BG
1 200
A4BY 1 200BG
A4BX 1 200BG
1 600
A4BY 1 600BG
A4BX 1 600BG
-
2000
A4BY 2000BG
A4BX 2000BG
Special
-
\>
2500
-
A4BX 2500GE
* Mounting adapter required - see Fig. 52
42
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