Technical data

11/98
©1995 Square D—All Rights Reserved
6
Description
Description
1. Arc chamber and terminal covers
2. Accessories and control unit front
connecting block
3. Position carriage switches
4. Opening coils
5. Arc chute
6. Spring charging motor
7. Front cover
8. Control unit
9. Racking crank
10. Pull-out handgrip
11. Retractable rails
12. Handling handgrip
13. Safety shutters
06313012
06313013
O
push OFF
MERLIN GERIN
MP20
H1
masterpact
connected
test
disconnected
O
OPEN
discharged
I
push ON
circuit breaker
3 pole
600V 50/60Hz
frame size 2000A
suitable for continious operation
at 100% rating in a minimum cubical
space H17.5 by W21 by D14.1/4 inches
ventilation is not required
interrupting rating
max RMS sym amps
Volts
240
480
600
short time rating 75KA
Amps
75K
75K
75K
IEC 957-2 690V 50/60Hz
interrupting rating
Icu 380/440V 75KA
660V 75KA
Icu 380/440V 75KA
660V 75KA
short time rating
Icw=75KA 0.5 sec.
E63335
UND. LAB. O List.
CIRCUIT BREAKER
Doles. Issue N
° LM-8792
00000
push to reset
I
I1 I2 I3
90%
50%
20%
STR 58 U
Ir
90
105
%Ir
.88
.9
.92
.95
.98
1
.8
.85
xIo
Im tm
3
45
6
8
101.5
2
xIo
.3
.4 .3
.1
.1
.2
on I
2
t off
.2
0
Ir fault
tr
Im fault
tm
I
fault
Ih
th
t
i
test
+ S –
– T +
T
F
Ih th
400
500 600
800
1000
1200
250
320
A
.3
.4 .4
.2
.1
.2
on I
2
t off
.3
.1
I
off
2
xIn
Ir :
Im :
th :
I
IG LI
G
L
LG
LIG
off
reset V
tr
60
120 240
480
15
30
at 1,5Ir
4
6
8
12
17
22
Ic1 Ic2
.86
.9
.93
.95
.98
1
.8
.85
.7
.8 .85
.95
.5
.6
xIr
.9
1
R
xIr
test
Io=3000A
cat. no. 54775
for masterpact
with sensors In = 6000A
11
12
2
3
4
5
6
9
8
7
10
1
Front View
1. Charging handle
2. Manual opening push button
3. Manual closing push button
4. Stored energy mechanism status indicator
(charged or discharged)
5. Main contact position indicator (open or
closed)
6. Disconnected position locking (key
interlock)
7. Disconnected position padlocking
8. Drawout position indicator showing that the
circuit breaker is in the connected, test or
disconnected position
9. Racking crank storage
10. Door escutcheon
11. Fault indicator and reset button
12. Open position locking (key interlock)
13
12
11
10
9
123
4
5
6
78