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Masterpact™ MP ci rcu it breaker
control u n its
5T 4085 - 5T 4185
for selective application
and generator protection
1
mechanical pop-out type fault indicator
and reset button
•
indicates that a fault trip has occurred
•
prevents reclosure of the circuit breaker
after fault until reset
2
ammeter (LED
digital display)
3
ammeter selector
used to :
•
read phase currents (1 , 2, 3)
•
read the phase with the highest load
current (max)
4
sensors rating
5
local fault Indicators (option
F) :
they consist of built-in light emitting diode :
•
fault indicators differentiate the 3 causes
of tripping: overload, short circuit and ground
fault if any.
•
alarm indicator indicates before the
breaker trips that the long time pickup has
been exceeded.
ground fault (option T) or load monitoring
(option R):
6
ground fault or load monitoring pickups
7
ground fault time delay or load monitoring
pickup
8
long time pickup
9
short time pickup
1 0
short time delay
11
long time delay
12
test receptacle
time
long time setting
current
time
current
8
1
2
3
6
7
4
5
a
9
1 1
10
12
overcurrent
short time
instantaneous
pickup
1 .6 to 1 0 x current
bands
0 - 0.1 - 0.2 - 0.3
ST 408S
(A)
250-1600
2000
standard
28
21
2500
3000
18
14
(muttiple of sensor
factOrysat
12·14-18-21 12-14-18 12-14
12
ST 418S
without
test receptacle
for overcurrent and
fault
fault
(2)(3)
pickup
MP08 to MP20
0.2 to 0.6 x sensor
MP25 to MP30
0.2 to 0.4 x sensor
MP40 to MP50
fixed at 1 200A
delay band
0. 1-0.2 - 0.3 - 0.4
zone selective
with optionZ
load
inverse time
pickup
alarm
option
R
time delay
fault Indicators
lc1
=
0.8 to 1 x current
lc2
=
0.8 to 1 x current
see time-current curve page 27
4000
5000
14
14
12
12
remote
overcurrent
- see
discriminated
local
with option F - see page 1 0
built-in ammeter
option
I
control voltage
1 20 to 240V 50-60Hz
display
phase 1 , phase 2, phase 3, phase max.
accuracy
± 1 ,5 % ®
MERLIN GERIN
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