Masterpact ® circuit breaker
control u nits
fau lt indicator (option F)
In addition to the mechanical fault indicator,
this indicator differentiates the three causes
of tripping: overload, short circuit or ground
fault if any.
configuration with
reliable control voltage
24 Vdc
1 W
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fau lt and alarm indicators
configuration with interruptible
control voltage
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Three light-emitting diodes indicate
separately long-time, short-time/
instantaneous and ground-fault trip.
A flat push button allows resetting of the
indicator after tripping.
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1 20V, 60 Hz
24·48·1 25 Vdc
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AC :
1 20V, 60 Hz
DC :
24·48·125 Vdc
A separate power supply is required to
maintain the indication after tripping of the
circuit breaker. Two different possibilities are
offered:
•
connecting a reliable 24 Vdc control
voltage on F1 - F2. Auxiliary power module
(AD) is used for other voltages. When the
control source is considered as unreliable, a
battery pack (BAT) is to be added to an AD
power module.
•
from a built-in battery module. When no
external control source is available, a built-in
battery module may be ordered (option PIL).
This module integrates battery testing and
indicator re-activating buttons.
alarm indicator
pre-trip alarm switch
Delivered as standard with control unit.
The alarm indicator is a fixed, front face
light-emitting diode which operates as
follows:
•
fixed when the current exceeds 90% of
the current setting
•
flashing on overload: according to time
current curves, 1 05% to 1 20% of current
setting.
The pre-trip alarm switch is a static contact
which closes when in the overload zone, up
to the tripping of the circuit breaker.
This contact can be used for ultimate load
shedding, alarm before tripping, etc.
output char.
0. 1 A/240 Vac (optical triac)
power supply
not required
segregated trip switch
(option
V)
This switch works exactly as the standard
overcurrent trip switch (SDE) except that a
commutator on the front face is used to
choose the type of fault which will operate
the contact: overload, short-circuit, ground
fault, or any combination of these types.
This option can be used in addition to the
SDE switch for remote signalization of
particular types of faults.
A flat push button allows resetting of the
indicator after tripping.
output char.
5A/240 Vac
power supply
required
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overcurrent trip switch (SDE)
Delivered as standard with control unit.
In addition to the fault trip indicator/reset
button, one SPOT switch provides alarm/
lockout information. This SPOT switch is
operated only when the circuit breaker is
tripped by the control unit.
When the circuit breaker is reset, the "a"
switch (alarm) is open and the "b" switch
(lockout) is closed.
output char.
SPOT 1 OA/240 Vac
power supply
not required
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Wired in parallel with the remote opening
button which operates the shunt trip, the
option V contact provides an electrical
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MP101 5A.O
interlock which prevents the circuit breaker
from being reclosed after the pre-selected
type of faults: for example the circuit breaker
will be able to be remotely reclosed after
overload, but not after short circuit.
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