Masterpact® circu it breaker
accessories
MP1 037P.O
1 4
The Masterpact circuit breaker i s equipped
with a true two-step stored energy
mechanism which insures fast opening and
closing operations and complete open-close
open sequence without recharging the
mechanism. The Masterpact circuit breaker
has manual actuators: charging handle,
push-to-open and push-to-close buttons. I n
addition, remote operation i s possible with
field-installable accessories:
•
spring charging motor (MCH)
•
closing release (XF)
•
undeNoltage trip device (MN) or shunt
trip (MX) for opening
The manual operating mechanism can still
be used in an emergency. The addition of
the electrical operating mechanism does not
alter circuit breaker dimensions.
spring charging motor (MCH)
The spring charging motor automatically
charges the stored energy mechanism
(when the circuit breaker closes) making
0-C-0 cycles possible without recharging.
Opening and closing operations are
instantaneous.
operation counter (COM)
With gear motor option only. The operation
counter is read from the front and gives the
total number of circuit breaker operating
cycles.
"spring-charged " switch
This type "b" switch is closed when the
spring is charged. It comes standard with
the spring charging motor and is provided
with a common terminal.
closing coil
(XF)
This device releases the circuit breaker
closing mechanism when the spring is
charged.
The closing coil is rated for continuous duty.
The closing release is supplied on request
and can be fitted even on a manual
operating mechanism.
Anti-pumping function:
When the permanently energized closing
coil (XF) is installed, the circuit breaker
remains in the open position after it has
been opened, either by manual or electrical
operation. The circuit breaker can be
reclosed only if the closing coil is
momentarily de-energized.
Note:
this anti-pumping function can be
disabled by series connecting a
" ready to close" switch (PF).
spring charging motor
closing coil
-----r----,--------
1
I
spring
:0:
I
charged
I
I
I
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M P 1 0 1 5A.O
control voltage
(V)
60 Hz
1 20-240
DC
24-48-1 25
consumption
AC
1 80 VA
DC
1 80 W
inrush current
2 to 3 x In for 0.1 sec.
charging time
3 to 4 sec.
60 Hz
240V 1 0
DC
1 25V 0.5
250V 0.25
breaker closing time
operating voltage
60 Hz 1 20-240
DC
24-48-1 25
60 Hz 20 VA
DC
1 5 W
-----,----
remote
close
f
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A1
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M P 1 0 1 5A.O
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