5-7
5
Accessories
LED
OFF
DS
OFF(RESET)
+
–
M
P1(+)
ON
COM
P2(–)
E
ON
Uc
The “+” and “–”
symbols indicate the
polarities of DC-rated
motor operators.
Control power circuit
ON/OFF control circuit
Motor drive circuit
LED
LRC
P1(+)
P2(–)
OFF
ON
COM
E
OFF(RESET)
ON
M
Uc
+
–
The “+” and “–” symbols
indicate the polarities of
DC-rated motor operators.
Control power circuit
ON/OFF control circuit
Motor drive circuit
LRC drive circuit
T2MC25L T2MC40 / T2MC80
Motorized operation
The motor operator has an input-signal self-hold circuit; closing the
ON or OFF switch (see circuit diagrams shown bellow) momentarily
allows activating the motor operator. To reset the tripped breaker to
the OFF position, close the OFF (RESET) switch.
The voltage presence LED indication is on when the power is sup-
plied to the motor operator.
■ Auto reset feature (optional)
The auto reset feature allows the breaker to be automatically reset
approx. 1.5 seconds after the breaker trips open. This option con-
tains auto-reset switches and does not require to use auxiliary or
alarm switches installed in the breaker.
Note 1: that after the thermal OCR trips a thermal-magnetic break-
er, the breaker cannot be immediately closed though it can
be auto-reset. Wait for a few minutes after the tripping and
provide a close signal to the breaker.
Note 2: Do not use an alarm switch to reset breakers.
This option resets the tripped breaker automatically, regardless of the
cause of the tripping.
Manual operation
T2MC25L: Pull the operating handle out. Rotating the handle
counterclockwise turns ON the breaker and clockwise turns OFF or
resets the breaker.
T2MC40/80 : Switch to Manual operation from Motorized opera-
tion by Select lever. Use the spring charging handle to charge the
spring and press the ON or TRIP button.
T2MC40/80 : When the TRIP button is pressed while the control
power is supplied, the breaker turns OFF and if equipped with an
alarm switch, it provides an output signal.
Press the TRIP button all the way in. Pressing the TRIP button
halfway causes the breaker to go off without tripping, resulting in no
alarm signal delivered even if the breaker is equipped with an alarm
switch.
Control circuit diagrams of motor operators
Operation precautions
1. Ensure that the actual operation voltage ranges from 85% to
110% of the rated one.
2. Use operation switches whose ratings and power capacity is as
specified in the “Ratings and Specifications” table on the previous
page.
3. Ensure an operating time of 50 msec or more when operating
switches to turn on/off the breaker. A shorter operating time may
result in failure in operating the breaker. In such a case, repeat the
operation.
4. Do not continuously apply ON/OFF operating signals. ON/OFF
signals must be separated by 0.3 sec or more. With the
T2MC40/80, OFF and RESET operations must be 1.5 sec or
more apart.
5. With the T2MC25L, do not connect alarm switches (AL) to the
control circuit (OFF, ON or COM terminals). Doing so may
cause the motor operator to fail to work.
6. If the motor operator is used in conjunction with a shunt trip
device (SH), ensure that voltage supply to the SHT is shut off
after the reset operation ends.
7. To operate multiple motor operators in batch, do not directly
connect their control terminals in series, but through a separate
relay for each. Otherwise, sneak circuits may form and cause the
operators to fail to work.
8. Use noise filters if the control power supply of the motor operator
is shared by peripheral devices. Otherwise, power supply noise
may cause malfunction of the peripheral devices.
Breakers position in tripped state
Breakers position when the breaker has tripped differs depending on
the motor operator being of standard type or being equipped with
the auto reset feature (optional), as shown in the table below:
Cause of trip
Breakers position in tripped state
Manually tripped
TRIP
○ (OFF)＊
SHT/UVT
Standard type With auto reset feature
Overcurrent
＊: The motor operator automatically provides OFF (reset) operation to the breaker.
T2MC25L
Cause of trip
Breakers position in tripped state
Manually tripped
○ (OFF)＊
○ (OFF)＊
SHT/UVT
TRIP
Standard type With auto reset feature
Overcurrent
＊: The motor operator automatically provides OFF (reset) operation to the breaker.
T2MC40 / T2MC80
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