16
17
Accessories
8
8
Accessories
Trip button
Power supply
2 m max.
UVT
UVT
Coil
D1
D2
DT1
DT2
Circuit for voltage
monitoring and
coil energization
Breaker
UVT delay unit
OFF function circuit
UVT circuit diagram
This is the device that automatically trips the breaker when the circuit voltage
drops below the nominal voltage.
There are 4 kinds of tripping time, INST, 0.5 s, 1.5 s, and 3 s. A trip terminal for forced
OFF function is included as standard equipment.
Under voltage trip device (UVT)
2
Rated voltage
(Applicable voltage)
Frequency
(AC)
Operating time
(Time delay)
Pick-up
voltage
Drop-out
voltage
Inrush current and power consumption Steady power
consumption
Operating voltage
48 V DC
(52.8 V max.)
–
INST (0.3 s max.)
0.5 s or more
1.5 s or more
3 s or more
(Note 1)
(Note 2)
(Note 3)
31.2-40.8 V
21.6-33.6 V
48 V
3 A 150 W
20 VA
100-120 V AC/DC
(132 V max.)
50/60 Hz
65-85 V
45-70 V
100 V
2 A 200 VA
120 V
2.4 A 300 VA
200-240 V AC/DC
(264 V max.)
130-170 V
90-140 V
200 V
1 A 200 VA
240 V
1.1 A 280 VA
Note 1) The UVT delay unit is built in the products with the operating time 0.5 s, 1.5 s, or 3 s. (The UVT delay unit requires 30 seconds to charge. The
operating time shortens if the voltage becomes insufficient within 30 seconds after the voltage is started applying to UVT.)
Note 2) The operating time is a guarantee value when it drops from 85% or more of rated voltage.
Note 3) Time delay should be allowed for 0.5 s between applying the voltage to the UVT and closing the breaker.
Note 4) If a remote trip function is required, remove the shorting bar (DT1, DT2) and connect a normally closed switch, rated 10 mA at 30 V DC (Min.
applicable load 15 V DC 1 mA or less) across them.
Note 5) If a forced OFF function is used, the shorting (signal input to DT1 and DT2) should be held for 0.3 second or more.
(Note 4)
(Note 5)
Option
•
The a and b contacts may simultaneously be turned ON instantaneously at the time of switching
contact; Pay attention to the contact state when designing circuits.
•
The chattering time at the time of contact ON-OFF is below 0.025 s.
Voltage (V)
Current (A)
Standard (LAX)
Low capacity type (LVAX)
Resistive
load
Inductive
load
Resistive
load
Inductive
load
AC
(50/60 H
Z
)
250
3
2
–
–
125
5
3
0.1
–
DC
250
0.2
0.2
–
–
125
0.4
0.4
–
–
30
4
3
0.1
–
Contacts max.
5a5b
5a5b
Change-over
sequence
Breaker state
a contact (NO)
b contact (NC)
ON
ON
OFF
OFF
OFF
ON
This is the contact that remotely indicates the ON or OFF status of the breaker.
Auxiliary switch
Standard (LAX) / Low capacity type (LVAX)
4
AC: DC
125
100
60
30
Current (mA)
Voltage (V)
10
5
0.67 1
4
26 50
• LAX (Standard)
• OCR alarm (AL)
AC
100 160
600
DC
Switch rating
Min. load range graph
Option
The door frame improves the appearance, after cutting out the panel door
to install the breaker.
As for panel cut-out dimensions, refer to page 34.
Door frame (DF)
Option
The cover prevents careless manual operation (ON, OFF) of the push buttons.
BC-L can be locked by a padlock. (The padlock should be supplied by the customer.)
For the suitable size of a padlock, refer to page 20.
Push button cover (BC-L)
Option
The breaker is locked in the OFF state with the cylinder lock.
•
Since it is an interlock which only allows the key to be removed when the breaker is locked off,
it can be used for interlocking two or more breakers.
•
Up to 5 types of cylinder locks can be manufactured. Consult us for details.
Cylinder lock (CYL)
5
Option
The number of switching operations of the breaker are shown by a 5
digit counter.
Counter (CNT)
6
Option
The gray manual reset button on the front side of the breaker will stick out
continuously to the output OCR alarm (AL) if the breaker is tripped by the electronic trip
relay. After tripping, the breaker can not be turned ON unless the manual reset button is
pressed for resetting.
OCR alarm (AL)
[MRE: Manual reset type]
3
Standard*
Note 1) This works when tripping occurs in LTD, STD, INST or GF.
Note 2) The alarm continues to output until the manual reset button is pressed.
98
OCR alarm switch
97
Voltage (V)
Current (A)
Resistive load Inductive load
AC
(50/60 Hz)
240
3
2
125
5
3
DC
240
0.2
0.2
125
0.4
0.4
30
4
3
Switch rating
*
Standard if ETR is equipped.
AL in operation
UVT delay unit
(Note 1)
