MOLDED-CASE CIRCUIT BREAKERS & EARTH ... - Piti Group

5. Accessories
Internal Accessories
1. Accessories
Table 5-1: Accessories
Internal accessories Function Applicable models Cassette-type of accessories
AL Alarm switch A switch that electrically indicates the trip status of the circuit breaker. NF-C·S·H·U,
●
Auxiliary switch A switch that electrically indicates the ON-OFF status of the circuit breaker.
NV-C·S·H·U
and MB series
●
AX
SHT
UVT
EAL
TBM
MG
PAL
OAL
OFF or ON
Trip
OFF or Trip
ON
Shunt trip
A
Note: (1) Models NV250-SEW/HEW are excluded.
Over current, short circuit
trip or on or off
Ground-fault trip
Undervoltage trip
A
Earth-leakage alarm switch
A
Test button module
This
Insulation switch
The
Pre-alarm module
Overcurrent trip alarm switch
Indicates
2. Switch Operation and Rating
Table 5-2: AL Switch Operation
Circuit breaker status
Table 5-3: AX Switch Operation
Circuit breaker status
Table 5-4: EAL Switch Operation
Circuit breaker status
250A frame or less
400A frame or more
250A frame or less
400A frame or more
Table 5-5: MG Switch Operation
Circuit breaker status
device that electrically trips the circuit breaker from a remote distance.
Permissible working voltages are 70 to 110% of the AC rated voltage or
70 to 125% of the DC rated voltage.
device that automatically trips the circuit breaker if the voltage is lowered.
Working voltages are 70 to 35% of the UVT rated voltage. When the voltage
recovers to 85% or higher, you can reset the device and put into operation.
switch that electrically indicates the trip status of the earth leakage circuit
breaker caused by a ground fault. If 250AF and less, This switch is available
only for models with the vertical lead-wire terminal unit (SLT).
module allows you a remote testing by applying a voltage.
An external sequence common to SHT can be used. (The standard
configuration requires the vertical lead-wire terminal unit (SLT).)
incorporation of this switch enables the measurement of insulation resistance
between the terminals of the load with the circuit breaker being turned OFF.
that the load current exceeds the pre-alarm setting current.
Indicates that the breaker has been tripped by overcurrent or short-circuit current.
AL switch contact
AX switch contact
EAL switch contact
MG switch status
98/ALa (open)
96/ALb (closed)
95/ALc
98/ALa (closed)
96/ALb (open)
95/ALc
14/AXa (open)
12/AXb (closed)
11/AXc
14/AXa (closed)
12/AXb (open)
11/AXc
EALa (open)
EALc
EALa (open)
EALb (closed)
EALc
EALa (closed)
EALc
EALa (closed)
EALb (open)
EALc
Table 5-6: AL·AX·EAL Switch Rating (In case of EAL, 400AF and more)
Switch
type
S
V
*1
X
Note: *1. When DC use polarity must be considered.
Please contact us for applications in the field of smaller current values.
Table 5-7: EAL Switch Rating (250AF and less)
Voltage
(V)
Voltage
(V)
Resistive
load
AC
Resistive
load
Inductive
load
A control power supply (compatible to
100 and 200V AC) is required; see the
diagram on the right showing its wiring.
(The permissible range of voltage of the
control power supply is 80 to 242V AC,
and the power requirement is 10VA.)
NF-C·S·H·U
and MB series
NF-C·S·H·U, (Note 1)
NV-C·S·H·U
and MB series
NV-C·S·H·U –
NV-C·S·H·U –
NV-C·S·H·U –
Electronic Types –
Electronic Types
(SGW, HGW, RGW, UGW)
Current (A)
Inductive
load
Voltage
(V)
DC
Resistive
load
–
Current (A)
Inductive
load
460 – – 250 0.2 0.2
250 3 2 125 0.4 0.4
125 5 3 30 4 3
460
250
125
460
250
125
AC
Current A
5
10
10
5
10
10
200 3 2
100 3 2
2
10
10
2.5
10
10
250
125
30
250
125
30
0.3
0.6
10
5
10
10
●
●
0.3
0.6
Vertical lead-wire
terminal unit
EALa
Indicator lamp
(example)
P2 Control power
supply
P1(EALc)
6
3
6
10
OFF or Trip
MG switch (open)
ON
MG switch (closed)
43