Air Circuit Breaker
3. Product structure
Secondary connecting part
Shunt release
Intelligent controller
Energy storage & release indicator
Operating mechanism
Closing electromagnet
Energy storage handle
Making button
Motor-driven energy storage mechanism
Breaking button
Breaking/making indicator
Under voltage release
Zero arcover hood
Name plate
Energy storage handle
Secondary connecting part
Making button
Energy storage & release indicator
Fault-breaking indicator reset button
Breaking button
Breaking/Making indicator
Intelligent controller
NA8G
Air Circuit Breaker
P-002
Body structure
No. of poles:
3:3-pole
4:4-pole
Rated current:
Mode of installation:
F:Fixed type
D:Draweout type
Mode of operation:
M:Manual
P: Power-driven
2.6 Type designation
NA8 G -
□
-
□□
/
□
-
□
-
□
-
□
-
□
Voltage of secondary circuit
AC230V, AC400V
DC220V, DC110V
Wiring of main circuit:
H:Horizontal wiring of main circuit
V:Vertical wiring of main circuit
Intelligent controller:
M: Standard type
H: Multifunctional type
Frame size
rated
current
3200A
6300A
1600A
Frame size rated current:
1600A, 3200A, 4000A 6300A
,
Design sequence number
ACB
Company code
Improved product code
Rated current
1600A
2000A
2500A
3200A
4000A
5000A
6300A
400A
630A
800A
1000A
1250A
1600A
4000A
2500A
3200A
4000A
1. General
NA8G Air Circuit Breaker
2. Operating conditions
1.1 Application scope
With rated current from 200A to 6300A, and rated service
voltage of AC 415V or 690V, NA8G series air circuit breaker is
mainly used in the distribution network with the circuit of AC
50HZ/60HZ to distribute electric energy and protect circuits
and electric equipment against over-load, under-voltage,
short- circuit, single-phase earthing fault.
Having art-oriented appearance, high breaking capacity, zero
arcover and varities of intellectualized protection functions, the
breaker can be used for selective protection with accurate
action, no unnecessary power cut, and better power supply
reliability.
That breaker can be widely used for power stations, factories,
mines and modern tall buildings, especially the distribution
system in the intelligent building, and also widely used in
green projects such as wind and solar power generation.
1.2 Standard : IEC/EN 60947-2
.
2.1 Temperature condition:
-5℃~40℃; the average value within 24h shall not
exceed
+35℃ (special situation excluded);
2.2 Altitude:≤2000m;
2.3 Pollution grade: Grade 3;
2.4 Air conditions:
At mounting site, relative humidity not exceed 50% at the max
temperature of +40℃, higher relative
humidity is allowable
under lower temperature, RH could be 90% at +20℃, special
measures should be taken to occurrence of dews;
2.5 Note: Without the intelligent controller,
the breaker functions as a switch-disconnector.
NA8G
P-001
Summary of Contents for NA1
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