DAA series Low Voltage
Air circuit breaker
air circuit breaker is suitable for the circuit of AC 50Hz/60Hz with rated service voltage 400V, 690V and rated service current up to 6300A.It is mainly used to distribute electric energy and protect circuits and electric equipment against over-load, under-voltage, short-circuit and single-phase earthing fault.
With intelligentized and selective protection functions, the breaker can improve the reliability of power supply, and avoid unnecessary power failure.The breaker is applicable for power stations, factories, mines (for 690V) and modern high- buildings, especially for the distribution system of intelligentized building
.
·Advantages provided for design and manufacture of LV assemblies
>>
With high short-circuit breaking capacity
,
Non
ionization distance
380/400V80-120kA
660/690V50-85kA
>>
Perfect intelligent protective functions.
The electronic trip unit is
a
microprocessor based
techniques with intelligent protective functions.
>>
All
modular str
uc
ture
Modular design for whole series
,
simple
maintenance and adj
u
stment free.
>>
Double insulation
,
safe and rel
i
able
Double insulation from the front face of the circuit
breakers
,
operated safely and reliably.
>>
Compact
design
,
Light in weight
>>
Complete
range of accessories.Common for
whole series
>>
Compliance with International and national
standards.
IEC 947-2
GB14048.2
Tech
n
ica
l
note The model
n
um
be
r
o
f tho
s
e product is DW 45 used in low-v
o
ltage electr
ica
l
Indust
r
y
.
· Normal operation conditions
>>
The ambient air temperatures DA All not b
e
over
+40ºCand
below-5ºC
and its average over a period of 24h hours does
not
exce
ed
+35ºC.
Altitude
>>
The alt
i
tude of the site of installation does not exceed
2000m
>>
Atmospheric conditions
Its relative humid
it
y does not exceed 50%
at a maximum
temperature of
+40ºC
,
Higher
re
lative humidit
y
maybe
permitted at lower temperature.The mean maximum value
of the most humidity month is 90%
,
and the mean lowest
temperature of this month is+25ºC.Care should be taken
o
f
moderate condensation which may oc
c
ur on the surface
of products due to variations in temperature.
· Normal insta ll ation cond i tions
>>
The circuit breakers DAA all be installed in accordance with the manufacturer
'
s instrucions.
The vertical in
cli
nation of the circuit breakers DA Al
l
not exceed 5
°
· Installation category
| Rated operational voltage |
380/400V |
660/690V |
| Installation category |
| Electric circuit |
| Main circuit |
IV |
IV |
| Coil of under voltage release |
| Pirmary coil power transformer |
| Auxiliary circuit |
III |
III |
| Degree of protection |
Installation method |
Accessories |
| IP30 |
Normal open mounting |
|
| IP40 |
Mounted in a compartment of cubicle with additional door frame |
door frame to be mounted by user |
| IP54 |
Mounted in a compartment of cubicle with additional door frame and transparent cover |
door frame and transparent cove to be mounted by user |
· Pollution degree
| Type |
DAA1-1000 |
DAA1-2000 |
DAA2-3200 |
DAA3-4000 |
DAA4-6300 |
| Frame rated |
1000 |
2000 |
3200 |
4000 |
6300 |
| current Inm (A) |
| Number of poles |
3,4 |
3,4 |
3,4 |
3,4 |
3,4 |
| Rated current In (A) |
200,400,630,800,1000 |
400,630,800,1000,1250,1600,2000 |
2000,2500,3200 |
4000 |
5000,6300 |
|
|
|
|
| Icu (kA)O-CO |
400V |
42 |
80 |
100 |
100 |
120 |
| 690V |
25 |
50 |
65 |
65 |
85 |
| Ics (kA)O-CO-CO |
400V |
30 |
50 |
65 |
65 |
100 |
| 690V |
20 |
40 |
50 |
50 |
80 |
| Icw(kA)O-CO |
400V |
20 |
50 |
65 |
65/80(MCR) |
85/100(MCR) |
| 690V |
20 |
40 |
50 |
50/65(MCR) |
65/75(MCR) |
| Rated current at N-pole In (A) |
50%In, 100%In |
| Inherent making& breaking time |
23-32ms |
|
|
| Operational performance (operations) |
Electric life |
500 |
|
| Mechanical life |
9500 |
| Mounting mode |
Fixed with drawable |
|
| Arcing distance(mm) |
0 |
|
| Intelligent controller |
Standard type(M) Telecommunication type (H) |
|
Audited Supplier 
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