DAA Series Low Voltage
Air Circuit Breaker
The air circuit breaker is perfectly suited for circuits operating at AC 50Hz/60Hz with a rated service voltage of 400V or 690V, and a rated service current up to 6300A. Primarily, it is utilized to distribute electric energy while providing comprehensive protection for circuits and electric equipment against overload, under-voltage, short-circuit, and single-phase earthing faults.
Featuring intelligent and selective protection functions, this breaker enhances power supply reliability, preventing unnecessary power failures. It is ideal for use in power stations, factories, mines (for 690V), and modern high-rise buildings, especially within the distribution systems of intelligent buildings.
.
· Advantages for the Design and Manufacture of LV Assemblies
>>
High short-circuit breaking capacity
,
Non
ionization Distance
380/400V: 80-120kA
660/690V: 50-85kA
>>
Perfect Intelligent Protective Functions
The electronic trip unit employs
a
microprocessor-based
technology with advanced intelligent protection functions.
>>
All
Modular Str
uc
ture
Modular design for the entire series
,
facilitates
simple
and
maintenance-free adjustment.
>>
Double Insulation
,
Safe and Rel
i
able
Double insulation from the circuit breaker's front face ensures
safe and reliable operation.
,
operated safely and reliably.
>>
Compact
Design
,
Lightweight Construction
>>
Comprehensive
Range of Accessories. Common for
the entire 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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