LOW-VOLTAGE AIR CIRCUIT BREAKER(ACB)

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.

Inquiry

Download

Product Description
Specifications
Product Features
More Details

Product Description

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.

Specifications

· Normal installation conditions

>> The circuit breakers DAA all be installed in accordance with the manufacturer’s instrucions.The vertical inclination of the circuit breakers DA All 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)

● Protection characteristics and functions of intelligent overcurrent controller

Protection characteristics of overcurrent controller
1. The setting value Ir (I/In) and error of the controller

Long delay	short delay		Instantaneous		Ground Fault
Ir1	Ir2	error	Ir3	error	Ir4		error
(0.4-1)In	(0.4-15)In	±10%	In~50kA(Inm=2000A) In~75kA(Inm=3200~4000A) In~100kA(Inm=6300A)	±15%	Inm=2000~4000A (0.2~0.8)In Max 1200A, Min 160A	Inm=6300A (0.2-1.0)In	±10%

Note: When there is (required) three-stage protection at the same time, the setting values cannot be crossed.

2. Long-delay overcurrent protection inverse-time operation characteristics I²TL=(1.5lr1)²tL, and the operation time of (1.05~2.0)lr1 is shown in Table 4, and the time error is ±15%.
Note: tL-Long delay 1.5lrs setting time, TL-Long delay operation time.
Note: When there is (required) three-stage protection at the same time, the setting values cannot be crossed.

1.05Ir1	1.3Ir1	1.5Ir1 setting time (s)	15	30	60	120	240	480
＞2h non-operation	＜1h opetation	2.0Ir1 opetation time (s)	8.4	16.9	33.7	67.5	135	270

3. Short delay over-current protection characteristics
Short-time delay over-current protection is definite time limit. If the low multiple is required to be inverse time, the characteristic is: I²Ts=(8Ir1)²ts, ts is the general delay design time;
When the overload current >8Ir, it automatically converts to the definite time characteristic. Its definite time limit characteristic is shown in Table 5. The time limit error is ±15°C.

Product Features

· Normal operation conditions

>> The ambient air temperatures DA All not be over +40℃and below-5℃ and its average over a period of 24h hours does not exceed +35℃.

Altitude

>> The altitude of the site of installation does not exceed 2000m

>> Atmospheric conditions

Its relative humidity does not exceed 50% at a maximum temperature of +40℃,Higher relative humidity 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+25℃.Care should be taken

of moderate condensation which may occur on the surface of products due to variations in temperature.

Videos

More Details

DAB5 series Miniature Circuit breaker(MCB)

DAB7-125 series Miniature Circuit breaker

ALF series Miniature Circuit breaker(MCB)

C45 series Miniature circuit breaker(MCB)

DAB7-63 Nova series Miniature Circuit breaker(MCB)

DAB6 series Miniature Circuit breaker(MCB)

DAB7-63E Miniature Circuit Breaker(MCB) 6kA/10kA

DAM11 Series Moulded-Case Circuit Breaker

DAB7 series Miniature Circuit breaker(MCB)

GV2 mpcb motor protection circuit breaker

DAM3-160 MCCB Molded Case Circuit Breaker

DAM3-250 MCCB Molded Case Circuit Breaker

DAM3-400 MCCB Molded Case Circuit Breaker

DAM3-630 MCCB Molded Case Circuit Breaker

DAM3-1000 MCCB Molded Case Circuit Breaker

DAM3-1600 MCCB Molded Case Circuit Breaker

DAM1 series thermal overload operation Moulded case circuit breaker(Fixed type)

DAM1 series thermal and magnetic adjustable type Moulded case circuit breaker(MCCB)

DAM1 series thermal adjustable type Moulded case circuit breaker(MCCB)

DAM1 series electronic type Moulded case circuit breaker(MCCB)

DAM1L-630 Earth Leakage protection circuit breaker (ELCB)

DAM1L-125 Earth Leakage protection circuit breaker (ELCB)

DAM1L-250 Earth Leakage protection circuit breaker (ELCB)

ALF 6KA RCCB Residual Current Circuit Breaker

DAB7-100 8kA MCB Switch Miniature Circuit Breaker

DAM1L-160 Earth Leakage protection circuit breaker (ELCB)

DABL-63 RCBO 6KA Residual current operated circuit breaker

DABF-63 Nova series Residual current operated circuit breakers with overcurrent protection

DAB7LN-40 series DPN Residual current operation circuit breaker(RCBO)

Arc Fault Dection Devices-AFDD With leakage protection AFDDLE

ID Residual current circuit breaker(RCCB)

DAF360 series Residual current circuit breakers

The Importance of AFDD in the Electrical Industry: Enhancing Safety with Shanghai Dada Electric Co., Ltd. _复制

The Importance of AFDD in the Electrical Industry: Enhancing Safety with Shanghai Dada Electric Co., Ltd.

DAB6 DC photovoltaic DC circuit breakers

DC DAM3PV series moulded case circuit breaker

The difference between contactor and circuit breaker

The difference between contactor and circuit breakerContactor and circuit breaker are electrical equipment, but their functions and applications are different.The functional differential circuit break

LOW-VOLTAGE AIR CIRCUIT BREAKER(ACB)

Product Description

Specifications

Product Features

Videos

More Details

Related Solutions

Power Industry

Building Automation

Industrial Manufacturing

Related Videos

DC solution

Motor protection solution

Electrical protection solution

The difference between contactor and circuit breaker

New motor protection circuit breaker by Shanghai Dada Electrical Co., Ltd.

Understand the importance of molded case circuit breakers: focus on DAM1 series

Where you need an efficient solution, there you need an inquiry

PRODUCTS

SOLUTION

CONTACT US

Inquire