DW45 Air Circuit Breaker

·Introduction 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 structure Modular design for whole series,simple maintenance and adjustment free. >> Double insulation, safe and reliable 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

 

 

·Types and meanings

DAA  -1/2

Technical note The model number of those product is DW 45 used in low-voltage electrical Industry.

 

· 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.   · 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)