Air Circuit Breaker Acb High Quality

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 distance380/400V80-120kA660/690V50-85kA>> Perfect intelligent protective functions.The electronic trip unit is a microprocessor based techniques with intelligent protective functions.>> All modular structureModular design for whole series,simple maintenance and adjustment free.>> Double insulation, safe and reliableDouble 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 947-2GB14048.2Technical 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 +40ºCand below-5ºC and its average over a period of 24h hours does not exceed +35ºC.Altitude>> The altitude of the site of installation does not exceed 2000m>> Atmospheric conditionsIts relative humidity does not exceed 50% at a maximum temperature of +40ºC,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+25ºC.Care should be takenof 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 categoryRated operational voltage380/400V660/690VInstallation categoryElectric circuitMain circuitIVIVCoil of under voltage releasePirmary coil power transformerAuxiliary circuitIIIIIIDegree of protectionInstallation methodAccessoriesIP30Normal open mounting IP40Mounted in a compartment of cubicle with additional door framedoor frame to be mounted by userIP54Mounted in a compartment of cubicle with additional door frame and transparent coverdoor frame and transparent cove to be mounted by user· Pollution degree  TypeDAA1-1000DAA1-2000DAA2-3200DAA3-4000DAA4-6300Frame rated10002000320040006300current Inm (A)Number of poles3,43,43,43,43,4Rated current In (A)200,400,630,800,1000400,630,800,1000,1250,1600,20002000,2500,320040005000,6300Icu (kA)O-CO400V4280100100120690V2550656585Ics (kA)O-CO-CO400V30506565100690V2040505080Icw(kA)O-CO400V20506565/80(MCR)85/100(MCR)690V20405050/65(MCR)65/75(MCR)Rated current at N-pole In (A)50%In, 100%InInherent making& breaking time23-32msOperational performance (operations)Electric life500Mechanical life9500Mounting modeFixed with drawableArcing distance(mm)0Intelligent controllerStandard type(M)                    Telecommunication type (H)  /* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1