Wenzhou Kangyu Electrical Co., Ltd.  

Product Name: Free Sample Hot Sale DC 1500V Molded Case Circuit Breaker MCCB Model NO.: KYM3D-250 Certification: ISO9001-2000, CE, UL, CCC Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection) Type: Circuit Breaker Structure: MCCB Arc-extinguishing Medium: Air Breaking Capacity: Low Voltage Circuit Breakers Rated Insulation Voltage Ui(V): 1600 Rated Impulse Withstand Voltage Uimp(Kv): 12 OEM: Yes ODM: Yes Product Name: DC MCCB Rated Insulation Voltage: 1500V Material: High Standard Plastic Copper and Silver Certificate: Ce/ISO9001 Trademark: KAYAL Transport Package: Standard Carton Origin: China HS Code: 1904031930 Product Description DC system-specific circuit breakers are used in rated insulation voltage of 1600V and a rated operating voltage of DC1500V and below, and rated operating currents of 250A and below. C ircuit breakers are mainly used for overload and short circuit protection of distributed power and protection circuits and power equipment in DC systems . U nder normal circumstances can be used as a line of infrequent conversion and DC motor infrequent start.1.Normal conditions of useAmbient air temperature does not exceed the upper limit of +70ºC, the lower limit of not less than -40ºC , 24-hour average does not exceed +35ºC. (Note: Circuit breakers for use in ambient air temperatures above + 70ºC or below -40ºC should be consulted with the manufacturer);The installation site of the altitude does not exceed 2000m (2000m above the need for the corresponding derating)The relative temperature of the atmosphere is not more than 50% at the highest temperature around +40ºC, and can be compared at a lower temperature.High relative humidity (for example, 90% at 20ºC), and the consideration of temperature change on the surface of the product dew.2.Normal installation conditionsInstallation conditions: the general should be vertical installation or horizontal installation;Installation categories: Class III of circuit breaker main circuit, control circuit and auxiliary circuit are class II.Pollution level: Three3.Normal storage and transport conditionsThe temperature limit is not lower than -40ºC,the upper limit does not exceed +70ºC Relative humidity (25ºC) does not exceed 95ºC;The product should be lightly moved during transport,should not be reversed should be acoided violent collision Main technical parametersMain technical parametersframelevel250ARatedworkingvoltageDC500V/DC1000VDC1250V/DC1500VRatedworkingcurrent(A)100/125/140/160/180/200/225/250RatedinsulationvoltageDC160Polenumber2Arcingdistance≤50mmBreakingcapacityIcu=Ics=15kAMechanicallife200Shortcircuitinstantaneoussetting5~10DegreeofprotectionIp20StandardruleGB14048.2IEC60947Description of protectionOverload long delay protectionAmbienttemperatureTestcurrentAppointmenttimeStartingstate+50ºC±2ºC1.05In≥NoactionColdstate1.3In<2hactionHotstateShort-circuit transient protectionAmbienttemperatureTestcurrentAppointmenttimeStartingstate+10ºC~+40ºC4Inor8In≥200msNoaction6Inor12In<200msactionDerated coefficient when ambient temperature changesAmbienttemperature40ºC45ºC50ºC55ºC60ºC65ºCDeratedcoefficient1In0.97In0.93In0.89In0.85In0.82InA comparative relationship between the rated current of a circuit breaker and the cross section ofa linked wireRatedcurrent100A125A140A160A180A200A225A250ACableinterceptingarea35mm²50mm²70mm²95mm²120mm².High altitude derated coefficientAltitude2000m3000m4000m5000mOperatingvoltagederatingcoefficient10.90.80.7Operatingcurrentderatingcoefficient10.960.930.9