• 产品名称:RT303系列

    详细信息  

     

    1.产品型号及含义(Part Number Designation):

     2.引用标准(Standard):

    GB/T13539.1——92 《低压熔断器基本要求》

    GB/T13539.1——92《 low-voltage fuses general requirements》

    GB/T13539.4——92 《低压熔断器基本要求》

    GB/T13539.4——92 《low-voltage fuses general requirements》

    3.环保(Environmental Conservation):

    产品和包装材料的有害物质控制符合欧盟和中国ROHS指令。

    The products and its packaging are compliant with ROHS.

                                      

    4.一般使用条件(Conditions For Operation In Service):

    如果使用条件与如下描述不同或存在其它特殊工作条件,请咨询我公司研发部门。

    If the fuses are to be used under conditions different from the following, please consult our Research & Development department.

    4.1空气温度 (Ambient air temperature-Ta)

    4.1.1  -5℃40℃

    4.1.2  周围空气温度24h的平均值不超过35℃

    Its mean value measured over a period of 24 h does not exceed 35 ℃.

    4.1.3.温度降额(Correction factor of In -Ta.):

    环境温度

    Ta

    -20℃

    0℃

    20℃

    40℃

    60℃

    In变化幅度

    Correction factor

    112%

    109%

    102%

    95%

    84%

    4.2 安装地点的海拔高度不超过2000m

    The altitude of the site of installation of the fuses does not exceed 2000m above sea level.

    4.3 大气条件(Atmospheric conditions)

    4.3.1 空气干净,相对湿度在最高温度为40℃时不超过50%。

    The air is clean. Its relative humidity does not exceed 50 % at the maximum temperature of 40 ℃.

    4.3.2 在较低温度下可以有较高的相对湿度,例如,在20%下,相对湿度可达90%。

    Higher relative humidifies are permitted at lower temperatures, e.g. 90 % at 20 ℃.

    4.4 安装条件(Conditions of installation)

    a. 直接焊接在PCB上。熔断器可垂直、水平或倾斜安装。

    Weld the fuse on PCB directly. The fuse can be installed vertically, horizontally, or gradiently.

    b.工作场所如果存在显著震动和冲击,请咨询。

    If the fuse is likely to be exposed in service to abnormal vibrations or shocks, please consult  us.

    c.焊接温度要求在260℃以下,否则有损坏熔断电阻器的危险。

    The temperature of jointing is below 260℃, otherwise, the fuse maybe be damaged.

    d.一般情况下取不大于90%额定电流较为适宜。

    It is convenient that the current is under 90% of the rated current.

    e.熔断电阻器工作时不可触摸,否则有人身伤害的危险。

    Do not touch the fuse when it is in working condition.

    f.周围无易燃易爆物体。

    There is no flammability all around.

    5.电压规格(Voltage):

    额定电压:250V AC /65V DC

    Rated Voltage:250V AC /65V DC

    6.产品尺寸 (Dimensions):

     

    序号

    No.

    额定电流

    Rated

    Current

    (A)

    Φd

    (mm)

    ΦD

    (mm)

    长度(mm)

    Length

    标识色

    Logo color

    备注

    Remarks

    1

    20

    0.38

    1.8±0.3

    42 / 30

    金色

    Golden

    2

    25

    0.43

    1.8±0.3

    42 / 30

    绿色

    Green

    3

    28

    0.44

    1.8±0.3

    42 / 30

    黄色

    Yellow

    4

    32

    0.47

    1.8±0.3

    42 / 30

    橙色

    Orange

    5

    35

    0.49

    1.8±0.3

    42 / 30

    黑色

    Black

    6

    40

    0.55

    1.8±0.3

    42 / 30

    棕色

    Brown

    7

    50

    0.64

    1.6±0.3

    42 / 30

    红色

    Red

    8

    63

    0.80

    1.6±0.3

    42 / 30

    白色

    White

    注(Remarks):

    1.出厂长度(mm) 提供42mm30mm两种规格,用户自行选择。

    Provide Length (mm) either standard 42mm or 30mm for user to choose.

        2.标识色涂覆于M效应点处,涂覆宽度6-8mm

    The logo color coating only on the M-point effect, coating the width of 6-8mm.

    7.约定时间、约定电流(Conventional time&Conventional current):

    额定电流(In)

    Rated Current

    约定时间

    Conventional time

    约定电流

    Conventional current

    Inf=1.3×In

    If=1.6×In

    If=5×In

    20A63A

    1S

    <1S熔断

    <1s fusing

    1h

    >1h不熔断

    >1h non- fusing

    <1h熔断

    <1h fusing

    注(Remarks):

    有效长度会影响电流特性,丝状熔断电阻器有效长度为16mm,则额定电流为标称值,有效长度大于16mm,实际有效额定电流会变小,反之,实际额定电流变大。

    不建议有效尺寸小于12 mm情况下使用。

    The fuse rated current is the nominal value if efficient length is 16mm. The reality rated current should be altered if efficient length of the fuse is different from 16mm. The efficient length is beyond 16mm , the rated current is less than the nominal value .If it is less than 16mm, the rating current is greater than the nominal value.

    It is out of place that the efficient length is less than 12mm.

    In:额定电流,单位A。        Rated, current

    h:时间单位,小时。          Time, hour.

    s:时间单位,秒。            Time, seconds.

    Inf: 约定不熔断电流,单位A。   Conventional non-fusing current

    If: 约定熔断电流,单位A。      Conventional fusing current

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