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  • Scope of Application

    TXD7-63 Residual Current Circuit Breakers are new earth leakage Circuit Breakers which have been innovated, researched and developed by the company using rich production experience and international cutting-edge technology. The earth leakage Circuit Breakers have protection function of overload, short circuit, residual leakage current action, current limiting and other functions, and with international high-tech products. Products with high operating performance are suitable for the line with AC 50/60Hz, rated voltage of single-pole and two-wire, two poles for, 230V, three poles, four poles for 400V and rated current of 63A. When the leakage current from the circuit equipment or grid exceeds the specified value, residual current operated circuit breaker can cut off trouble power quickly in a very short time to protect personal and electrical equipment. The earth leakage circuit breaker can protect overload and short-circuit of the circuit or motor, it can also be converted and started infrequently under normal circumstances. The earth leakage circuit breakers meet the standards of GB16917.1-2003 and IEC61009-1, the product obtains design the national patent certificate.

    Model and meaning

    Structure characteristics

    TXD7-63 series new leakage circuit breakers (earth leakage circuit breaker) is designed based on the leakage tripping device accessories and TXB7N-63 circuit breaker with a reduced design, 2P / 3P / 4P leakage are narrower than ordinary DZ47LE circuit breaker, at the same time it maintain the same current characteristics as the TXB7N, its mechanical assembly can be completed by the enterprise in the factory, or in the field. Leakage trip characteristic parameters set by the factory, the user can not adjust, can not open the leakage release to avoid affecting performance. Frame rated current of leakage release is 63A, can be connected to the wire of 25mm².
    The earth leakage circuit breaker has an indication device which is used for indicating the leakage action. The leakage circuit breaker can be closed only after the indication device has been reset. And it has the test device with a self-reset button, press the button, the internal circuit generates an analog residual current to make circuit breaker break. The test device shall be tested periodically, once a month.

    Normal operating conditions and installation conditions

    ◆ Ambient air temperature: -5℃~40℃, and average temperature in 24h below +35℃.
    ◆ Altitude: The altitude of installation site does not exceed 2000m.
    ◆ Atmospheric conditions: The location of the air relative humidity in the highest temperature + 40℃ for not more than 50%; In the low temperature can have higher relative humidity. For example, + 20℃ for 90% .
    ◆ Installation categories: Ⅱ, Ⅲ level.
    ◆ pollution level: 2.
    ◆ Installation: mounted on the TH35-7 steel rail.
    ◆ Installation conditions: The external magnetic field in the vicinity of the circuit breaker installation site does not exceed 5 times of the geomagnetic field in any direction; Residual current operated circuit breakers should be installed vertically; Handle-up means power-on; Installation site without significant impact and vibration.
    ◆ Wiring method: tighten the wiring with screws.

    Main parameters and technical performance

    ◆ Rated current (In): 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A
    ◆ Rated residual operated current I△n: 30mA, 50mA, 100mA, 300mA
    ◆ According to the poles and current loop:
      ◇ 2P: two-poles residual current operated circuit breaker;
      ◇ 3P: three-poles residual current operated circuit breaker;
      ◇ 4P: four-poles residual current operated circuit breaker;
    ◆ According to the characteristics of instantaneous tripping: C type (5 ~ 10) In, D type (10 ~ 16) In.
    ◆ Rated voltage Un (V): two-poles for 230V; three-poles, four poles for 400V;
    ◆ Rated short-circuit capacity Icn (A): 6000 (C6 ~ C40); 4500 (C50, C63, D6 ~ D63);
    ◆ Rated residual making and breaking capacity 6000 I △m (A);
    ◆Rated residual non-operating current I△no; 0.5I△n;

    Main technical parameters

    Rated voltage
    Ue(V)
    Pole(P) Frame rated
    current
    lnm(A)
    Rated current
    (A)
    Rated leakage
    action current
    (mA)
    Rated leakage
    non-operating
    current(mA)
    Rated leakage
    breaking time
    (s)
    Rated short-
    circuit breaking
    capacitylcn(A)
    230 2 32 6、10、16、
    20、25、32
    30 ; 50 15 ; 25 ≤0.1 6000
    400 3
    4
    230 2 50 6、10、16、
    20、25、32、
    40、50、63
    30 ; 50 15 ; 25 ≤0.1 4000
    400 3
    4
    Test current Rated current Set time Prospective
    result
    Initial state Remark
    1.13ln All value t≥1h Non tripping Cold The current rise steadily to
    a fixed value within 5S
    1.45ln All value t<1h Tripping Hot
    2.55ln All value 1<t<60s Tripping Cold Close the auxiliary switch to turn on the power
    5ln All value t≥0.1s Non tripping Cold Close the auxiliary switch to turn on the power
    10ln All value t<0.1s Tripping Cold Close the auxiliary switch to turn on the power

    Outline and installation dimensions


    Keywords: earth leakage Circuit Breakers

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