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  • Scope of Application

    DZ15LE Molded Case Circuit Breaker (pump protector, 40A/100A Circuit Breaker), for circuits of AC 50Hz, rated voltage of 220V or 380V, rated current of 100A, for protecting residual current, pump protector can also prevent the fire hazard caused by ground fault current from the damaged device insulation. And pump protector can provide protection of overload and short-circuit in the circuits and infrequent conversion of the circuits, transparent case residual current operated circuit breaker derived from the series, its cover is made of polycarbonate material with new type, high temperature resistant and high strength. It can judge on or off of the contact state directly.
    DZ15LE MCCB (pump protector, 40A/100A Circuit Breaker) meets the standards: GB14048.2, IEC60947-20.

    Model and meaning

    Note*: Type-A N pole is not equipped with overcurrent trip element, and is always connected to N pole, not with the other three together on-off(be conventional products, A can be omitted); Type-B N pole is not installed with overcurrent trip element, and N pole is on or off with the other three together.

    Normal operating conditions and installation conditions

    ■ The altitude of the installation site is not more than 2000m
    ■ Ambient air temperature: -5℃~40℃, and average temperature in 24h is below +35℃.
    ■ The air relative humidity in the highest temperature + 40℃ for not more than 50%; In the low temperature can have higher relative humidity. The maximum average relative humidity is 90%, while the average monthly minimum temperature is +25℃, and consider the temperature changes in product on the surface of the gel.
    ■ DZ15 pump protector is installed in the place without impact vibration and invasion of rain and snow, the upper terminal connects with the power side, the lower terminal connects with the load side, and the inclination of the vertical plane is not more than 5°.
    ■ Installation category: Ⅲ.
    ■ Pollution degree: 3.
    ■ The external magnetic field in the vicinity of the installation site does not exceed 5 times the geomagnetic field in any direction.

    The main parameters and technical performance (40A/100A Circuit Breaker)

    Model Rated voltage
    (Un V)

    Frame rated

    current(A)

    Pole Rated current
    (A)

    Rated limit short

    circuit analysis capability
    Icu kA

    Rated residual

    operating current
    I△n(mA)

    Rated residual

    non-operating current
    I△no(mA)

    Flashover distance
    (mm)
    DZ15LE-40 220 40 2 20,32,40 3 30 15 ≤50
    5 25
    380

    3

    4

    75 40
    100 50
    DZ15LE-100 220 100 2 63,80,100 5 30 15 ≤70
    50 25
    380

    3

    4

    63,100 75 40
    100 50
    300 150

    Residual Current Breaking Time of Residual Current operated Circuit Breaker

    Residual Current I△n 2I△n 5I△na 10I△nb
    Max breaking time(s) 0.1 0.1 0.04 0.04
    a. For residual current operated circuit-breakers of IΔn≤0.03, 5IΔn can be replaced by 0.25A.
    b. When using 0.25A according to Note a , then 10I △ n is 0.5A.

    Operating Cycles and Experiment Parameters of Residual Current operated Circuit Breaker

    Protection category On-load operating conditions Frame rated current(A) Operating cycles index Operating cycles index/h
    Making Breaking cosΦ On-load No-load Total
    Motor Ue 6In 0.17Ue 6In 0.35 40 100 1500 8500 10000 120/h
    Distribution Ue In Ue In 0.8 40 100 1500 8500 10000 120/h

    Protective Characteristics of Residual Current operated Circuit Breakers Overcurrent Release for Distribution Protection

    Ambient air temperature Test current / Rated current Tripping time Initial state
    In>63A In≤63A
    +30±2℃ 1.05 Non tripping within 2h Non tripping witnin 1h Cold
    1.30 Tripping witnin 2h Tripping witnin 1h Hot

    Protective Characteristics of Residual Current operated Circuit Breakers Overcurrent Release for Motor Protection

    Ambient air temperature Test current / Rated current Tripping time Initial state
    In>63A In≤63A
    +20±2℃ 1.0 Non tripping within 2h Non tripping witnin 1h Cold
    1.20 Tripping witnin 2h Tripping witnin 1h Hot

    Current setting value of instantaneous overcurrent release:
    Current setting value of residual current operated circuit breakers instantaneous overcurrent release for distribution is 10In, and current setting value of residual current operated circuit breakers instantaneous overcurrent release for motor protection is 12In, its accuracy is ± 20%.

    Protection characteristic curve of Residual current operated circuit breaker overcurrent release as follows

    Structure and working principle

    This series residual current operated circuit breakers are electronic residual current operated circuit breakers, mainly consists of the zero-sequence current transformer, electronic control leakage release and circuit breaker with overload and short-circuit protection.
    Working principle: When there is residual current in the protected circuit, as long as the residual current reaches the operating current value, the secondary winding of the zero-sequence transformer outputs a signal, and makes the residual current operated circuit breaker act by the leakage release, thus cutting off the power supply to provide protection of residual current and electric shock . Schematic diagram shown in Figure 1.
    When there is overload or short-circuit in the protected circuit, the hydraulic release complete the time delay or instantaneous tripping action to make the residual current operated circuit breaker operate, thus cutting off the power supply to provide protection of overload or short-circuit.

    Outline and installation dimensions

    Frame rated current(A) Pole Outline dimensions (mm)
    A B C D E F G H I J
    40 2 53±1.75 213±2.3 85±1.75 73.5±1.5 24max 26max 43max 50max 10max 42max
    3 78±1.75 221±2.3 88±1.75 73.5±1.5 24max 51max 47max 50max 10max 46max
    4 103±1.75 221±2.3 88±1.75 73.5±1.5 24max 76max 47max 50max 10max 46max
    100 2 66±1.75 230±2. 95±1.75 80±1 27max 32max 56max 54max 14max 53max
    3 96±1.75 251±2.6 95±1.75 80±1 27max 62max 56max 54max 13max 59max
    4 126±2.0 251±2.6 95±1.75 80±1 27max 92max 56max 54max 13max 59max
    Frame rated current(A) Pole Installation dimensions(mm)
    a b c Mounting hole Φd Mounting screw
    40 2 - 180±0.5 Φ13max 2×Φ4.5 M4X35
    3 25±0.26 180±0.5 Φ13max 4×Φ4.5 M4X35
    4 50±0.31 180±0.5 Φ13max 4×Φ4.5 M4X35
    100 2 - 188±0.5 Φ13max 2×Φ5 M4X35
    3 30±0.26 210±0.57 Φ13max 4×Φ5 M4X35
    4 60±0.37 210±0.57 Φ13max 4×Φ5 M4X35
    Rated current(A) 6 10 16 20 25 32 40 50 63 80 100
    Copper wire cross-sectional area(mm²) 1.0 1.5 2.5 2.5 4 6 10 10 16 25 35

    Keywords: 40a Circuit Breaker , pump protector

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