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E-T-A UL 1077 & UL 489 4230-T Miniature Circuit Breakers

The 4230 is a thermal-magnetic Miniature Circuit Breaker (MCB) in an industry standard footprint in accordance with DIN 43880. It can be used to protect motors, generators, and transformers, in addition to industrial control systems and machines.

  • In-Stock and Reay to Ship - the 4230-T is in stock and ready to ship to you directly from Master Electronics
  • Fit for Global Use - Do you install equipment globally? The 4230-T's conformity with UL1077, UL 489, and IEC 60947-2 standards, make it ideal for global use
  • Streamlined Inventory - Looking for ways to reduce inventory investment and complexity? You can use the 4230-T in both AC and DC applications.
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38 Products

    4230-T120-K0CE-5A
    Data Sheet
    4230-T120-K0CE-5A E-T-A Engineering Technology
    Thermal-magnetic Circuit Breaker - DIN Mount - 5A - 2 Pole - Screw Terminals - IEC/EN 60947-2(TÜV)/UL1077
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    In Stock: 79
    Ships Immediately
    MANUFACTURER STOCK 42
    can ship 12/5/25
    1
    $83.074
    10
    $50.441
    25
    $46.598
    50
    $46.367
    100
    $45.127
    4230-T120-K0CU-20A
    Data Sheet
    4230-T120-K0CU-20A E-T-A Engineering Technology
    Thermal-magnetic Circuit Breaker - DIN Mount - 20A - 2 Pole - Screw Terminals - UL489/IEC/EN60947-2(TÜV)
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    MANUFACTURER STOCK 17
    can ship 12/5/25
    1
    $69.047
    5
    $61.604
    10
    $59.767
    25
    $58.036
    50
    $54.852
    4230-T120-K0CU-25A
    Data Sheet
    4230-T120-K0CU-25A E-T-A Engineering Technology
    Thermal-magnetic Circuit Breaker - DIN Mount - 25A - 2 Pole - Screw Terminals - UL489/IEC/EN60947-2(TÜV)
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    In Stock: 1
    Ships Immediately
    MANUFACTURER STOCK 7
    can ship 12/5/25
    1
    $50.120
    5
    $48.435
    10
    $47.716
    25
    $46.766
    50
    $46.031
    4230-T120-K0CU-35A
    Data Sheet
    4230-T120-K0CU-35A E-T-A Engineering Technology
    Thermal-magnetic Circuit Breaker - DIN Mount - 35A - 2 Pole - Screw Terminals - UL489/IEC/EN60947-2(TÜV)
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    26 Weeks
    1
    $69.047
    5
    $61.604
    10
    $59.767
    25
    $58.036
    50
    $54.852
    4230-T120-K0CU-5A
    Data Sheet
    4230-T120-K0CU-5A E-T-A Engineering Technology
    Thermal-magnetic Circuit Breaker - DIN Mount - 5A - 2 Pole - Screw Terminals - UL489/IEC/EN60947-2(TÜV)
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    MANUFACTURER STOCK 25
    can ship 12/5/25
    1
    $69.047
    5
    $61.604
    10
    $59.767
    25
    $58.036
    50
    $54.852
    4230-T120-K0DE-10A
    Data Sheet
    4230-T120-K0DE-10A E-T-A Engineering Technology
    Thermal-magnetic Circuit Breaker - DIN Mount - 10A - 2 Pole - Screw Terminals - IEC/EN 60947-2(TÜV)/UL1077
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    In Stock: 112
    Ships Immediately
    MANUFACTURER STOCK 104
    can ship 12/5/25
    1
    $29.263
    10
    $26.645
    25
    $25.619
    50
    $24.822
    100
    $24.041
    4230-T130-K0CE-10A
    Data Sheet
    4230-T130-K0CE-10A E-T-A Engineering Technology
    Thermal-magnetic Circuit Breaker - DIN Mount - 10A - 3 Pole - Screw Terminals - IEC/EN 60947-2(TÜV)/UL1077
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    In Stock: 9
    Ships Immediately
    MANUFACTURER STOCK 38
    can ship 12/5/25
    1
    $57.990
    5
    $48.756
    25
    $48.037
    50
    $38.819
    100
    $35.771
    4230-T130-K0CE-15A
    Data Sheet
    4230-T130-K0CE-15A E-T-A Engineering Technology
    Thermal-magnetic Circuit Breaker - DIN Mount - 15A - 3 Pole - Screw Terminals - IEC/EN 60947-2(TÜV)/UL1077
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    In Stock: 130
    Ships Immediately
    1
    $64.728
    5
    $49.813
    25
    $47.103
    50
    $38.819
    100
    $35.771
    4230-T130-K0CE-30A
    Data Sheet
    4230-T130-K0CE-30A E-T-A Engineering Technology
    Thermal-magnetic Circuit Breaker - DIN Mount - 30A - 3 Pole - Screw Terminals - IEC/EN 60947-2(TÜV)/UL1077
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    In Stock: 131
    Ships Immediately
    MANUFACTURER STOCK 58
    can ship 12/5/25
    1
    $104.634
    5
    $58.481
    25
    $51.972
    50
    $43.397
    100
    $40.120
    4230-T130-K0CE-35A
    Data Sheet
    4230-T130-K0CE-35A E-T-A Engineering Technology
    Thermal-magnetic Circuit Breaker - DIN Mount - 35A - 3 Pole - Screw Terminals - IEC/EN 60947-2(TÜV)/UL1077
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    In Stock: 168
    Ships Immediately
    MANUFACTURER STOCK 55
    can ship 12/5/25
    1
    $64.728
    5
    $49.813
    25
    $47.103
    50
    $38.819
    100
    $35.771