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NB1 Miniature Circuit Breaker

Short Description:

AC MCB1 (Mini circuit breaker)  is used in lighting distribution system or motor distribution system for protecting overload and short circuit in the system. The product is neoteric in structure, light in weight, reliable and excellet in performance. Its frame and parts adopt plastics of high fire resistant and shockproof. The product, with long life, is mainly used in single pole 277V and Multi-Pole up to 480V circuit for overload and short circuit protection, as well as for unfrequently switching electric equipment and lighting circuit in normal case. 


  • FOB Price: US $5 - 499 / Piece
  • Supply Ability: 5000 Pcs per Month
  • Payment Terms: L/C, D/P, T/T, Paypal
  • Control voltage: 24V 48V 72V 110V 230V 240V 380V 440V 480V
  • Brand : Nofuel
  • Product Detail

    Product Tags

    DC MCB1(Mini circuit breaker)supplementary protectors are designed to provide over current protection within appliances or electrical equipment, where a branch circuit protection is already provided or not required. Devices are designed for direct current (DC) control circuit applications.It’s din rail mounted type and Current form 1A to 63A and voltage 110VDC ,125VDC to 250VDC 440V DC .

    Features:

    • B C trip curves models available for general

    use and DC applications

    • D trip curve models available for high starting

    current applications such as motor starting

    • Current ratings up to 63A

    • Maximum 480VAC (multi-pole), 277VAC (single-pole)

    • 5000 A Interrupt Rating

    • DIN rail mount chassis

    • Captive terminal screws won’t fall out

    • Mechanical life: 20000 times.

    • Electric life: 4000 times

    • Captive terminal screws won’t fall out

    Tripping curves

    B curve

    When the short-circuit currents are weak (generators, long cables).

    Power circuit:

    ratings: 1 to 63 A set at 30 °C

    tripping curve: the magnetic trip units operate between 3 and 5 In.

    C curve

    Cables feeding conventional loads.

    Power circuit:

    ratings: 0.5 to 63 A set at 30 °C

    tripping curve: the magnetic trip units operate between 5 and 10 In.

    D curve

    Loads with high inrush currents (motors, transformers).

    Power circuit:

    ratings: 0.5 to 63 A set at 40 °C

    tripping curve: the magnetic trip units operate between 10 and 14 In.

    Max Voltage Rated Amps 1 Pole 2 Pole 3 Pole 4 Pole
    B Curve 5KA
    Single-pole: 277VAC
    110VDC
    Multi-pole: 480VAC
    125VDC
    1 MCB1-B1-1P MCB1-B1-2P MCB1-B1-3P MCB1-B1-4P
    2 MCB1-B2-1P MCB1-B2-2P MCB1-B2-3P MCB1-B2-4P
    3 MCB1-B3-1P MCB1-B3-2P MCB1-B3-3P MCB1-B3-4P
    4 MCB1-B4-1P MCB1-B4-2P MCB1-B4-3P MCB1-B4-4P
    6 MCB1-B6-1P MCB1-B6-2P MCB1-B6-3P MCB1-B6-4P
    10 MCB1-B10-1P MCB1-B10-2P MCB1-B10-3P MCB1-B10-4P
    16 MCB1-B16-1P MCB1-B16-2P MCB1-B16-3P MCB1-B16-4P
    20 MCB1-B20-1P MCB1-B20-2P MCB1-B20-3P MCB1-B20-4P
    25 MCB1-B25-1P MCB1-B25-2P MCB1-B25-3P MCB1-B25-4P
    32 MCB1-B32-1P MCB1-B32-2P MCB1-B32-3P MCB1-B32-4P
    40 MCB1-B40-1P MCB1-B40-2P MCB1-B40-3P MCB1-B40-4P
    50 MCB1-B50-1P MCB1-B50-2P MCB1-B50-3P MCB1-B50-4P
    63 MCB1-B63-1P MCB1-B63-2P MCB1-B63-3P MCB1-B63-4P
               
    Max Voltage Rated Amps 1 Pole 2 Pole 3 Pole 4 Pole
    C Curve 5KA
    Single-pole: 277VAC
    110VDC
    Multi-pole: 480VAC
    125VDC
    1 MCB1-C1-1P MCB1-C1-2P MCB1-C1-3P MCB1-C1-4P
    2 MCB1-C2-1P MCB1-C2-2P MCB1-C2-3P MCB1-C2-4P
    3 MCB1-C3-1P MCB1-C3-2P MCB1-C3-3P MCB1-C3-4P
    4 MCB1-C4-1P MCB1-C4-2P MCB1-C4-3P MCB1-C4-4P
    6 MCB1-C6-1P MCB1-C6-2P MCB1-C6-3P MCB1-C6-4P
    10 MCB1-C10-1P MCB1-C10-2P MCB1-C10-3P MCB1-C10-4P
    16 MCB1-C16-1P MCB1-C16-2P MCB1-C16-3P MCB1-C16-4P
    20 MCB1-C20-1P MCB1-C20-2P MCB1-C20-3P MCB1-C20-4P
    25 MCB1-C25-1P MCB1-C25-2P MCB1-C25-3P MCB1-C25-4P
    32 MCB1-C32-1P MCB1-C32-2P MCB1-C32-3P MCB1-C32-4P
    40 MCB1-C40-1P MCB1-C40-2P MCB1-C40-3P MCB1-C40-4P
    50 MCB1-C50-1P MCB1-C50-2P MCB1-C50-3P MCB1-C50-4P
    63 MCB1-C63-1P MCB1-C63-2P MCB1-C63-3P MCB1-C63-4P
               
    Max Voltage Rated Amps 1 Pole 2 Pole 3 Pole 4 Pole
    D Curve 5KA
    Single-pole: 277VAC
    110VDC
    Multi-pole: 480VAC
    125VDC
    1 MCB1-D1-1P MCB1-D1-2P MCB1-D1-3P MCB1-D1-4P
    2 MCB1-D2-1P MCB1-D2-2P MCB1-D2-3P MCB1-D2-4P
    3 MCB1-D3-1P MCB1-D3-2P MCB1-D3-3P MCB1-D3-4P
    4 MCB1-D4-1P MCB1-D4-2P MCB1-D4-3P MCB1-D4-4P
    6 MCB1-D6-1P MCB1-D6-2P MCB1-D6-3P MCB1-D6-4P
    10 MCB1-D10-1P MCB1-D10-2P MCB1-D10-3P MCB1-D10-4P
    16 MCB1-D16-1P MCB1-D16-2P MCB1-D16-3P MCB1-D16-4P
    20 MCB1-D20-1P MCB1-D20-2P MCB1-D20-3P MCB1-D20-4P
    25 MCB1-D25-1P MCB1-D25-2P MCB1-D25-3P MCB1-D25-4P
    32 MCB1-D32-1P MCB1-D32-2P MCB1-D32-3P MCB1-D32-4P
    40 MCB1-D40-1P MCB1-D40-2P MCB1-D40-3P MCB1-D40-4P
    50 MCB1-D50-1P MCB1-D50-2P MCB1-D50-3P MCB1-D50-4P
    63 MCB1-D63-1P MCB1-D63-2P MCB1-D63-3P MCB1-D63-4P

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