Miniature Circuit Breaker FTB2-63

Short Description:

Mainly used in distribution lines of AC 50HZ, rated working voltage 230 / 400V, rated current not more than 63A. For overload & short circuit protection, also can be used for line non-frequent on-off operation and conversion.

  • FOB Price: US $0.5 - 9,999 / Piece
  • Min.Order Quantity: 100 Piece/Pieces
  • Supply Ability: 10000 Piece/Pieces per Month
  • Port: Shenzhen
  • Payment Terms: L/C,D/A,D/P,T/T
  • Technical data

    Product illustration

    Tripping characteristic

    Exterior and dimensions

    Related video

    Product illustration


    Technical Data

    Model FTB2-63 Miniature circuit-breaker
    Number of poles IP 2P 3P 4P
    Rated frequency: AC 50/60Hz
    Rated voltage (V) AC 230/400
    Rated current (A) C


    1,2,3,4, 6, 10, 16, 20, 25, 32, 40, 50, 63


    Rated breaking capacity(KA) 6.5
    Mechanical & electrical life: 20,000 operations
    Protection rating IP20
    Installation On DIN rail 35mm according to JB6525
    Connection capacity: Cross-section of conductors up to 25mm2 , Cross-section of busbar from 0.8- 2mm2,reversibility of connections
    Tightening torque 2 Nm
    Ambient temperature ( C) -5 C ~ +40 C
    Altitude (m) ≤2000m
    Relative air humidity no more than 95%
    Pollution degree
    Installation condition Used in place without obvious shock and vibration
    Weight (g) 102 208 308 408

    Product Feature

    - These circuit breakers are intended for the protection of circuits against overloads and short circuits in residential, commercial and industrial premises;

    - It covers the rating range from 6 to 63A with a uniform breaking capacity of 6.5 kA throughout;

    - Current-limiting scheme: in the event of a short circuit, are able to limit the let-through current to 60%-70%  of the rated current;

    - The arc extinguishing system: allows the short-circuit currents of very high value to be interrupted extremely rapidly, the remarkable opening speed of contacts opening and the structure of the arcing chamber contribute to extinguishing the arc in the shortest possible time;

    -The sensitivity and reliability of the trip mechanism ensures perfect closure every time,thereby considerably improving the performance of these devices and extending their average lifetime;

    - The internal contact position allows an exact information of the circuit-breaker status:“green”, open contacts;“red”, closed contacts,independently of the toggle position;

    - Sealing/locking sealable with 1 mm wire , to prevent unwanted  tripping;

    - The supply lines of the protected circuit can be connected to either the upper or lower terminals of the circuit-breakers(reversibility of connections). The double terminal of these circuit-breakers enables simultaneous connection of cables and busbars.


    Tripping characteristic

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    Exterior and dimensions



    Number of poles 1P 2P 3P 4P
    a 80±0.8
    b 74.2±0.8 75.7±0.8
    c 17.8±0.5 35.6±0.8 53.4±0.8 71.2±0.8
    d 44±0.8
    e 68.7±0.8 70.2±0.8
    f 45±0.8
    g 35.5±0.8


    Please refer to below table for the connection of wires with a cross section area

    Rated current In(A) Nominal cross section area of copper wire(mm2 )
    1~6 1
    10 1.5
    16,20 2.5
    25 4
    32 6
    40,50 10
    63 16

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