(0) Shopping cart
You have no items in your shopping cart.
Shopping Categories

    125A DC Circuit Breaker, 1/2/3/4 Pole

    Economical price DC circuit breaker with 125 amp for sale. The protection level of pv circuit breaker is IP20. Electrical circuit breaker is available for installation in standard busbars. 125 amp DC circuit breaker often used in overload protection device, power transfer switch and control appliance.
    SKU: ATO-DCCB-125A
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    125 amp DC circuit breaker has fast closing and fast breaking function, compact structure, small size and easy to use. Electrical circuit breaker is available for installation in standard busbars.


    • Extremely high breaking capacity and current limiting characteristics.
    • Available for installation in standard busbars.
    • Dual function terminals on top and bottom sides (lifting type / open type).
    • Optionally fixed to the bus bar on the top or bottom side.
    • With isolation function, can be used as the main switch.
    • Wiring terminal guidance to prevent mis-wiring.


    Electrical Parameter Model FXBN1/BM1-125A
    Current 125 A
    Rated Voltage DC 250V, 500V, 750V, 1000V
    Current Shell Frame 125A
    Numbers of Pole 1 pole, 2 pole, 3 pole, 4 pole
    Breaking Capacity 25 KA
    Rated Insulation Voltage 1000V
    Rated Impulse Withstand Voltage 8 kV
    Total Break Time 20 ms
    Installation Location any location
    Allowable Ambient Temperature -25 ℃ ~ 50 ℃
    Protection Level IP20
    Avaliable with Accessories auxiliary, alarm, diverter, manual operation, elecrtic operation, mechanical interlock
    Flying Arc Distance ≥50 mm
    Instantaneous Action Valve 12 ln
    Installation Method fixed, insertion type
    Standard IEC60947-2x IEC60947-K GB14048.R GB14048.2
    Machinery Parameter Mounting Method IEC standard track 35 mm
    Enclosure Protection Level IP20
    Dual Function Terminals on Both Sides open type / lifting type
    Terminal Protection finger touch and hand touch safety
    Terminal Wiring Capacity 1-25 mm²
    Termianal Screw Tightening Torque 2-2.4 Nm
    Bus Bar Thickness 0.8-2 mm
    Mounting Angle functionaity is independent of location

    Dimension (Unit: mm)

    DC circuit breaker dimension

    Wiring Diagram

    Wiring diagram DC circuit breaker


    125A DC Circuit Breaker Details

    Tips: What is the Function of DC Circuit Breaker?

    The same thermal and magnetic protection principles apply to DC breakers as they do to AC circuit breakers. Thermal protection trips the DC circuit breaker when the electric current exceeds the rated value. Bimetallic contact heats expand and trip the circuit breaker in this protective mechanism. The thermal protection functions faster because the current generates more heat to expand and open the electric connection as the current is considerable. The DC circuit breaker’s thermal protection protects against an overload current that is slightly higher than the typical operating current.

    Write your review for 125A DC Circuit Breaker, 1/2/3/4 Pole
    • Only registered users can write reviews
    • Bad
    • Excellent