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

$109.15
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.
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SKU: ATO-DCCB-125A
30-day Returns
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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.

Features

  • 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.

Specifications

Electrical Parameter Model ATO-FXBN1/BM1-125A
Current 125A
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
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

Details

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.

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