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

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$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.

Number of Poles *

SKU: ATO-DCCB-125A

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Delivery date: 6-12 days

Overview

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

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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