300A DC Circuit Breaker, 3 Pole

5 out of 5 based on 1 reviews | Write a review

$255.92

Lower price 300A DC circuit breaker with 20 ms total break time for sale online. Working temperature of smart circuit breaker between -25℃ and 50 ℃. PV DC circuit breaker is commonly used in power transfer switch, overload protection device and control appliance.

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SKU: ATO-DCCB-300A

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Delivery date: 6-12 days

Overview

3 pole circuit breaker is available for installation in standard busbars. DC circuit breaker has overload long delay protection and short-circuit instantaneous protection functions.

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/BM1-300A
	Current	300A
	Rated Voltage	DC 750V
	Current Shell Frame	400A
	Numbers of Pole	3 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)

300A 3P/4P DC circuit breaker dimension

Note: If you need copper busbar parts, please contact us.

Wiring Diagram

3 pole DC circuit breaker wiring diagram

Details

Tips: The Importance of DC Circuit Breaker For Solar Photovoltaic Panel

DC circuit breaker is critical in solar photovoltaic panel system. Circuit for solar panel is a pricey component of the system. As a result, it is vital to safeguard them using a DC circuit breaker. You can connect the solar pv system panels' circuits to a combiner box. The DC circuit breaker also protects the circuits and boards.

Existing reviews of 300A DC Circuit Breaker, 3 Pole

Use in my kitchen

I bought to install a dedicated circuit for my welder, power tools since my only amp breakers are in the kitchen. This 300A DC circuit breaker works as it should, and I am happily running my welder without tripping breakers.

From: Matte | Date: 13/12/2022

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