NDW3 Series Air Circuit Breaker | Nader Circuit Breaker

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Home / Products / ACB / NDW3 Series Air Circuit Breaker

NDW3 Series Air Circuit Breaker

Updated：August 12,2022 14:40PM

Nader NDW3 series ACB is applicable to the distribution network with AC 50Hz / 60Hz, rated current of 200A~7500A and rated working voltage of AC220V~AC1500V. It is used to distribute electric energy and protect lines and power supply equipment from overload, undervoltage, short circuit and single-phase grounding. The isolation protection function of the circuit breaker can achieve high-precision selective protection, avoid unnecessary power failure, and improve the reliability and safety of the power supply system. The products are suitable for the needs of power distribution systems in wind power, photovoltaic, metallurgy, rail transit and other fields.
2021 Quick Selection Guide »

Features

Features of NDW3 Series

Four types: C type (basic), L type (standard), M type (higher breaking) and H type (high breaking type) by the rated limit short-circuit breaking capability.
Smaller size, higher breaking capability.
Efficient short arcing, vibration resistance.
Boxed accessories may be used for rapid installation of circuit breaker, and timely respond to the user requirements without any adjustments.

Technology data

Technology data of NDW3 Series

NDW3-1600 series

Number of poles		3, 4
Rated current In 40℃	200A, 400A, 630A, 800A, 1000A, 1250A, 1600A
North pole rated current		100%In
Rated operational voltage Ue	AC220V/230V/240V, AC380V/400V/415V, AC440V/480V, AC660V/690V
Rated limit short-circuit breaking capacity Icu (AC415V)		66kA
Rated operating short-circuit breaking capacity Ics (AC415V)		55kA
Rated short-time withstand current Icw (AC415V) 1s		50kA
Controller	KM controller	●
	KY controller	●
Installation type	Fixed type	●
	Drawout type	●
Special application	Wind power, plateau type circuit breaker	●
	Thermal-humidity type circuit breaker	●

NDW3-2500 series

Number of poles		3, 4
Rated current In 40℃	630A, 800A, 1000A, 1250A, 1600A, 2000A, 2500A
North pole rated current		100%In
Rated operational voltage Ue	AC220V/230V/240V, AC380V/400V/415V, AC440V/480V, AC660V/690V,AC800V/1000V/1140V
Rated limit short-circuit breaking capacity Icu (AC415V)		S: 66kA H: 85kA
Rated operating short-circuit breaking capacity Ics (AC415V)		100% Icu
Rated short-time withstand current Icw (AC415V) 1s		100% Icu
Controller	KM controller	●
	KY controller	●
Installation type	Fixed type	●
	Drawout type	●
Special application	Wind power, plateau type circuit breaker	●
	Thermal-humidity type circuit breaker	●

NDW3-4000 series

Rated current InA	800, 1000, 1250, 1600, 2000, 2500, 2900, 3200, 4000
Rated current of Pole N			100%In
Rated working voltage Ue	AC220V/230V, AC380V/400V, AC415V, AC660V/690V, AC1000V
Rated insulating voltage Ui			1000V
Rated impact withstanding voltage Uipm			12kV
Number of poles			3, 4
Fully broken time (≤690V)			≤30ms
Closing time			≤70ms
Short circuit breaking capacity class		S	H
Rated ultimate short circuit breaking capacity Icu (effective value)	AC400V	85kA	100kA
	AC690V	75kA	85kA
	AC1000V	50kA	--
Rated operative short circuit breaking capacity Ics (effective value)	AC400V	85kA	100kA
	AC690V	75kA	85kA
	AC1000V	50kA	--
Rated short circuit connecting capacity Icm (peak value)	AC400V	187kA	220kA
	AC690V	165kA	187kA
	AC1000V	110kA	--
Rated short time withstanding current Icw (effective value) 1s	AC400V	85kA	100kA
	AC690V	75kA	85kA
	AC1000V	50kA	--
Operating performance (Times)Electrical service life	AC400V	8000	5000
	AC690V	6000	3000
	AC1000V	1000	500
Installation type	Fixed	●
Installation type	Drawer	●
Main circuit wiring type	Fixed	Horizontal, vertical, prolonged horizontal, prolonged vertical
Main circuit wiring type	Drawer	Horizontal, vertical, prolonged horizontal, prolonged vertical
External dimensions: W×D×H (mm)	Fixed 3P	428×300×392
	Fixed 4P	543×300×392
	Drawer 3P	435×432×401
	Drawer 4P	550×432×401

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NDW2 Series Air Circuit Breaker

Nader NDW2 series ACB is applicable to the distribution network with AC 50Hz / 60Hz, rated current of 200A ~ 6300A, rated insulation voltage of 1250v and rated AC working voltage of 220V to 1140V. It is used to distribute electric energy and protect lines and power equipment from overload, undervoltage, short circuit, single-phase grounding and other faults. It can also be used as an isolating switch. The circuit breaker has a variety of protection functions, which can not only achieve high-precision selective protection, but also avoid unnecessary sudden power failure, and improve the reliability and safety of the power supply system.