ASKW1 Air Circuit Breaker(ACB)

Model		ASKW1-2000	ASKW1-3200	ASKW1-4000	ASKW1-6300
Standard		IEC/EN 60947-2
Number of poles		3P,  4P
Frame Current Inm(A)		2000	3200	4000	6300
Rated working current In(A)		630, 800, 1000, 1250, 1600, 2000	2000, 2500, 2900, 3200	3200, 3600, 4000	4000, 5000, 6300
Rated impulse withstand voltage Uimp (KV)		12
Rated working voltage Ue(V)		AC 50/60Hz   400V/690V
Rated limit short-circuit breaking capacity Icu (KA)	400V	85	100	100	120
	660/690V	65	70	70	85
Rated operating short-circuit breaking capacity Ics (KA)	400V	65	80	80	100
	660/690V	65	70	70	85
Rated short time withstand current for 1s Icw (KA)	400V	65	80	80	100
	660/690V	65	70	70	85
Isolation function		YES
Protection level		IP40
Electrical lifespan		6000
Mechanical lifespan		10000
Ambient temperature		-5℃~+40℃;the average value within 24h shall not exceed +35℃

Product Overview

The ASKW1 series intelligent Air Circuit Breaker (ACB) is a cutting-edge solution engineered for low-voltage power distribution networks. Operating at AC 50Hz/60Hz with a rated voltage up to 690V and a rated current range of 630A to 6300A, it serves as a critical component for safe and efficient power distribution.

Designed to protect circuits and power equipment from overload, undervoltage, short-circuit, and single-phase grounding faults, the ASKW1 ACB integrates advanced intelligent protection and isolation functions. Its precise selective protection minimizes unnecessary power outages, significantly enhancing overall power supply reliability—a key advantage for industrial and commercial applications.

Equipped with an H-type controller featuring an open communication interface, the ASKW1 enables remote measurement, signaling, control, and adjustment. This compatibility with automated systems makes it ideal for modern smart grids and centralized control setups. The product complies with the IEC60947-2 standard, ensuring global safety and performance benchmarks.

Features

Innovative Closing Failure Protection Mechanism

A proprietary technology with a software registration certificate and national invention patent, this feature boosts operational reliability. Powered by a high-precision MCU microprocessor with millisecond-level response speed and strong anti-interference capability, it acts as a bypass unit without disrupting the main switch’s operation—reducing downtime and enhancing system stability.

Foreign Object Prevention Isolation Mesh

The ASKW1 ACB incorporates a metal perforated isolation mesh in its busbar cooling grilles. This design effectively blocks foreign objects from entering the breaker while maintaining optimal heat dissipation. It not only elevates operational safety but also meets stringent high-level protection standards, making it suitable for harsh environments.

Drawer Base Position Feedback Terminal

Equipped with dedicated position status feedback terminals, the ASKW1 relays the drawer base’s disconnected, test, and connected positions to intelligent backend systems. Installed on the product’s side without occupying auxiliary contact terminal blocks, this feature aligns with IoT requirements for low-voltage distribution equipment, supporting smart monitoring and remote management.

High-Performance Arc Extinguishing Chamber

Crafted from specialized insulating materials and optimized using computer-simulated arc-splitting grid angles, the arc extinguishing chamber ensures rapid arc extinction and dissipation upon entry—creating a zero arc-flash zone. Housed within an insulating base, it enhances mechanical strength, preventing rupture during high-current short circuits and maximizing safety.

Applications

The ASKW1 Air Circuit Breaker (ACB) is versatile across multiple industries, including:

· Construction: Safeguards power distribution in commercial and residential buildings, ensuring stable electricity for lighting, HVAC, and machinery.

· Data Centers: Protects critical IT infrastructure from electrical faults, minimizing downtime for servers and cooling systems.

· Mining: Withstands harsh conditions to maintain power supply for mining equipment, ensuring continuous operation in challenging environments.

· New Energy: Integrates seamlessly with solar and wind power systems, managing distribution in renewable energy setups.

· Power Supply: Serves as a core component in utility grids, enhancing reliability for municipal and industrial power networks.

Applications  Advantages

· Closing failure protection device

ACB is used in a wide range of places and customers are wired in a variety of ways. Relying on years of after-sales data analysis, ASKW1 series ACB has increased the closing failure protection device, which  is an exclusive and innovative application of the protection function, and has obtained the software registration certificate and applied for the national invention patent, which effectively improves the reliability of the use of ASKW1 series ACB.

Uses:

Protection of the closing solenoid from continuous energization of the closing coil leading to burnout.

Protection methods:

After a failure of one closure, disconnect the power supply of the closing coil, and close it again after a time delay, and after 3 failures of closure, cut off the circuit of the closing coil.

Features:

High-precision MCU microprocessor,millisecond response speed, strong anti-jamming ability This device is a bypass device, does not interfere with the operation of the switch body.

· Containment mesh to prevent falling in

High level of safety and protection standards

The ASKW1 series ACB adds a metal porous isoation mesh to the copper heat dissipation grille, which effectively prevents foreign objects from falling into the interior of the switch without affecting the heat dissipation, and effectively enhances the operational reliability of the product.

Uses:

Prevents foreign objects from falling inside the switch.

Protection methods:

physical isolation.

Features:

Does not affect product heat dissipation.

· Drawer base status feedback terminal

High level of safety and protection standards

ASKW1 series ACB is set with position status feedback terminals, which can feedback the status of disconnection position, experimental position and connection position of the drawer base to the background of  the intelligent terminal, which is close to the technical requirements of the intelligent Internet of Things for the underlying power distribution equipment.

Uses:

Provides position feedback signals for 3 states of the drawer base.

Features:

Dedicated position feedback signal, mounted on the side of the product, does not occupy the auxiliary contact terminal block.

· High performance interrupters

High-grade components

The arc extinguishing chamber made of special insulating material, according to the computer simulation data to set the angle of the flame extinguishing grid, so that the arc upward into the arc extinguishing  chamber quickly extinguished  and free, realizing the zero flying arc area,the arc extinguishing chamber is placed in the insulating base of  the circuit breaker, which strengthens the mechanical strength of the arc extinguishing chamber and prevents  it from blowing up during the breaking of the high-current short-circuit, and improves the safety of the product.

Uses:

Fast arc extinguishing

Features:

Computer simulation design, more closely match the actual state.

FAQ

· Can you provide controllers with communication capabilities?

Of course, you can choose the H-type controller, which has RS485 communication and features remote control, remote communication, remote adjustment, and remote measurement functions.

· What certifications does this ACB product have?

This product has the following certifications: CE, TUV, RoHS, CB, and 3C mandatory certification.

· What could be the reason why a circuit breaker cannot be manually disconnected?

There are two possible reasons: First, the operating mechanism may be malfunctioning; check if anything is stuck in the operating mechanism. Second, the adjusting screw on the release half-shaft may not be properly adjusted; the position of the adjusting screw needs to be adjusted.