English
IEC60947-2
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Technical Data
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℃ | ||||
Advantages and Feature
1. Innovative Closing Failure Protection Device
This protection function is an exclusive innovative application, certified with a software registration certificate and a national invention patent. It effectively enhances the operational reliability of the ASKW1 series ACBs.
High-precision MCU microprocessor with millisecond-level response speed and strong anti-interference capability. This device functions as a bypass unit and does not interfere with the operation of the main switch.
2. Foreign Object Prevention Isolation Mesh
The ASKW1 series air circuit breaker features a metal perforated isolation mesh added to the busbar cooling grilles. This design effectively prevents foreign objects from entering the interior of the breaker without compromising heat dissipation. It significantly enhances operational reliability and meets high-level safety protection standards.
3. Drawer Base Position Feedback Terminal
The ASKW1 series ACB is equipped with position status feedback terminals that can relay the drawer base’s disconnected position, test position, and connected position to the intelligent terminal backend. This aligns with the technical requirements of smart IoT systems for low-level power distribution equipment.
Dedicated position feedback signal, installed on the side of the product, without occupying the auxiliary contact terminal block.
4. High-Performance Arc Extinguishing Chamber
The arc extinguishing chamber is made of specialized insulating materials and designed based on computer-simulated data to optimize the angle of the arc-splitting grid. This allows the arc to rapidly extinguish and dissipate after entering the chamber from above, achieving a zero arc-flash zone. The entire chamber is housed within the insulating base of the circuit breaker, enhancing its mechanical strength and preventing rupture during high-current short-circuit interruptions, thereby improving product safety
FAQ
1. What is an ACB (Air Circuit Breaker)?
An ACB (Air Circuit Breaker) is a protection device used in low-voltage power systems. It can quickly cut off the current when a circuit fault occurs, protecting equipment and personnel from electrical hazards. It uses air as the medium to extinguish the arc, making it a commonly used switching device in electrical systems.
2. What is the difference between ACB and MCCB?
Both ACB (Air Circuit Breaker) and MCCB (Molded Case Circuit Breaker) are used for protection in electrical systems, but they are suitable for different current ranges. ACB is generally used in high-power, high-current electrical systems, while MCCB is suitable for medium to small-sized electrical systems. ACB has a higher rated current, usually used for applications above 500A, whereas MCCB is typically used for lower currents.
3. What is the working principle of an ACB?
The working principle of an ACB is based on the air medium arc-extinguishing principle. When a circuit fault occurs, the contacts inside the ACB open, and the arc forms in the air and is quickly extinguished. To prevent the arc from causing a fire or damaging equipment, the ACB is designed with a forced air cooling system and arc-extinguishing devices to rapidly extinguish the arc.
4. How to choose a suitable ACB?
When selecting an ACB, the following factors need to be considered:
• Rated Current: Ensure the rated current of the ACB matches the working current of the system.
• Breaking Capacity: Choose an ACB with sufficient breaking capacity to handle short-circuit currents in the system.
• Operating Environment: Consider the operating environment of the ACB (such as temperature, humidity, etc.), as well as whether additional protection features (e.g., dustproof, waterproof) are needed.
• Voltage Rating: Choose an ACB that meets the voltage requirements of the system.
5. How to maintain an ACB?
Maintenance of an ACB mainly includes the following aspects:
• Regular Inspection: Check the contacts and arc-extinguishing system of the ACB to ensure they are functioning properly.
• Cleaning and Lubrication: Clean the internal dust of the ACB and check and lubricate moving parts to prevent wear.
• Functional Testing: Regularly perform overload protection and short-circuit protection tests to ensure the ACB can disconnect the circuit promptly when a fault occurs.
• Check Wiring: Check if the cable connections are loose to ensure stable electrical connections.
6. What should be done if an ACB fails?
If an ACB fails, first disconnect the power supply to ensure safety. Then, check if the fault is caused by overload or short-circuit. If the issue is more serious, it is recommended to contact a professional electrical engineer for repair or replacement. Avoid attempting to repair it yourself to prevent further damage or safety hazards.
