Air Circuit Breaker

Air Circuit Breakers

CNC Electric delivers safe and reliable low-voltage electrical solutions across 130+ countries, supporting 30+ exclusive distributors and 200+ CNC stores worldwide.

Our commitment to localization and market expansion ensures tailored solutions for different regions, backed by strategic partnerships, dedicated service teams, and participation in leading industry exhibitions such as MEE, Elektro, Electric & Power, Canton Fair and etc.

Air Circuit Breaker(ACB)

The ACB (Air Circuit Breaker) series, including models YCW1 and YCW3, is engineered for AC 50Hz/60Hz power distribution systems with rated voltages of 400V and 690V, and rated currents ranging from 200A to 6000A. Designed to distribute electrical energy and provide comprehensive protection against overload, under-voltage, short-circuit, and single-phase earth faults, these breakers enhance power supply reliability and minimize unnecessary outages through intelligent and selective protection functions.

YCW1 Series Air Circuit Breaker

630A–6300A | 3P/4P | 50Hz | IEC60947-1,IEC60947-2

YCW3 Air Circuit Breaker

200A–6300A | 3P/4P | 400V/690V | Icu up to 135kA

Why Choose

CNC Air Circuit Breaker

YCW3 series air circuit breaker (ACB) is suitable for AC 50Hz/60Hz circuits with rated service voltage 400V/690V and rated current ranging from 200A to 6300A. It is mainly used to distribute electric energy and protect circuits and equipment against overload, under-voltage, short-circuit and single-phase earthing faults. With intelligent and selective protection functions, it enhances power supply reliability and avoids unnecessary power outages, applicable for power stations, factories, mines (690V) and intelligent buildings. Complies with IEC/EN 60947-2 standard.

Rated Current: 200A-6300A (frame sizes: 1600, 2000, 2500, 3200, 4000, 6300)

Poles: 3P, 4P

Rated Voltage (Ue): 400V/415V, 660V/690V

Rated Insulation Voltage (Ui): 1000V

Rated Ultimate Short-Circuit Breaking Capacity (Icu): Up to 135kA (400V), 100kA (690V)

Intelligent Controller: M/H (digital display) and 3M/3H (LCD display) types, providing overload, short-delay, instantaneous protection; 4P/3P+N models with earth fault protection; H-type supports communication function.

Installation: Fixed type (horizontal/vertical) and drawout type (horizontal/vertical) for flexible mounting.

https://www.cncele.com/ycw3-air-circuit-breaker-product/

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Solution

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Bulk Wholesale

Global supply chain support with competitive pricing for large quantity orders. Dedicated account managers and flexible delivery terms.

WhatsApp: +8618958711903 E-mail: marcom@cncele.com

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Custom manufacturing solutions tailored to your brand requirements with strict quality control and confidential production.

Dealer Network

Join our global dealer program with exclusive territories, marketing support, and technical training resources.

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FAQ

What is an air circuit breaker?
An air circuit breaker (ACB) is a low-voltage electrical protection device that uses air as the arc-extinguishing medium. It is designed to safely interrupt high currents during overloads, short circuits, or faults in industrial and commercial power distribution systems.

What is the function of the ACB?
ACB’s core functions include overload protection, short-circuit protection, and current interruption. It ensures stable operation of electrical networks by isolating faulty circuits, preventing equipment damage and safety hazards in power distribution systems.

What is the difference between ACB and MCCB?
ACB is typically used for high-current applications (above 630A) with higher breaking capacity, suitable for main distribution panels. MCCB (Molded Case Circuit Breaker) is for lower currents (up to 630A) in branch circuits, with a more compact design.

What is the difference between an air circuit breaker and a vacuum circuit breaker?
ACB uses air for arc extinction, ideal for low-voltage systems (up to 1kV). Vacuum circuit breakers use vacuum technology, designed for medium/high-voltage applications (above 1kV) with faster arc quenching and longer life spans.

What types of ACB are available?
Our ACB series includes fixed-mounted and draw-out types, with options for 3-pole or 4-pole configurations, and breaking capacities ranging from 25kA to 100kA to meet diverse industrial needs.

Are your ACBs certified?
Yes, our ACB products comply with global mainstream safety certifications, ensuring reliability and compliance in international markets.

Do you support OEM for ACB products?
Yes, we offer OEM services for ACB, including custom branding, specifications, and packaging to meet client requirements.

What is the delivery time for ACB orders?
Delivery time varies by region and order quantity. Contact our team for a detailed timeline tailored to your location.

How can I contact a local distributor for ACB?
Please reach out to our sales department via email or phone to get contact information for your nearest ACB distributor.