Intelligent Universal Air Circuit Breaker with Advanced Electronic Trip Unit for Power Distribution

Product Description

Product Description

QDW3

The Air Circuit Breaker (ACB) is a low-voltage power protection device designed for main power distribution systems, ensuring safe and reliable control of electrical circuits under normal operation and fault conditions. By using air as the arc-extinguishing medium, the ACB is capable of interrupting high short-circuit currents and maintaining stable performance in demanding electrical environments.

Equipped with an advanced electronic trip unit, the ACB provides accurate and adjustable protection functions, including overload, short-circuit, instantaneous, and earth fault protection. These features allow effective coordination with upstream and downstream protection devices, improving system selectivity and overall reliability.

The ACB is available in both fixed and withdrawable (draw-out) types. The withdrawable version offers clear position indication, including connected, test, and disconnected positions, enhancing safety and convenience during maintenance and inspection. Multiple accessories such as shunt release, closing electromagnet, motor-operated mechanism, and auxiliary contacts can be integrated to meet different control and automation requirements.

Designed for high-current applications, the ACB supports a wide current range and is available in 3-pole and 4-pole configurations. It is commonly used as an incoming or outgoing breaker in switchgear panels, power distribution cabinets, generator systems, and industrial power networks.

Manufactured in accordance with IEC 60947-2 standards, the ACB features high breaking capacity, long mechanical and electrical life, and consistent quality control. It provides a reliable and cost-effective solution for commercial buildings, industrial facilities, data centers, and infrastructure projects.

Arc-Extinguishing Medium	Air
Structure	ACB (Air Circuit Breaker)
Type	Circuit Breaker
Certification	ISO9001-2000, CE, CB, TUV
Origin	China
Speed	Normal-speed circuit breaker
Installation	Fixed
Poles Number	3,4
Function	Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP (Overvoltage Protection)
Trademark	Q&S
Production Capacity	5000 PCS/Week

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FAQ

1. Are you a manufacturer or a trading company?
We are a professional manufacturer specializing in high and low voltage electrical products, including MCB, MCCB, ACB, VCB, RCCB and related accessories. All products are produced in our own factories under strict quality control.

2. What international standards do your products comply with?
Our products are designed and tested in accordance with IEC international standards and carry relevant international certifications such as CE, CB, and TÜV, depending on product type and customer requirements.

3. What is your Minimum Order Quantity (MOQ)?
Our standard MOQ is flexible and depends on the product model and packaging requirements. Small trial orders are welcome to support new customers during initial cooperation.

4. Can you provide samples?
Yes, free samples are available for most models. Customers only need to cover the shipping cost.

5. What is your delivery time?
Normally, production lead time is 15–30 days after order confirmation and deposit receipt. Delivery time may vary depending on order quantity and product specifications.

6. How do you ensure product quality?
All products undergo strict inspection from raw materials to final testing. We implement full-process quality control, including routine electrical performance testing and mechanical endurance verification.

7. Do you offer OEM or private labeling services?
Yes, we provide OEM customization, including brand logo, packaging, and product labeling according to customer requirements.

8. What payment terms do you accept?

Standard terms are T/T, with deposit before production and balance before shipment. Other terms can be discussed depending on cooperation scale.Our products are exported to many markets worldwide, including Europe, South America, the Middle East, Southeast Asia, and Africa.