Air Circuit Breaker (ACB) 1600A-6300A Fixed & Drawout Type

General product information

Product Commercial Terms

Description：

Air circuit breakers (ACBs) are high-performance low-voltage circuit breakers, with representative models including the MT/NT and MVS series. Rated current ranges from 630A to 6300A, with breaking capacity up to 150kA. Suitable for industrial, commercial, and energy distribution systems.

Key Features:

Intelligent: Built-in Micrologic trip module supports real-time monitoring (current, voltage, fault logging) and remote control, compatible with the EcoStruxure platform.

High Reliability: Modular design, optional electronic/thermal-magnetic protection, service life up to tens of thousands of operations.

Comprehensive Protection: Provides overload, short-circuit, and ground fault protection, and supports selective coordination.

Flexible Expansion: Can be equipped with communication modules (Modbus, Ethernet) and auxiliary contacts.

Suitable for data centers, factories, and large buildings, featuring high security, digital management, and low energy consumption, compliant with IEC/GB standards.

Working principle：

An air circuit breaker (ACB) operates by automatically cutting off current when it detects an overload or short circuit. During normal operation, its main contacts remain closed, allowing current to flow freely. When a sustained overcurrent occurs, the thermal element bends due to heat, triggering the circuit breaker mechanism. In the event of a sudden short circuit, the solenoid coil generates a momentary magnetic force that trips the circuit breaker mechanism. This action rapidly separates the main contacts. A strong electric arc is generated between the separated contacts and is immediately sent to the arc-extinguishing chamber, where the arc is broken up, cooled, and extinguished, thus safely disconnecting the circuit and preventing system damage.

Quick Detail:

Air Circuit Breaker

ACB

LV ACB (Low Voltage Air Circuit Breaker)

Fixed Air Circuit Breaker

Fixed ACB

2000A Circuit Breaker

1600A ACB

2000A Frame ACB

6300A ACB

Medium-Frame ACB

Circuit Protector

Power Circuit Breaker

Main Circuit Breaker

Industrial Circuit Breaker

Fixed Mount Circuit Breaker

Drawer-type air circuit breaker

The Air Circuit Breaker (ACB) is designed for the primary protection and control of electrical power distribution networks. It serves as a critical safety component in low-voltage systems, reliably interrupting fault currents and preventing damage to downstream equipment from overloads and short circuits. Its robust design ensures operational continuity and safety for personnel and assets in industrial plants, commercial buildings, and large infrastructure projects.  

Air Circuit Breakers (ACBs) are deployed as the first line of defense in main power distribution and protection. Their primary applications span across industrial plants, large commercial complexes, data centers, and public infrastructure like airports and hospitals, where they ensure system integrity, protect costly equipment from electrical faults, and guarantee operational safety and continuity in mission-critical environments.

Q: What is the voltage/current range of this product? What is its breaking capacity?

A: Please contact customer service for details.

Q: What is the minimum order quantity? Do you accept sample orders?

A: The minimum order quantity is 1 set, and we accept sample orders.

Q: What is the warranty period? How do I apply for a warranty?

A: The product warranty is 1 to 2 years. Please contact customer service directly to apply.

Q: Do you have CE, RoHS, UL, or other certifications? Can you provide certificates?

A: We have CE and RoHS certifications and can provide certificates.

Q: Does the price include tax/shipping?

A: The price does not include shipping/tax.

Q: What notable clients or project examples have you worked with?

A: State Grid Corporation of China, Chint Group.