High-Performance Air Circuit Breakers (ACB) for Reliable Low-Voltage Distribution
JUTRION air circuit breakers provide reliable protection, intelligent control, and high breaking capacity for industrial and commercial low-voltage distribution systems. Available in fixed and draw-out designs, they support flexible configurations, advanced protection functions, and OEM/ODM customization.
JUTRION Air Circuit Breakers (ACB)
High Breaking Capacity
Designed to interrupt high short-circuit currents and protect main distribution circuits.
Intelligent LSIG Protection
Supports long-time, short-time, instantaneous, and ground-fault protection for flexible system coordination.
Fixed and Draw-Out Options
Available in fixed and draw-out designs to meet different installation and maintenance requirements.
Reliable Remote Control
Optional motor operation, trip accessories, auxiliary contacts, and communication.
JUTRION Core Air Circuit Breaker Products
JUW1 Series Fixed Air Circuit Breaker
1. Compact Installation
The fixed design requires less cabinet space and is suitable for compact switchboard layouts.
2. Simple and Reliable Structure
Direct fixed installation reduces mechanical moving parts and provides stable long-term operation.
3. Cost-Effective Solution
Lower installation and equipment costs make it suitable for projects with limited maintenance requirements.
4. Suitable for Standard Distribution Applications
Widely used in industrial, commercial, and infrastructure power distribution systems.
JUW1 Series Draw-out Air Circuit Breaker
1. Easy Maintenance and Replacement
The breaker can be withdrawn from the chassis without disconnecting the main busbar, reducing maintenance time.
2. Three Operating Positions
Supports connected, test, and isolated positions for safer commissioning and maintenance.
3. Improved System Continuity
A spare breaker can be installed quickly when replacement is required, helping reduce downtime.
4. Suitable for Critical Distribution Systems
Ideal for data centers, industrial plants, hospitals, and other applications requiring convenient maintenance and high power continuity.
Main Technical Specifications of JUTRION ACBs
Rated Current: 630A–6300A
Rated Voltage: AC 400V / AC 690V
Breaking Capacity: 50kA–120kA
Number of Poles: 3P / 4P
Installation Type: Fixed / Draw-Out
Trip Unit: Thermal-Magnetic or Electronic
Protection Functions: LSIG adjustable protection
Communication Options: RS485 / Modbus, LCD display
Applicable Standard: IEC 60947-2
To sum up, our JUTRION ACB line is a heavy-duty industrial solution compliant with IEC 60947-2. It covers currents from 630A up to 6300A with a high breaking capacity of up to 120kA. With full 3P/4P availability in both fixed and draw-out designs, its core technical edge lies in the adjustable LSIG protection and smart Modbus communication, making it ready for any modern switchgear integration.
Core Application Areas of ACBs
JUTRION air circuit breakers are widely used in industrial, commercial, critical infrastructure, and power generation systems to provide reliable main circuit protection, feeder control, and power distribution.
Industrial Power Distribution
Used as the main incoming or feeder breaker in factories, production lines, and industrial distribution systems.
Commercial Buildings
Used in shopping centers, office buildings, hotels, and other large commercial power distribution systems.
Data Centers and Critical Infrastructure
Provides reliable circuit protection for data centers, hospitals, airports, and other critical infrastructure facilities.
Power Generation and Renewable Energy
Used in generator systems, solar power plants, wind projects, and energy storage distribution systems.
Selecting the Right ACB Configuration for Your Project
1.Confirm the system voltage and maximum load current.
2.Calculate the prospective short-circuit current.
3.Select suitable Icu, Ics, and Icw ratings.
4.Choose 3P or 4P according to the system design.
5.Select fixed or draw-out installation.
6.Confirm LSIG protection, accessories, and communication functions.
ACB Engineering & Selection FAQ
What Is an Air Circuit Breaker (ACB)?
An air circuit breaker is a low-voltage switching and protection device that uses air as the arc-extinguishing medium. It is commonly used for main incoming, bus-coupler, and high-current feeder protection in low-voltage distribution systems.
What Is the Difference Between an ACB and an MCCB?
An air circuit breaker is a low-voltage switching and protection device that uses air as the arc-extinguishing medium. It is commonly used for main incoming, bus-coupler, and high-current feeder protection in low-voltage distribution systems.
How Do I Select the Correct Rated Current for an ACB?
Select the rated current according to the maximum continuous load current, installation environment, cabinet temperature, future load expansion, and protection coordination requirements.
What Is the Difference Between Fixed and Draw-Out ACBs?
A fixed ACB is directly installed in the switchboard and offers a compact, cost-effective structure. A draw-out ACB can be moved between connected, test, and isolated positions, making maintenance and replacement easier.
What Does LSIG Protection Mean?
LSIG refers to long-time, short-time, instantaneous, and ground-fault protection. These functions can usually be adjusted to achieve accurate protection and selective coordination.
Can JUTRION ACBs Support Remote Control and Communication?
Yes. Selected models can be equipped with motor operators, shunt trips, undervoltage releases, auxiliary contacts, LCD displays, and RS485 or Modbus communication.
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