- Etigroup

Introduction

Air circuit breakers (ACBs) are vital components in electrical power systems, providing robust protection for distribution lines, generators, and other high-current equipment. These circuit breakers operate by utilizing air as the insulating and arc-quenching medium, making them suitable for high-current applications. ACBs are designed to automatically interrupt the flow of electricity in the event of overloads or short circuits, safeguarding valuable assets and ensuring the stability of power distribution networks.

Features

High Breaking Capacity

The EPL/EPH series ACBs have a maximum breaking capacity of 150 kA (at 500V, EPH D Frame). This ensures the safe protection of equipment from abnormal phenomena like harmonics.

IR Sensor Application

The series supports the application of IR sensors for temperature monitoring. The sources provide guidelines for optimal installation and usage of the IR sensor, including recommended distances, surface preparation, and address/baud rate settings.

Temperature Sensor

An integrated temperature sensor provides reliable high-temperature measurement by monitoring the heat source. (Measurement range: -5 - 250 degrees Celsius).

Retrofit Capability: ETI provides customized retrofit ACBs that are compatible with previously installed ACBs. This allows for seamless integration with existing systems without needing to replace busbars or external boxes, minimizing downtime and construction time.

Horizontal/Vertical Bus Bar Terminal: The bus bar terminal can be configured for either horizontal or vertical connection, providing flexibility for various panel structures.

Draw-In/Out Device: For easy maintenance, a draw-in/out device can be attached to the ACB body. This allows for the ACB to be isolated, tested, and removed from the cradle without disrupting power.

100% N Phase Current Flow Capacity: All models in the EPL/EPH series feature 100% N phase current flow capacity. This protects against abnormal events like harmonics and ensures stable power supply.

Comprehensive Protection with OCR: The EPL/EPH series are equipped with highly functional Over Current Relays (OCRs), which provide comprehensive protection functions, including long time, short time, and instantaneous trip settings, as well as ground fault protection.

ETI product serie

The EPL/EPH series air circuit breakers (ACBs) offer customers a wide selection and high levels of satisfaction, thanks to their dual model design and compact size. These ACBs are designed to meet diverse customer needs, and are suitable for various applications, including industrial buildings, computer centers, and device industries.

The EPL/EPH series ACBs are certified by DEKRA and KERI according to IEC 60947-1 and IEC 60947-2 standards, ensuring safety and reliability.
They also carry the CE mark, indicating compliance with European safety, health, and environmental protection standards.

The EPL/EPH series ACBs are available in various models to suit different applications.

EPL Series: Offered in A and B frames with rated currents from 630A to 3200A.

EPH Series: Available in A, B, C, and D frames, with rated currents from 630A to 6300A.

N, A, P, and H Type OCRs: The series offers multiple types of OCRs with varying features. These include basic overcurrent protection, NFC functionality, fault recording, waveform capture, communication protocols (MODBUS), and power monitoring functions.

The EPL/EPH series air circuit breakers provide a reliable, safe, and flexible solution for a wide range of applications. With their high breaking capacity, retrofit capabilities, comprehensive protection features, and compliance with international standards, the EPL/EPH series ACBs are a robust choice for any industrial setting.

Application

Reliable protection and control for low-voltage electrical systems

Air Circuit Breakers (ACBs) are key components in low-voltage power distribution systems. They are primarily used for protecting electrical circuits and equipment from damage caused by overloads, short circuits, and ground faults. In addition to their protective function, ACBs enable safe switching and isolation of power sources during maintenance or emergencies.

ACBs are designed for high-current applications, typically above 800 A, and are most often used in main power distribution systems. Their ability to interrupt large fault currents and their long mechanical and electrical lifespan make them suitable for demanding environments.

Core Features:

High breaking capacity for dependable protection in critical applications.
Wide range of current ratings and frame sizes.
Trip units available in thermal-magnetic or advanced electronic versions.

Adjustable protection settings for selective coordination and system optimization.
Modular construction for easy installation, maintenance, and upgrades.
Communication and remote control options for smart energy management (in advanced models).

Main switchboards in industrial and commercial buildings.
Energy distribution in infrastructure projects.
Generator and transformer protection.

Critical systems in hospitals, data centers, and airports.
Renewable energy installations and backup systems.

High level of safety for people and equipment.
Flexibility in system design and configuration.
Long service life and high mechanical durability.
Compliance with international standards (e.g., IEC 60947-2).

Air circuit breakers are a robust and flexible solution for modern electrical networks, ensuring uninterrupted operation and system protection under all conditions.

Product site

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EPL/EPH Preassembled ACBs

Introduction

Features

High Breaking Capacity

IR Sensor Application

Temperature Sensor

ETI product serie

Application

Product site

Catalogs & Manuals

Additional links

Product news

Inquiry Form

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EPL/EPH Preassembled ACBs

Introduction

Features

High Breaking Capacity

IR Sensor Application

Temperature Sensor

ETI product serie

1. Certifications and Standards

2. Model Selection

3. Over Current Relay (OCR) Options

Application

1. What Makes ACBs Essential?

2. Typical Applications

3. Advantages of Using ACBs

Product site

Catalogs & Manuals

Additional links

Product news

Inquiry Form

Support

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