Product Overview

The ABB MT-91-ARCFPA is an advanced arc fault protection module designed to enhance electrical system safety by detecting and mitigating dangerous arc faults before they escalate into serious incidents. Engineered with ABB’s proven protection technology, this module is commonly integrated into medium- and low-voltage switchgear systems to improve operational reliability and personnel safety.

By continuously monitoring electrical parameters, the MT-91-ARCFPA provides fast and accurate arc fault detection, helping reduce equipment damage, unplanned downtime, and fire risks in critical power installations.

Key Functional Characteristics

High-speed arc fault detection and response

Designed for seamless integration with ABB protection and control systems

Reliable operation in harsh industrial environments

Minimizes arc energy exposure to protect personnel and equipment

Supports enhanced system selectivity and coordination

Technical Parameters

The following specifications reflect typical application characteristics of the ABB MT-91-ARCFPA:

Structure and Main Components

The MT-91-ARCFPA is built with a compact and modular structure to simplify installation and system integration. Its internal design typically includes:

Arc detection sensors or interfaces

Signal processing and logic control circuitry

Communication terminals for connection with protection relays

Power supply and diagnostic indicators

This modular construction allows flexible configuration within new installations or retrofit projects.

Application Areas

The ABB MT-91-ARCFPA is widely used in environments where electrical safety and system continuity are critical, including:

Industrial manufacturing plants

Power distribution substations

Commercial and high-rise building switchrooms

Data centers and critical infrastructure

Oil, gas, and energy-related facilities

Installation and Maintenance

Installation of the MT-91-ARCFPA is straightforward when integrated into compatible ABB switchgear systems. Proper sensor placement and wiring are essential to ensure accurate arc detection. Once installed, the module requires minimal maintenance, with periodic inspection and functional testing recommended as part of routine electrical system checks.

ABB’s standardized design also supports easier troubleshooting and long-term operational stability.

Additional Advantages

Enhances compliance with international electrical safety standards

Reduces repair costs and downtime after arc fault events

Supports safer working conditions during operation and maintenance

Long service life supported by ABB’s global technical expertise