Eaton FRCmM-125/4/01 Residual Current Circuit Breaker 4P 125A 100mA Type AC

The Eaton FRCmM-125/4/01 is a high-performance 4-pole residual current circuit breaker (RCCB) engineered to provide robust electrical safety in demanding environments. This device is specifically designed to detect and interrupt leakage currents, thereby protecting both personnel and electrical infrastructure from potential hazards. With a substantial rated current of 125A and a sensitivity threshold of 100mA, it serves as a reliable component in power distribution systems where safety and operational continuity are paramount.

Advantages

This residual current circuit breaker offers exceptional reliability and durability, meeting stringent safety standards for industrial and commercial applications. Its 4-pole configuration allows for versatile integration into three-phase systems, ensuring comprehensive protection across all phases. The device is built to withstand significant electrical loads, making it an ideal choice for heavy-duty installations that require consistent performance and rapid response times in the event of a fault.

Suitable for

• Industrial power distribution boards
• Commercial building electrical systems
• Protection of heavy machinery and equipment
• General electrical safety in large-scale facilities

When it may not be suitable

This device is a Type AC RCCB, which is designed for detecting sinusoidal AC residual currents. It is not suitable for circuits where DC components or high-frequency pulses are present, such as those involving certain types of variable frequency drives or advanced power electronics. For such applications, a Type A or Type B device would be required.

Key specifications

• Number of poles: 4
• Rated current: 125A
• Rated residual operating current: 100mA
• Type: AC

How to use

The Eaton FRCmM-125/4/01 must be installed by a qualified electrician in accordance with local electrical regulations. It is typically mounted on a standard DIN rail within a distribution cabinet. Ensure that the supply cables are correctly connected to the input terminals and that the load is connected to the output terminals, observing the correct phase sequence. After installation, the device should be tested using the integrated test button to verify its mechanical and electrical functionality.

What to consider before purchase

• Verify that the 100mA sensitivity meets the specific safety requirements of your installation.
• Ensure the 125A rated current is compatible with your main circuit load.
• Confirm that the installation environment is suitable for a Type AC device.
• Check the available space in your distribution board for a 4-pole module.

Usage recommendations

Regularly test the device using the built-in test button at least every six months to ensure the mechanism remains operational and provides continuous protection for your electrical system.