Eaton PFIM-100/4/05A Residual Current Circuit Breaker, 4-Pole, 100A, 500mA, Type AC

The Eaton PFIM-100/4/05A is a robust 4-pole residual current circuit breaker (RCCB) engineered to provide essential electrical safety in demanding environments. Designed for high-capacity power distribution, this device monitors electrical circuits for leakage currents, ensuring rapid disconnection when a fault is detected. Its reliable construction makes it a cornerstone component for maintaining safety standards in industrial and commercial electrical systems.

Advantages

This residual current circuit breaker offers high operational reliability and durability under continuous load conditions. By providing a 100A rated current capacity, it effectively manages significant power demands while maintaining precise sensitivity to leakage currents. The 4-pole configuration allows for versatile integration into three-phase electrical systems, ensuring comprehensive protection across all phases and the neutral conductor. Its design prioritizes safety, helping to mitigate the risk of electrical hazards and equipment damage in complex power networks.

Suitable for

• Industrial electrical installations
• Commercial power distribution boards
• Three-phase electrical systems
• Protection of electrical circuits against leakage currents

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 pulsating DC currents may be 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: 100A
• Rated residual operating current: 500mA
• Device type: AC

How to use

The Eaton PFIM-100/4/05A 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 board. 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 and neutral orientation. 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 500mA sensitivity is appropriate for your specific safety requirements.
• Ensure the 100A rating matches the maximum load of your electrical circuit.
• Confirm that the electrical system does not require protection against DC leakage currents.
• Check the available space in your distribution board for a 4-pole device.

Usage recommendations: Regularly test the residual current circuit breaker using the test button at least every six months to ensure the mechanism remains operational and responsive to fault conditions.