Eaton PF6-40/4/03-A Residual Current Circuit Breaker 4P 40A 300mA Type A

The Eaton PF6-40/4/03-A is a high-performance 4-pole residual current circuit breaker (RCCB) engineered to enhance electrical safety in various environments. This device is designed to detect leakage currents and automatically disconnect the circuit, thereby preventing potential electric shocks and mitigating fire risks caused by insulation faults. With its robust construction and reliable tripping mechanism, it serves as a critical safety component for modern electrical distribution systems.

Advantages

This residual current circuit breaker offers superior protection by identifying both alternating current (AC) and pulsating direct current (DC) residual currents, which makes it a versatile Type A device suitable for modern electronic loads. Its design ensures high operational reliability and long-term durability, even in demanding electrical installations. The unit is easy to integrate into standard distribution boards, providing a seamless solution for maintaining safety standards in residential, commercial, and industrial settings.

Suitable for

• Residential electrical distribution boards
• Commercial building power systems
• Industrial equipment protection
• Circuits containing electronic components such as power supplies or frequency converters

When it may not be suitable

This device is not intended for use in circuits where the leakage current exceeds the 300mA threshold, as it may cause nuisance tripping. It is also not a substitute for miniature circuit breakers, as it does not provide protection against overcurrent or short-circuit conditions.

Key specifications

• Number of poles: 4
• Rated current: 40A
• Rated residual operating current: 300mA
• Device type: Type A
• Mounting type: DIN rail

How to use

The Eaton RCCB should 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. Once installed, the device should be connected to the incoming power supply and the outgoing load circuits. It is recommended to test the device periodically using the integrated test button to ensure the mechanical tripping mechanism remains functional.

What to consider before purchase

• Ensure the rated current matches your circuit requirements
• Verify that the 300mA sensitivity is appropriate for your specific application
• Confirm that the installation space accommodates a 4-pole device

Usage recommendations

Regularly press the test button at least twice a year to verify the operational integrity of the residual current circuit breaker. If the device trips unexpectedly, inspect the connected equipment for insulation faults before resetting.