Eaton PF6-40/4/05-A Residual Current Circuit Breaker 4P 40A 500mA Type A

The Eaton PF6-40/4/05-A is a high-performance 4-pole residual current circuit breaker (RCCB) engineered to provide essential electrical safety in both residential and industrial power distribution systems. This device is specifically designed to monitor electrical circuits for leakage currents, automatically disconnecting the power supply when a fault is detected to prevent hazardous situations and protect connected equipment from damage.

Advantages

This circuit breaker offers robust protection by utilizing Type A technology, which allows it to detect both standard alternating current (AC) residual currents and pulsating direct current (DC) components. Its 40A rated current and 500mA sensitivity threshold make it a reliable choice for installations where higher leakage current thresholds are required to prevent nuisance tripping while maintaining a high level of safety. The durable construction ensures long-term operational stability in demanding electrical environments.

Suitable for

• Industrial electrical distribution boards
• Large residential electrical installations
• Protection of equipment sensitive to pulsating DC currents
• Systems requiring high-threshold earth fault protection

When it may not be suitable

This device is not intended for applications requiring high-sensitivity protection, such as direct contact protection for people, which typically requires a 30mA threshold. It is also not suitable for DC-only electrical circuits or specialized high-frequency power systems.

Key specifications

• Number of poles: 4
• Rated current: 40A
• Rated residual operating current: 500mA
• Protection type: Type A

How to use

The Eaton PF6-40/4/05-A must be installed by a qualified electrician in accordance with local electrical regulations. It is designed for mounting 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 properly wired to the output terminals. 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 40A rating matches the load capacity of your circuit
• Confirm compatibility with your existing distribution board and DIN rail system

Usage recommendations

Regularly test the circuit breaker using the built-in test button at least every six months to ensure the mechanism remains functional and responsive to fault conditions.