Residual current circuit breaker EFI-P4 AC 40/0.3 002061632

Safety first – Residual Current Circuit Breaker EFI-P4 AC 40/0.3

This four-pole residual current circuit breaker from ETI POLAM is a key element of any electrical installation, providing protection for people and devices against the effects of electric shock and damage caused by short circuits and overloads. Designed to operate in AC networks, it offers reliable protection in homes, apartments, commercial and industrial buildings.

The EFI-P4 AC 40/0.3 circuit breaker is characterized by a rated current of 40A and a sensitivity of 0.3A, which means it reacts to small leakage currents, minimizing the risk of electric shock. Its short-circuit strength of 10kA guarantees resistance to sudden current surges, and the ability to mount on a DIN rail facilitates installation and integration with the existing system.

#### Functionality and application

Residual current circuit breakers perform a protective function in TN-S, TN-C-S, TT and IT networks. They are essential wherever there is a risk of contact with voltage – both direct and indirect. The rated residual current value (0.3A) makes this model particularly recommended for protecting circuits with higher power demand and where devices generating interference in the electrical network are present. This ensures not only the safety of users but also the stable operation of connected devices.

Using a residual current circuit breaker is not only meeting legal requirements and safety standards (IP20), but above all, it is an investment in peace of mind and protection of life and property. The cross-section of the connecting cable up to 25 mm² allows connection of cables with a large diameter, which is important in installations with a higher load. A width of 4 modules provides compact dimensions and easy mounting in a distribution box.

**Key features:**

• High reliability: Made of high-quality materials, ensuring long-lasting and trouble-free operation.
• Fast reaction: Sensitivity of 0.3A guarantees a quick reaction to leakage currents, minimizing the risk of electric shock.
• Versatility: Designed to operate in various types of electrical networks (TN-S, TN-C-S, TT and IT).
• Easy installation: Possibility of mounting on a DIN rail facilitates installation and integration with the existing system.
• Interference resistance: Adapted to work in environments with a high level of electromagnetic interference.
• Solid construction: Short-circuit strength of 10kA ensures resistance to sudden current surges.
• Clear status: Contact position indicator makes it easy to identify the breaker status (ON/OFF).

Thanks to these features, the EFI-P4 AC 40/0.3 residual current circuit breaker is an optimal solution for both professional installers looking for a reliable component for building safe electrical installations, and for end-users who care about their own safety and the safety of their loved ones.