Residual Current Circuit Breaker P304 4P 40A 30mA Type A TX3 411765

Residual Current Device (RCD) from the P304 series is a key element of any electrical installation, ensuring the safety of users and protecting devices from the effects of short circuits and electric shock. This four-pole model, with a rated current of 40A and a differential current of 30mA, is characterized by its high efficiency and reliability. It is a type A device, which means it reacts to both sinusoidal alternating and pulsating DC differential currents – providing protection in a wide range of applications.

The design of the RCD has been carefully thought out for easy mounting and connection of wires. The bottom latch and terminal block covers significantly facilitate the work of installers. Additionally, the ability to cooperate with auxiliary devices – such as auxiliary contacts or releases – expands the functionality of the RCD and allows it to be adapted to the specific needs of a given installation.

This model also features a high short-circuit strength of 10kA, which guarantees its stable operation even in the event of large voltage surges. A wide range of wire cross-sections, both solid-core (0.75-50 mm²) and stranded (0.75-35 mm²), ensures compatibility with various types of cabling. The RCD has a mechanical lock, preventing accidental switching on after switching off due to protection tripping.

• Safety first: Provides effective protection against electric shock thanks to type A sensitivity.
• Versatile application: Suitable for securing circuits in residential, commercial and industrial buildings.
• Easy installation: Design with bottom latch and terminal block covers makes installation easier and faster.
• Expandability: Compatible with DX³ series auxiliary devices, allowing customization to individual needs.
• High durability: Withstands short circuits up to 10kA, ensuring reliable operation in difficult conditions.
• Wide range of wires: Supports wires with a cross-section from 0.75 mm² to 50 mm², providing flexibility in cable selection.

The P304 RCD complies with EN 61008-1 standard and has a protection degree of IP20, which means protection against touching with a finger and solid objects larger than 12.5 mm. The device operates at a rated voltage of 400V and a frequency of 50Hz, and its width is 4 modules (71.2mm). The ambient temperature in operating conditions is in the range of -25°C to 60°C, which allows it to be used in various environmental conditions.