Residual Current Circuit Breaker P304 4P 40A 300mA Type A TX3 411785

Safety and protection in your electrical installation

Residual Current Device (RCD) P304 is a key element of every modern electrical installation, providing protection for users and equipment against the effects of electric shock and fires. Thanks to its design and operation, this device effectively detects earth leakage currents and quickly disconnects the circuit, minimizing the risk of dangerous situations. This four-pole switch with a rated current of 40A and a sensitivity of 300mA, type A, is a reliable protection for your home or business.

Functionality and application

The P304 switch is designed to protect electrical circuits with a rated voltage of 400V. Its design based on type A technology allows it to detect both sinusoidal alternating and pulsating direct currents, making it a universal solution for various receivers. The device's width of 4 modules makes it easy to install in electrical distribution boards, and the ability to cooperate with additional equipment (auxiliary contacts, release devices) allows it to be adapted to individual needs.

• Protection against electric shock: Fast circuit disconnection in the event of a leakage current minimizes the risk of electric shock to users.
• Fire protection: Detection of short circuits to earth prevents overheating of wires and the occurrence of fires.
• Versatile application: Suitable for securing lighting circuits, socket outlets and electrical receivers in residential, commercial and industrial buildings.
• Easy installation: Compact dimensions (4 modules) and the possibility of mounting on a DIN rail facilitate installation.
• Expandability: Compatibility with DX³ series accessories allows you to adapt the functionality to specific installation requirements.
• Durability: Rated short-circuit strength of 10 kA ensures reliable operation in the event of overloads.

Construction and parameters

The P304 switch is characterized by a solid construction and high quality workmanship. Adapted to work in temperatures from -25°C to 60°C and has a degree of protection IP20, which ensures its reliability in various environmental conditions. The cross-section of the connected single-wire conductor can range from 0.75 mm² to 50 mm², and the multi-wire conductor from 0.75 mm² to 35 mm², which provides flexibility when connecting wires of different thicknesses. Additionally, the switch has a mechanical lock preventing accidental switching on after switching off due to a failure. The rated impulse withstand voltage Uimp is 4 kV, which ensures resistance to overvoltages.