Residual Current Circuit Breaker P304 4P 40A 300mA TYPE AC TX3 411728

Safety and reliability in your electrical installation

The P304 TX3 residual current circuit breaker is a key element ensuring the protection of people and property against the effects of electric shock and fires caused by short circuits and leakage currents. The device, manufactured by the renowned Legrand company, combines advanced technology with ease of installation and use. It is an ideal solution for both professional installers and demanding end users.

Functionality and parameters

Four-pole circuit breaker with a rated current of 40A and a residual current of 300mA, designed for operation in AC (alternating current) circuits. Its construction based on the DIN rail standard facilitates integration with the existing distribution board. The short-circuit capacity at 10kA guarantees an effective response in the event of a dangerous situation. The width of the device – 4 modules – allows for optimal use of space in the distribution cabinet.

The P304 TX3 circuit breaker is characterized by high resistance to interference and stable operation in a wide temperature range (from -25°C to 60°C). It has a mechanical lock, preventing accidental disconnection, which increases safety. Additionally, the ability to cooperate with DX³ series accessories (auxiliary contacts, release units) allows you to adapt the functionality to the individual needs of the installation.

Installation and application

The circuit breaker is intuitive to install and does not require specialized tools. Wires with a cross-section from 0.75 mm² to 50 mm² (solid) or from 0.75 mm² to 35 mm² (stranded) can be easily connected using screw terminals or comb busbars. The circuit breaker is used in electrical installations of residential buildings, commercial premises and industrial facilities, where protection against electric shock and fire is required. It is particularly recommended for protecting circuits powering devices with higher power or exposed to moisture.

• Protection against electric shock: Fast detection and disconnection of the circuit in the event of a current leakage to earth.
• Fire protection: Minimizing the risk of fire caused by damage to cable insulation.
• Versatility: Can be used in various types of electrical installations.
• Easy installation: Quick and simple installation on a DIN rail.
• Expandability: Compatibility with DX³ series accessories.
• Durability: High quality workmanship guarantees long-lasting and trouble-free operation of the device.
• Compliance with standards: Meets the requirements of EN 61008-1 standard, ensuring safety of use.
• High short-circuit capacity: Provides effective protection even with high short-circuit currents (10kA).