Residual current device P 304 4P 80 A 300 mA type AC, DX3 series 411725

Advanced Protection for Electrical Installations with Legrand P 304 DX³ Residual Current Device

This four-pole residual current device from Legrand’s DX³ series, rated at 80A and with a sensitivity of 300mA (Type AC), is a critical component ensuring safety in any electrical installation. The device effectively protects against electric shock and prevents fires caused by leakage currents. Its robust construction and high manufacturing quality guarantee reliable long-term operation.

The P 304 DX³ is designed with both professional installers and end-users in mind. DIN-rail mounting is fast and intuitive, while its compact dimensions (4 modules wide) allow easy integration into existing distribution boards. The built-in test button enables regular verification of the device’s functionality, which is essential for maintaining full safety.

Functionality and Applications

The residual current device P 304 DX³ provides reliable protection in circuits with a rated current of 80A. Its AC-type technology ensures effective protection against sinusoidal leakage currents, typical of most household and industrial appliances. The short-circuit breaking capacity of 10 kA guarantees safe disconnection in the event of a short circuit.

• Electric shock protection: Rapidly disconnects the circuit upon detection of leakage current, minimizing the risk of electric shock to users.
• Fire protection: Prevents fires caused by overloads or faults in the electrical installation.
• Wide application: Ideal for protecting lighting circuits, socket outlets, and electrical equipment in residential, commercial, and industrial buildings.
• Compatibility: Compatible with the HX³ Optimal Power Distribution System up to 125 A, facilitating seamless integration into modern electrical installations.
• Expandability: Compatible with DX³ series accessories such as auxiliary contacts and trip units, allowing customization to meet individual requirements.

Design Features and Specifications

The P 304 DX³ is characterized by high build quality and durability. The housing is made from materials resistant to mechanical damage and environmental conditions (IP20), ensuring long-term reliability. Its 4-module width enables efficient use of space within the distribution board.

• Connected conductor cross-section: Accepts single-core conductors from 0.75 mm² to 50 mm² and multi-core conductors from 0.75 mm² to 35 mm².
• Ambient temperature range: Safe operation from -25°C to +60°C.
• Rated insulation voltage (Ui): 500 V – ensures adequate electrical insulation.
• Rated impulse withstand voltage (Uimp): 4 kV – resistance to impulse overvoltages.
• With lock: Provides additional safety during maintenance and repair of electrical installations.