Residual current device P 302 2P 80 A 30 mA Type A DX3 series 411557

Protection and Safety in Your Electrical Installation

This two-pole residual current device (RCD) from Legrand’s DX³ series is a critical component ensuring safety in every electrical circuit. Designed to protect people and equipment from the effects of electric shock and to prevent fires caused by insulation damage or short circuits, it operates by rapidly detecting leakage currents and disconnecting the circuit when the permissible threshold is exceeded.

The P 302 2P model, rated at 80 A and with a sensitivity of 30 mA (Type A), is ideal for safeguarding high-load circuits such as general-purpose sockets, lighting, and electrical appliances. Type A indicates that the device responds to both sinusoidal alternating currents and pulsating DC currents, significantly expanding its range of applications.

Construction and Installation – Robustness and Easy Setup

The RCD is designed for DIN rail mounting, ensuring stability and seamless integration into existing distribution boards. Its compact dimensions—just 2 modules wide—allow efficient use of space within the distribution cabinet. The robust construction using high-quality materials guarantees long-term, reliable operation. Additionally, the device features a lockout mechanism that prevents accidental re-energizing after tripping.

The rated impulse voltage withstand of 4 kV and short-circuit withstand capacity of 10 kA confirm the device’s resilience against sudden voltage fluctuations and overloads. The terminal accepts single-core conductors up to 50 mm² and multi-core conductors up to 35 mm², ensuring compatibility with various cable types used in electrical installations. The operating ambient temperature range of -25°C to 60°C enables use in a wide variety of environmental conditions.

Functionality and Compliance with Standards

The P 302 is equipped with a test button, enabling regular verification of proper functionality—a simple yet essential step to ensure the protection system operates as intended. The device complies with EN 61008-1, guaranteeing conformity with European safety standards. The IP20 protection rating provides defense against finger contact but does not protect against water or dust ingress—therefore, the RCD must be installed in dry, enclosed environments.