Residual current device P 302 2P 80 A 30 mA type AC, DX3 series 411507

Safety and Protection of Electrical Installations

The residual current device (RCD) P 302 2P 80A 30mA AC from the DX3 series is a critical component ensuring safety in every electrical installation. Its purpose is to protect users from electric shock and to safeguard electrical equipment against the consequences of short circuits and overloads. Thanks to its design and parameters, this device provides reliable protection in homes, apartments, as well as commercial and industrial facilities.

Functionality and Applications

The RCD P 302 features a rated current of 80A and a sensitivity to residual current of 30mA, ensuring rapid response in the event of dangerous earth leakage. The AC type indicates that the device effectively detects sinusoidal alternating residual currents—the most common type found in electrical installations. DIN rail mounting (standard TH35) simplifies installation and integration with existing distribution equipment. The two-pole design makes it ideal for protecting single-phase circuits.

Construction and Key Features

The P 302 belongs to the reputable DX³ series by Legrand, known for high build quality and reliability. A mechanical lock prevents accidental re-energizing after the device has tripped due to protection activation. With a width of 2 modules, it enables optimal space utilization in distribution boards. Additionally, compatibility with the HX³ Optimal Energy Distribution system and auxiliary accessories (auxiliary contacts, trip units) enhances functionality and flexibility. The IP20-rated enclosure provides protection against finger contact and ingress of solid objects larger than 12.5 mm. A short-circuit withstand rating of 10kA ensures safe operation during fault conditions. The device accepts single-core conductors from 0.75 to 50 mm² and multi-core conductors from 0.75 to 35 mm², ensuring compatibility with various cable types used in electrical installations.