Residual current circuit breaker P 312 2P B 16 A 10 mA type AC, DX3 series 410907

Protection and convenience in one – Legrand DX³ residual current circuit breaker

This two-pole residual current circuit breaker from Legrand’s DX³ series combines protection against electric shock with protection against overloads and short circuits. It is an ideal solution for ensuring safety in electrical installations, both in residential and commercial buildings. The device is designed for operation at 230V voltage and a rated current of 16A, providing reliable protection for medium-load circuits.

Functionality and installation

The breaker features a compact design, occupying only 2 module widths. Installation is performed on a standard TH35 rail, simplifying and accelerating installation. Additionally, the device includes a lock to prevent accidental disconnection. The conductor cross-sections compatible with this breaker range from 0.75 mm² to 16 mm² for single-core cables and from 0.75 mm² to 10 mm² for multi-core cables.

Characteristics and applications

The P 312 breaker with B characteristic responds rapidly to current surges, providing effective protection against short circuits. This is especially important in circuits with devices featuring high inrush currents, such as electric motors or transformers. The AC sensitivity means the device detects sinusoidal leakage currents, ensuring protection against electric shock. The rated residual current of 10 mA guarantees a high level of user safety. The short-circuit breaking capacity reaches up to 6 kA, ensuring protection of the installation even during severe faults. The IP20 protection rating guards against finger contact and ingress of solid objects larger than 12.5 mm.

In addition, DX³ breakers are compatible with the HX³ Optimal Energy Distribution System, enabling wireless integration into electrical installations, and are compatible with a wide range of accessories – auxiliary contacts, signaling contacts, or trip units – allowing their functionality to be customized to specific installation needs. The device also features a test button for regular verification of proper operation.