Residual current circuit breaker P 312 2P C 20 A 30 mA Type A, DX3 series 411062

Protection and reliability in one device

This two-pole residual current circuit breaker P 312 from the DX3 series is a key component ensuring safety in electrical installations. It combines the functions of an overcurrent breaker and residual current device, providing comprehensive protection against the consequences of short circuits, overloads, and electric shocks. Both installers and end users can rely on dependable protection of circuits.

Functionality and specifications

The breaker features a rated current of 20 A and a residual current sensitivity of 30 mA, making it an ideal solution for protecting medium-load circuits. The C characteristic ensures delayed tripping during brief overloads, which is especially important for devices with motors or other components generating high inrush currents. Type A guarantees effective detection of earth leakage currents, protecting against electric shock hazards.

The breaker’s design is optimized for easy DIN rail TH35 mounting—its width is only 2 modules, saving valuable space in the distribution board. Additionally, it includes a mechanical lock that prevents accidental re-energizing after a fault-induced trip. The rated short-circuit breaking capacity is 6 kA, ensuring effective protection in the event of a short circuit.

User comfort and compliance with standards

Equipped with a test button, it allows regular verification of the residual current device’s functionality—a simple procedure to confirm proper operation. Constructed from high-quality materials, it complies with IEC/EN 61009-1 and EN 61009 standards, guaranteeing safety and reliable performance. The IP20 protection rating safeguards against finger contact and ingress of solid objects larger than 12 mm. Designed for operation at 230 V and 50 Hz. Supports conductor cross-sections from 0.75 mm² to 16 mm² (single-core) or from 0.75 mm² to 10 mm² (multi-core), ensuring installation flexibility.