Residual current circuit breaker P312 2P B 16A 30mA TYPE A DX3 410965

Residual Current Circuit Breaker – Protection and Convenience in One Device

This two-pole residual current circuit breaker from the P312 DX³ series by Legrand is a reliable solution providing comprehensive protection for electrical installations. It combines the functions of an overcurrent circuit breaker and a residual current device, protecting against the effects of overloads, short circuits, and electric shock. It is an ideal solution for both installers and end-users who value safety and functionality.

Design and Application

The P312 DX³ circuit breaker is designed for mounting on a TH35 rail. Its compact dimensions – only 2 modules wide – allow for efficient use of space in the distribution board. The device is characterized by a high short-circuit capacity of up to 6 kA, which guarantees effective protection even in the event of high short-circuit currents. It is intended for operation in circuits with a voltage of 230 V and a frequency of 50 Hz. Thanks to its B characteristic, the circuit breaker reacts quickly to current increase but is resistant to short-term surges, which is particularly important when connecting devices with electric motors. Type A ensures the detection of both sinusoidal alternating and pulsating DC differential currents, which increases the level of safety.

Key Features and Benefits

• Combination of two functions: Protection against electric shock and overloads/short circuits in one device – saving space in the distribution board and simplifying installation.

• High short-circuit capacity: 6 kA guarantees effective protection of the installation even in difficult conditions.

• B characteristic: Fast reaction to current increase, but resistance to short-term surges – ideal for protecting circuits with devices with high inrush current (e.g., motors).

• Type A: Detection of both sinusoidal alternating and pulsating DC currents - provides comprehensive protection against dangerous leakage currents.

• Test button: Allows regular checking of the correct operation of the residual current device – increases the sense of security.

• HX³ compatibility: Possibility of integration with the HX³ Energy Optimal Distribution System up to 125 A – a modern solution for advanced electrical installations.

• Wide connection range: Possibility of connecting wires with a cross-section from 0.75 mm² to 16 mm² (solid) and from 0.75 mm² to 10 mm² (stranded) – flexibility when choosing wires.

• Lock: Provides additional safety during maintenance or repair of the electrical installation.

The P312 DX³ circuit breaker is an investment in the safety and comfort of using the electrical installation. Its reliability and functionality will be appreciated by professional installers during installation, as well as by end-users benefiting from safe and stable power supply.