Legrand DX3 P312 RCBO 2P 25A C-Curve 30mA Type A

The Legrand DX3 P312 is a high-performance 2-pole residual current circuit breaker with overcurrent protection (RCBO), engineered to provide comprehensive electrical safety in residential and commercial environments. This device integrates both short-circuit and overload protection with earth leakage detection in a single compact unit, ensuring that electrical circuits remain protected against common faults while safeguarding users from potential electric shocks.

Advantages

This RCBO offers superior reliability by combining two essential safety functions into one space-saving module, which simplifies installation within distribution boards. The Type A sensitivity ensures detection of both alternating and pulsating direct current leakage, making it suitable for modern electronic equipment. With its robust C-curve tripping characteristic, the device effectively manages inrush currents from inductive loads, preventing nuisance tripping while maintaining high operational standards for electrical infrastructure.

Suitable for

• Residential electrical distribution boards
• Commercial office building circuits
• Protection of lighting and power socket circuits
• Equipment containing electronic components sensitive to DC leakage

This device may not be suitable for industrial applications requiring higher breaking capacities or specific environmental protections not covered by standard residential and commercial ratings. It is also not intended for use in circuits where the total load exceeds the 25A rated current capacity.

Key specifications

• Number of poles: 2
• Rated current: 25A
• Tripping characteristic: C-curve
• Residual current sensitivity: 30mA
• Type: A

The device should be installed by a qualified electrician in accordance with local electrical regulations. It is mounted onto a standard DIN rail within an enclosure. Once installed, the test button should be pressed periodically to verify the mechanical functionality of the tripping mechanism.

What to consider before purchase

• Verify that the 25A rating matches your circuit load requirements
• Ensure the 30mA sensitivity is appropriate for the intended level of personnel protection
• Confirm compatibility with existing DIN rail distribution board layouts

For optimal safety and performance, perform a manual test of the RCBO using the integrated test button at least every six months to ensure the internal mechanism remains responsive.