Distribution board (flush-mounted) Legrand PRACTIBOX S 3x12 white doors 3x1P B16 RX3

Legrand PRACTIBOX S flush-mounted distribution board with three rows of 12 modules (3x12) and white doors provides a compact, organized solution for residential or light commercial electrical installations. The unit is supplied with three 1-pole B16 circuit breakers in RX3 design and is intended to accommodate modular protective devices and accessories, allowing neat wiring, circuit segregation, and basic overcurrent protection at the point of installation.

Advantages

The enclosure features a flush-mounted design for discreet integration into walls and a white door for neutral aesthetics. Pre-fitted single-pole B16 breakers simplify initial installation and reduce the need for immediate additional components. The modular 3x12 layout supports flexible arrangement of breakers, RCDs, and other DIN-rail devices, enabling clear circuit labeling and improved service access.

Suitable for

• Domestic electrical distribution in apartments and houses
• Light commercial premises such as small offices or retail spaces
• Retrofit projects where a flush-mounted board is required for a clean finish
• Installations requiring segmentation of circuits (lighting, sockets, appliances)

Key specifications

• Installation type: flush-mounted modular distribution board
• Number of module rows: 3
• Module capacity per row: 12 modules (total capacity 36 modules)
• Door color and finish: white
• Pre-installed devices: three single-pole B16 circuit breakers (1P, thermal-magnetic)
• Design series: RX3 styling for breakers and modular components
• Mounting: DIN-rail compatible for modular protective devices

How to use

Install the distribution board into a prepared wall recess following local electrical codes and safety regulations. Secure the enclosure, connect the incoming supply to the appropriate terminal block, and distribute outgoing circuits to the slots on the DIN rails. Use the pre-installed B16 breakers for basic circuit protection, and add or replace modular devices as needed to complete the system. Ensure all connections are tightened to the manufacturer’s recommended torque and verify correct circuit labeling before re-energizing.

Usage recommendations

For safety and compliance, installation and any changes to the distribution board should be carried out by a qualified electrician. Verify compatibility of additional DIN-rail devices with the RX3 design and confirm available module space before adding new breakers or protective devices.