Residual-current circuit breaker Legrand Dx3 4P 63A (model 406487)

The LEGRAND 406487 Dx3 4-pole switch rated 63 A is a modular device intended for distribution boards and industrial control panels. It provides reliable switching of multi-phase circuits and is compatible with standard rail mounting for electrical cabinets. Designed by Legrand, model 406487 suits installations where a compact, DIN-rail mounted mechanical switch is required.

Advantages

This 4P 63A switch offers clear pole separation and a compact modular design that saves space in switchgear. Its rated current of 63 A supports heavy single- and three-phase loads, and the product follows Legrand manufacturing standards for mechanical robustness and installation compatibility. The unit’s modular format simplifies replacement and integration into existing Dx3 series assemblies.

Suitable for

Key specifications

How to use

Install the switch into the distribution board on the appropriate DIN rail position, ensuring the rail and enclosure are de-energized before work. Connect incoming and outgoing conductors to the corresponding pole terminals, tighten terminal screws to the manufacturer’s torque specifications, and verify correct wiring. After mounting, restore power and test switching operation under no-load conditions before connecting full loads.

Recommendations

Use this Legrand Dx3 4P 63A switch in accordance with local electrical codes and the Legrand installation instructions. Ensure protective devices (fuses or breakers) and correct conductor sizes are selected for 63 A service. For maintenance or replacement, isolate the circuit and follow safe work procedures.