Legrand 412657 circuit breaker

The Legrand 412657 circuit breaker provides reliable protection for residential and light commercial electrical installations. With compact dimensions of 85 mm width, 100 mm depth, and 60 mm height, this single-module device is designed to fit standard distribution panels and enclosures. It interrupts fault currents to protect wiring and connected equipment against overloads and short circuits while maintaining stable performance under normal conditions.

Advantages

This circuit breaker combines compact size with robust switching capability, allowing installation in tight panel spaces without compromising safety. Its build quality ensures consistent tripping performance and repeatability, and the design supports straightforward integration with common DIN-rail systems and panel layouts. The device offers predictable operation characteristics and reliable mechanical endurance for routine electrical protection tasks.

Suitable for

Key specifications

How to use

Install the breaker in the distribution board following local electrical codes and the panel manufacturer's instructions. Ensure the device is mounted securely on the DIN-rail or in the panel space provided, with proper connection of phase and neutral conductors and correct tightness of terminal screws. Verify that the breaker rating and characteristics match the circuit requirements before energizing. After installation, switch the breaker to the ON position and test the protected circuit for correct operation using appropriate test procedures.

Recommendations

Use this breaker as part of a complete protection scheme together with appropriate residual-current devices, upstream protection, and correct wiring practices. Periodically inspect terminal tightness and visual condition; perform functional testing after installation and following maintenance or modifications to the electrical installation.