Legrand TX3 circuit breaker Miniature circuit breaker Type B 3

LEGRAND 403404 TX3 LS B25A 3p 6kA 3M is a three-pole miniature circuit breaker rated 25 A with a type B tripping characteristic, intended for protection of electrical circuits against overloads and short circuits. The device is part of the TX3 range, has a 3-module width for compact installation on a standard DIN rail, and a rated breaking capacity of 6 kA suitable for typical residential and light commercial distribution boards.

Advantages

The LEGRAND TX3 LS B25A provides clear and consistent protection with a defined B25A rating for circuits that require a type B characteristic. Its three-pole design ensures simultaneous disconnection of all phases, reducing the risk of unbalanced phase conditions. The 3M width allows space-efficient mounting in distribution panels, and the 6 kA breaking capacity delivers reliable interruption of fault currents within the device's rated limits.

Suitable for

Key specifications

How to use

Mount the circuit breaker on a standard DIN rail inside the electrical distribution board following applicable wiring regulations. Connect the incoming and outgoing phase conductors to the corresponding terminals, observe the manufacturer's recommended tightening torque and prepare conductors correctly. Use the device to protect branch circuits that match the B25A characteristic, and verify correct operation by switching the breaker on and off under no-load conditions after installation.

Recommendations

Check system voltage compatibility and coordination with upstream protective devices before installation. Selection and wiring should be performed or verified by a qualified electrician to ensure compliance with local electrical codes and safety requirements.