LEGRAND DX3 406009

Legrand DX3 Miniature Circuit Breaker Description The Legrand 406009 is a high-performance 2-pole miniature circuit breaker (MCB) from the DX3 series. It is designed to provide dependable protection against short-circuits and overloads in electrical installations. With a D-curve tripping characteristic, it is particularly suitable for circuits with high inrush currents, such as those powering motors or transformers. This device ensures the safety and integrity of your electrical system. Specifications Manufacturer: Legrand Part Number: 406009 Series: DX3 Number of Poles: 2-Pole (2P) Rated Current: 2 A Tripping Curve: D Rated Voltage (AC): 230/400 V Breaking Capacity: 10 kA according to IEC 60947-2 Frequency: 50/60 Hz Mounting: DIN Rail Label Info Brand: Legrand Model: DX3 D2 Part Number: 406009 Breaking Capacity: E6000 / 10kA Application This MCB is commonly used in commercial and industrial distribution boards for the protection of circuits with equipment that generates high starting currents, including motors, transformers, and specific types of lighting ballasts. Country of Origin Made in Italy. CO2 Impact Opting for a refurbished Legrand MCB saves an estimated 8.0 kg of CO2 compared to manufacturing a new one. This choice supports a circular economy and reduces industrial waste. Availability This item is a tested, used component in excellent working condition. Order now from profideals for expert support and fast delivery. FAQ What is the difference between a D-curve and a C-curve circuit breaker?A D-curve breaker, like this one, is designed for high inrush current applications (e.g., motors, transformers) as it trips at 10 to 20 times the rated current. A C-curve breaker is more for general purpose loads (e.g., lighting, outlets) and trips at 5 to 10 times the rated current. What is the breaking capacity of the Legrand 406009 and why is it important?This breaker has a breaking capacity of 10 kA (kiloamperes) according to IEC 60947-2. This is the maximum fault current the breaker can safely interrupt without being destroyed. A higher breaking capacity is crucial for safety in industrial environments where potential fault currents are higher. Can this 2-pole MCB be used in a single-phase system?Yes, a 2-pole MCB is ideal for single-phase applications where both the phase (live) and neutral conductors need to be switched and protected simultaneously. This provides a complete isolation of the circuit for maintenance and safety. profideals is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. Last Update: Friday, March 13, 2026