Legrand 419171 MCB RX³ 3P 25A Curve B 6kA DIN Rail

The Legrand 419171 is an RX³ miniature circuit breaker (MCB), 3-pole, rated 25 A on the B tripping curve, for 400 V installations. It has a short-circuit breaking capacity of 6 kA per IEC 60898-1, occupies 3 modules on a DIN rail, and provides overcurrent and short-circuit protection for residential and small-commercial distribution circuits.

Technical specifications:

• Catalog reference: 419171
• Manufacturer: Legrand
• EAN: 3414970367334
• Dimensions (W × H × D): 53.1 × 88.5 × 77.8 mm
• breaking capacity: 6000 A (IEC 60898-1)
• tripping curve: B (3-5 In, 75-125 A)
• release characteristic: B
• Number of poles: 3
• Rated current (In): 25 A
• Rated voltage: 400 V
• Rated insulation voltage (Ui): 500 V
• Rated impulse withstand voltage (Uimp): 4 kV
• short circuit breaking capacity icn 230v: 10 kA
• short circuit breaking capacity icn 400v: 6 kA
• Frequency: 50-60 Hz
• current limiting class: 3
• Pollution degree: 2
• Width (modules): 3
• Degree of protection (IP): IP20
• built in depth mm: 44
• Impact resistance (IK): IK02
• Storage temperature: -40 to 70 °C
• Operating voltage range: 360-440 V
• Colour: Grey
• RAL reference: 7035
• Connection type: Screwed terminal, Busbar and cable
• Mounting: DIN rail
• Standards: IEC 60898-1

Features and benefits:

• Thermal-magnetic tripping provides reliable protection against overloads and short circuits.
• Class 3 energy limitation per IEC 60898-1 minimises let-through energy during a fault.
• Accepts copper cable, prong busbar, or fork busbar for flexible distribution-board assembly.
• Compact 1-module-per-pole footprint suits dense modular enclosures.

Applications:

• Final circuit protection for residential and small-commercial distribution boards up to 25 A.
• Lighting, socket-outlet and small-appliance feeders requiring C-curve tripping behaviour.
• Series coordination with upstream RCDs in TT and TN-S supply systems.
• Modular distribution enclosures conforming to IEC 60898-1.

Also known as: Legrand 419171, 419171, RX³ LEGRAND.