Thermal magnetic circuit-breaker for residential and commercial protection with 6kA breaking capacity, C curve, 4A rated current, 3-pole, 400V AC, IP20 protection, and DIN rail mounting.
The Legrand DX3 MCB 3P 4A is a thermal magnetic circuit-breaker designed to protect wiring installations against overloads and short-circuits. With a breaking capacity of 6kA/10kA and C curve tripping characteristic, this device provides reliable protection for residential and small commercial applications. Rated at 4A, 3-pole, 400V AC, the MCB features IP20 protection rating and is mounted on DIN rail for easy installation and removal. The product complies with IEC 60898-1 standards for household installations and offers energy limitation class 3 according to the same standard.
This circuit-breaker can be supplied via copper cable, prong busbar, fork busbar, or Legrand HX3 plug busbar, providing flexible installation options. It is equipped with two DIN rail clamps on top and bottom sides, allowing independent removal while the prong busbar remains in place. The device features a label holder for clear circuit identification and on/off indication printed on the handle with red and green backgrounds for easy status recognition. With a width of 53.1mm and depth of 77.8mm, it fits standard DIN rail installations.
The MCB can be equipped with Legrand DX3 auxiliaries, RCD add-on modules, and various accessories for enhanced functionality. It is protected against solid bodies larger than 12.5mm (fingerproof) with IP20 rating according to IEC/EN 60529 standard. The device is halogen-free and designed in an environmentally conscious process, complying with substance-restriction requirements including RoHS and REACH directives.
Key Features
- Breaking capacity of 6kA according to IEC 60898-1 standard with C curve tripping characteristic between 5In and 10In
- Flexible supply options via copper cable, prong busbar, fork busbar, or Legrand HX3 plug busbar
- IP20 protection rating against solid bodies larger than 12.5mm with fingerproof design
- Independent removal capability with dual DIN rail clamps on top and bottom sides
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules, and various accessories
- Energy limitation class 3 with maximum let-through energy limitation
- Clear circuit identification with label holder and on/off indication on handle
- Halogen-free and environmentally conscious design with RoHS and REACH compliance
- Rated for -25°C to +70°C ambient temperature during operation
- Rated short-circuit breaking capacity Icu of 25kA at 230V and 10kA at 400V according to IEC 60947-2
Technical Specifications
| Specification |
Value |
| Product Type | Thermal Magnetic Circuit Breaker (MCB) |
| Number of Poles | 3 poles (3P) |
| Rated Current | 4 A |
| Rated Voltage | 400 V AC |
| Rated Insulation Voltage | 500 V |
| Rated Impulse Withstand Voltage | 4 kV |
| Breaking Capacity (Icn) | 6 kA at 400V according to EN 60898 |
| Breaking Capacity (Icu) | 25 kA at 230V, 10 kA at 400V according to IEC 60947-2 |
| Trip Characteristic | C curve (5In to 10In) |
| Current Limiting Class | 3 |
| Degree of Protection | IP20 |
| Impact Strength | IK02 |
| Frequency | 50-60 Hz |
| Operating Temperature Range | -25°C to +70°C |
| Storage Temperature Range | -40°C to +70°C |
| Pollution Degree | 2 |
| Connectable Conductor Cross Section (Multi-wired) | 1.5-25 mm² |
| Connectable Conductor Cross Section (Solid-core) | 1.5-35 mm² |
| Connection Type | Screwed Terminal |
| Width | 53.1 mm (3 modular spacings) |
| Height | 94.8 mm |
| Depth | 77.8 mm |
| Built-in Depth | 44 mm |
| Mounting Method | DIN Rail |
| Supply Options | Copper cable, prong busbar (top/bottom), fork busbar (bottom), Legrand HX3 plug busbar (top) |
| Color | Grey |
| RAL Number | 7035 |
| Halogen Free | Yes |
| Flush-mounted Installation | Yes |
| Neutral Conductor Switching | No |
| Additional Equipment Possible | Yes (DX3 auxiliaries, RCD modules, accessories) |
| Product Carbon Footprint | 2.817 kg CO2 eq (Manufacturing phase A1-A3) |
| Reference Number | 407854 |
| EAN Code | 3245064078542 |
| Standards Compliance | IEC 60898-1, IEC 60947-2, IEC/EN 60529, RoHS, REACH |
Order Legrand DX3 MCB 3P 4A Circuit Breaker 6kA | 407854 at wholesale prices for companies and factories in Iraq and Middle East, get the best deals on bulk purchases, contact us today.
