Thermal magnetic circuit-breaker with 3-pole, 3A B curve, 400V rating, and 6kA/10kA breaking capacity for reliable wiring protection with IP20 safety.
The Legrand DX3 MCB 6000A is a thermal magnetic circuit-breaker designed to protect wiring installations against overloads and short-circuits. With a 3-pole configuration rated at 3A with B curve characteristics and 400V~ rating, this device offers exceptional performance and safety. It delivers a 6kA/10kA breaking capacity according to IEC 60898-1 standard for household installations, making it ideal for residential and small commercial applications. The device features IP20 'fingerproof' safety protection against solid bodies larger than 12.5mm, ensuring maximum safety in any installation environment.
This MCB is equipped with two DIN rail clamps positioned on the top and bottom sides, allowing independent removal when the prong busbar supplying the row remains in place. The device can be supplied by copper cable, prong busbar (top or bottom side), fork busbar (bottom side), or Legrand HX3 plug busbar (top side). It features a label holder for clear circuit identification and On/Off indication printed on the handle with red and green backgrounds for easy status identification. The tripping threshold in case of short-circuit ranges between 9A and 15A (B curve between 3 In and 5 In), providing reliable protection.
The product complies with all substance-restriction requirements and has been designed in an environmentally conscious process. It can be equipped with Legrand DX3 auxiliaries, RCD add-on modules, and various accessories. The device achieves maximum level of limitation of let-through energy with energy limitation class 3 according to IEC 60898-1 standard. With its halogen-free construction, compact dimensions (53.1mm width, 94.8mm height, 77.8mm depth), and grey RAL 7035 color, this MCB represents the pinnacle of modern electrical protection technology.
Key Features
- Thermal magnetic protection against overloads and short-circuits with B curve characteristics
- 6kA breaking capacity per IEC 60898-1 and 10kA at 400V per IEC 60947-2
- IP20 fingerproof safety protection against solid bodies larger than 12.5mm
- DIN rail mounted with independent top and bottom clamps for easy removal
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules and accessories
- Energy limitation class 3 for maximum let-through energy control
- Label holder with clear On/Off indication in red and green backgrounds
- Halogen-free construction with environmentally conscious design
- Connectable to copper cables (1.5-35mm² solid-core or 1.5-25mm² multi-wired)
- Rated impulse withstand voltage of 4kV with 500V insulation rating
Technical Specifications
| Specification |
Value |
| Product Type | Thermal Magnetic Circuit Breaker (MCB) |
| Number of Poles | 3 poles (3P) |
| Rated Current | 3 Amperes |
| Release Characteristic | B curve (tripping between 3In and 5In) |
| Rated Voltage | 400V AC |
| Rated Insulation Voltage | 500V |
| Rated Impulse Withstand Voltage | 4 kV |
| Breaking Capacity (Icn) | 6 kA at 400V per IEC 60898-1 |
| Breaking Capacity (Icu) | 10 kA at 400V per IEC 60947-2 |
| Short-circuit Tripping Threshold | 9A to 15A |
| Current Limiting Class | Class 3 |
| Degree of Protection | IP20 (fingerproof) |
| Degree of Impact Strength | IK02 |
| Width | 53.1 mm (3 modular spacings) |
| Height | 94.8 mm |
| Depth | 77.8 mm (built-in depth 44mm) |
| Color | Grey (RAL 7035) |
| Connection Type | Screwed terminal |
| Connectable Conductor Cross Section (Solid-core) | 1.5 to 35 mm² |
| Connectable Conductor Cross Section (Multi-wired) | 1.5 to 25 mm² |
| Mounting Method | DIN rail (top and bottom clamps) |
| Frequency Range | 50-60 Hz |
| Operating Temperature Range | -25°C to +70°C |
| Storage Temperature Range | -40°C to +70°C |
| Pollution Degree | 2 |
| Supply Direction | By top or bottom |
| Halogen Free | Yes |
| Flush-mounted Installation | Yes |
| Additional Equipment Possible | Yes (DX3 auxiliaries, RCD modules) |
| Reference Number | 407556 |
| EAN Code | 3245064075565 |
| Carbon Footprint (Manufacturing) | 2.836 kg CO₂ eq. |
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