Professional thermal magnetic circuit breaker with 3P 63A capacity, B-curve characteristic, 6kA/10kA breaking capacity, IP20 fingerproof protection, and advanced current limiting technology for reliable electrical installation protection.
The Legrand DX3 MCB 6000A is a professional-grade thermal magnetic circuit breaker designed to protect wiring installations against overloads and short-circuits. This 3-pole 63A device operates at 400V with a B-curve characteristic and features a 6kA/10kA breaking capacity, ensuring reliable control and isolation for residential and small commercial applications. The circuit breaker is equipped with IP20 fingerproof safety protection, meeting IEC 60898-1 standards for household installations. It can be supplied via copper cable, prong busbar, fork busbar, or Legrand HX3 plug busbar connections, offering flexible installation options. The device is compatible with Legrand DX3 auxiliaries, RCD add-on modules, and various accessories for enhanced functionality and system integration.
This MCB features advanced current limiting technology (Class 3) to minimize let-through energy during fault conditions, providing superior protection for connected equipment. The thermal magnetic release mechanism ensures precise tripping thresholds between 189A and 315A for short-circuit protection, while thermal protection handles overload conditions. The product includes a convenient label holder for circuit identification and clear ON/OFF indication printed on the handle with red and green backgrounds for easy status recognition. With dimensions of 53.1mm width and 77.8mm depth, it occupies 3 modular spacings on standard DIN rails and features two independent clamps allowing removal without affecting other connected devices.
Designed with environmental consciousness, this circuit breaker is halogen-free and complies with substance-restriction requirements including RoHS and REACH directives. The product operates reliably across ambient temperatures from -25°C to 70°C and supports both multi-wired (1.5-25mm²) and solid-core (1.5-35mm²) conductor connections. Its robust construction ensures durability with IK02 impact strength rating, making it suitable for demanding installation environments. The DX3 series represents Legrand's commitment to safety, reliability, and compliance with international electrical standards.
Key Features
- Thermal magnetic protection with B-curve tripping characteristic for precise overload and short-circuit detection
- 6kA/10kA rated short-circuit breaking capacity compliant with IEC 60898-1 household installation standards
- IP20 fingerproof safety protection preventing accidental contact with live components
- Advanced Class 3 current limiting technology minimizing let-through energy during fault conditions
- Flexible connection options supporting copper cable, prong busbar, fork busbar, and Legrand HX3 plug busbar
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules, and system accessories
- Convenient label holder with clear ON/OFF indication for easy circuit identification and status monitoring
- Independent dual DIN rail clamps allowing safe removal without affecting connected circuits
- Halogen-free design with RoHS and REACH compliance for environmental responsibility
- Wide operating temperature range from -25°C to 70°C ensuring reliable performance in various conditions
Technical Specifications
| Specification |
Value |
| Product Type | Thermal Magnetic Circuit Breaker (MCB) |
| Number of Poles | 3 Poles (3P) |
| Rated Current | 63 Amperes |
| Rated Voltage | 400V AC |
| Voltage Type | Alternating Current (AC) |
| Release Characteristic | B-Curve (3-5 In) |
| Short-Circuit Breaking Capacity (Icn) | 6 kA at 400V (IEC 60898) |
| Short-Circuit Breaking Capacity (Icu) | 10 kA at 400V (IEC 60947-2) |
| Short-Circuit Breaking Capacity (Icu) | 25 kA at 230V (IEC 60947-2) |
| Current Limiting Class | Class 3 |
| Short-Circuit Tripping Threshold | 189A to 315A (B-curve: 3-5 In) |
| Rated Insulation Voltage (Ui) | 500V |
| Rated Impulse Withstand Voltage (Uimp) | 4 kV |
| Frequency Range | 50-60 Hz |
| Degree of Protection | IP20 (Fingerproof) |
| Impact Strength Rating | IK02 |
| Modular Width | 3 Modular Spacings |
| Built-in Depth | 44 mm |
| Width | 53.1 mm |
| Height | 94.8 mm |
| Depth | 77.8 mm |
| Color | Grey (RAL 7035) |
| Multi-wired Conductor Cross-Section | 1.5-25 mm² |
| Solid-Core Conductor Cross-Section | 1.5-35 mm² |
| Connection Type | Screwed Terminal |
| Supply Direction | Top or Bottom |
| Mounting Method | DIN Rail |
| Pollution Degree | 2 |
| Operating Temperature Range | -25°C to +70°C |
| Storage Temperature Range | -40°C to +70°C |
| Neutral Conductor Switching | No |
| Flush-Mounted Installation | Yes |
| Additional Equipment Possible | Yes (RCD modules, auxiliaries, accessories) |
| Halogen-Free | Yes |
| Explosion-Proof | No |
| Label Space | Yes |
| Reference Number | 407567 |
| EAN Code | 3245064075671 |
| Product Carbon Footprint (Manufacturing) | 3.103 kg CO₂ eq. |
| Compliance Standards | IEC 60898-1, IEC 60947-2, IEC/EN 60529, RoHS, REACH |
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