Legrand DX3 thermal magnetic circuit-breaker with 3-pole, 1A rating, D curve, and 6kA breaking capacity for reliable protection of residential and commercial wiring installations with IP20 finger-safe design.
The Legrand DX3 MCB 3P 1A Curve D is a thermal magnetic circuit-breaker designed to protect wiring installations against overloads and short-circuits. With a 3-pole configuration and 1A rated current, this device provides reliable circuit protection with a D curve tripping characteristic and 6kA breaking capacity at 400V. The circuit-breaker features IP20 finger-safe protection, ensuring safety in residential and small commercial installations. It is mounted on DIN-rail with independent removal capability and comes equipped with dual clamps for secure installation.
This device combines advanced protection features with user-friendly design elements. The MCB includes a label holder for clear circuit identification, with on/off status indicators printed on red and green backgrounds respectively. The D curve characteristic provides optimal protection for circuits with moderate inrush currents, making it suitable for mixed loads. The circuit-breaker can be supplied by copper cable, prong busbar, fork busbar, or Legrand HX3 plug busbar, offering flexible installation options.
Complying with IEC 60898-1 standards for household installations, the DX3 MCB ensures reliable operation across a wide temperature range (-25°C to +70°C). It can be equipped with Legrand DX3 auxiliaries and RCD add-on modules for enhanced functionality. The halogen-free construction demonstrates environmental consciousness while maintaining electrical safety standards. With a rated short-circuit breaking capacity of 10kA at 400V and 25kA at 230V according to IEC 60947-2, this circuit-breaker provides comprehensive protection for modern electrical installations.
Key Features
- 3-pole thermal magnetic circuit-breaker with 1A rated current and D curve tripping characteristic
- 6kA breaking capacity at 400V with 10kA short-circuit breaking capacity per IEC 60947-2 at 400V
- IP20 finger-safe protection ensuring safety in residential and small commercial installations
- DIN-rail mounting with dual independent clamps for secure and flexible installation
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules, and multiple supply options
Technical Specifications
| Specification |
Value |
| Product Type | Thermal Magnetic Circuit-Breaker (MCB) |
| Number of Poles | 3 Poles (3P) |
| Rated Current | 1 A |
| Rated Voltage | 400 V AC |
| Rated Insulation Voltage | 500 V |
| Rated Impulse Withstand Voltage | 4 kV |
| Breaking Capacity (Icn) | 6 kA at 400V per IEC 60898-1 |
| Short-Circuit Breaking Capacity (Icu) | 10 kA at 400V, 25 kA at 230V per IEC 60947-2 |
| Release Characteristic | D Curve (10-14 In) |
| Frequency | 50-60 Hz |
| Degree of Protection | IP20 (Finger-safe) |
| Built-in Depth | 44 mm |
| Width | 53.1 mm |
| Height | 94.8 mm |
| Depth | 77.8 mm |
| Modular Width | 3 Modular Spacings |
| Operating Temperature Range | -25°C to +70°C |
| Storage Temperature Range | -40°C to +70°C |
| Connectable Conductor Cross-Section (Multi-wired) | 1.5-25 mm² |
| Connectable Conductor Cross-Section (Solid-core) | 1.5-35 mm² |
| Connection Type | Screwed Terminal |
| Mounting Method | DIN Rail |
| Impact Strength Rating | IK02 |
| Colour | Grey (RAL 7035) |
| Halogen Free | Yes |
| Pollution Degree | 2 |
| Supply Direction | Top or Bottom |
| Additional Equipment | Yes - Compatible with DX3 auxiliaries and RCD modules |
| Reference Number | 408081 |
| EAN Code | 3245064080811 |
| Carbon Footprint (Manufacturing) | 2.893 kg CO₂ eq. |
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