| Product Reference | 407966 |
| EAN Code | 3245064079662 |
| Brand | Legrand |
| Product Line | DX³ |
| Type | Thermal Magnetic Circuit-Breaker (MCB) |
| Number of Poles | 1 Pole |
| Rated Current | 4A |
| Release Characteristic | D-Curve |
| Rated Voltage | 230V AC |
| Rated Insulation Voltage (Ui) | 500V |
| Rated Impulse Withstand Voltage (Uimp) | 4kV |
| Breaking Capacity (Icn) at 230V | 6kA according to EN 60898 |
| Short-Circuit Breaking Capacity (Icu) at 230V | 10kA according to IEC 60947-2 |
| Short-Circuit Tripping Threshold | 40A to 56A (D-curve: 10 In to 14 In) |
| Frequency Range | 50-60Hz |
| Voltage Type | AC |
| Degree of Protection (IP) | IP20 |
| Degree of Impact Strength (IK) | IK02 |
| Pollution Degree | 2 |
| Connection Type | Screwed Terminal |
| Connectable Conductor Cross-Section (Multi-wired) | 1.5-25mm² |
| Connectable Conductor Cross-Section (Solid-core) | 1.5-35mm² |
| Electric Supplying Direction | Top or Bottom |
| Width (Modular Units) | 1 Unit |
| Width | 17.8mm |
| Height | 94.8mm |
| Depth | 77.8mm (Built-in depth: 44mm) |
| Colour | Grey |
| RAL Number | 7035 |
| Mounting Method | DIN Rail (2 clamps - top and bottom) |
| Flush-mounted Installation | Yes |
| Concurrently Switching Neutral Conductor | No |
| Additional Equipment Possible | Yes |
| Operating Temperature Range | -25°C to +70°C |
| Storage Temperature Range | -40°C to +70°C |
| Halogen Free | Yes |
| Explosion-proof | No |
| Label Space/Information Surface | Yes |
| Carbon Footprint (Manufacturing Phase A1-A3) | 0.939 kg CO₂ eq. |
| Supply Options | Copper cable, prong busbar (top/bottom), fork busbar (bottom), Legrand HX3 plug busbar (top) |
| Compatible Accessories | Legrand DX3 auxiliaries, RCD add-on modules, aluminum cable terminal accessory n° 4 063 10 |
| Standards Compliance | IEC 60898-1, EN 60898, IEC 60947-2, IEC/EN 60529 |