Premium three-pole thermal-magnetic circuit breaker with 100A rating, 10000A breaking capacity, C-curve protection, and IP20 terminals for reliable electrical circuit protection in residential and commercial applications.
The Legrand DX³ MCB DX3 10000A is a premium three-pole modular thermal-magnetic circuit breaker designed for comprehensive control, protection, and isolation of electrical circuits in residential and small commercial applications. This advanced protective device delivers exceptional performance with a 10000A breaking capacity according to IEC 60898-1 standard for household installations and 16kA breaking capacity according to IEC 60947-2 standard. The C-curve tripping characteristic provides optimal protection with a tripping threshold between 500A and 1000A (C curve between 5 In and 10 In), ensuring reliable circuit protection against overloads and short circuits.
This circuit breaker features a robust construction with IP20 rated terminals that protect against solid bodies larger than 12.5mm, meeting IEC/EN 60529 standards for safety and reliability. The visible breaking mechanism allows clear status indication through a red/green mechanical indicator displaying open or closed contact positions. The device is equipped with a label holder for convenient circuit identification and can be supplied by copper cable from either the top or bottom side. With a rated current of 100A and rated voltage of 400V, this breaker is suitable for a wide range of electrical applications requiring dependable overcurrent protection.
The DX³ circuit breaker is fully compatible with Legrand DX3 auxiliaries, RCD add-on modules, and accessories, providing flexibility for system expansion and customization. The halogen-free construction demonstrates environmental consciousness, while the device complies with substance-restriction requirements. Built for professional installation on DIN rail systems, this 4.5-module width breaker offers superior reliability with an ambient operating temperature range of -25°C to 70°C and storage capabilities from -40°C to 70°C. The 53.1mm width and 77.8mm depth ensure compact integration into standard electrical panels.
Key Features
- 10000A breaking capacity per IEC 60898-1 for household installations and 16kA per IEC 60947-2
- C-curve tripping characteristic with 500A-1000A threshold for optimal overload and short-circuit protection
- IP20 rated terminals protecting against solid bodies larger than 12.5mm per IEC/EN 60529
- Red/green mechanical indicator for clear open/closed status visibility
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules, and system accessories
- Halogen-free construction demonstrating environmental responsibility
- DIN rail mounting with 4.5 module width for compact panel integration
- Visible breaking mechanism for manual control and circuit isolation
- Label holder for convenient circuit identification and organization
- Rated voltage 400V AC with 500V insulation and 4kV impulse withstand capability
Technical Specifications
| Specification |
Value |
| Product Type | Three-Pole Modular Thermal-Magnetic Circuit Breaker |
| Brand | Legrand |
| Series | DX³ |
| Reference Number | 409281 |
| EAN Code | 3245064092814 |
| Rated Current | 100 A |
| Rated Voltage | 400 V AC |
| Rated Insulation Voltage | 500 V |
| Rated Impulse Withstand Voltage | 4 kV |
| Breaking Capacity (IEC 60898-1) | 10 kA at 400 V |
| Breaking Capacity (IEC 60947-2 at 400V) | 16 kA |
| Breaking Capacity (IEC 60947-2 at 230V) | 32 kA |
| Release Characteristic | C-Curve |
| Tripping Threshold | 500A to 1000A (C curve 5 In to 10 In) |
| Number of Poles (Total) | 3 |
| Number of Protected Poles | 3 |
| Degree of Protection | IP20 |
| Frequency Range | 50-60 Hz |
| Ambient Operating Temperature | -25°C to 70°C |
| Storage Temperature | -40°C to 70°C |
| Width (Module Count) | 4.5 modular spacings |
| Width (Dimension) | 53.1 mm |
| Height | 94.8 mm |
| Built-in Depth | 47 mm |
| Total Depth | 77.8 mm |
| Impact Strength Degree | IK02 |
| Connectable Conductor Cross-Section (Solid-Core) | 6-70 mm² |
| Connectable Conductor Cross-Section (Multi-Wired) | 6-50 mm² |
| Connection Type | Screwed Terminal |
| Electric Supplying Direction | Top or Bottom |
| Mounting Method | DIN Rail |
| Flush-Mounted Installation | Yes |
| Concurrently Switching Neutral Conductor | No |
| Pollution Degree | 3 |
| Additional Equipment Possible | Yes |
| Colour | Grey |
| RAL Number | 7035 |
| Halogen Free | Yes |
| Explosion-Proof | No |
| Label Space/Information Surface | Yes |
| Carbon Footprint (Manufacturing Phase A1-A3) | 4.966 kg CO₂ eq. |
| Visible Breaking | Yes |
| Mechanical Indicator | Red/Green Status Display |
| Cable Supply Options | Copper cable from top or bottom side |
| Aluminium Cable Compatibility | Yes, with terminal accessory 4063 11 |
| Regulatory Compliance | IEC 60898-1, IEC 60947-2, IEC/EN 60529, RoHS Directive |
| Warranty | Standard manufacturer warranty; unauthorized opening cancels warranty |
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