Professional-grade 3-pole 10A circuit breaker with 25kA breaking capacity, C-curve protection, IP20 finger-safe terminals, and DIN rail mounting for reliable electrical circuit protection and isolation.
The Legrand DX³ three-pole modular thermal-magnetic circuit breaker is a professional-grade electrical protection device designed for control, protection, and isolation of electrical circuits. This advanced MCB offers a robust 25kA breaking capacity at 400V~ and features a C-curve characteristic that provides tripping thresholds between 5In and 10In for short-circuit protection. The device is engineered with IP20 finger-safe terminals ensuring safe operation in various electrical environments, and is compatible with DX³ auxiliaries and RCD add-on modules for enhanced functionality.
This circuit breaker is built with premium construction standards including halogen-free materials and environmentally conscious design processes. It features flexible connection options via copper cable, prong busbar (top or bottom side), fork busbar (bottom side), or Legrand HX3 plug busbar (top side). The DIN rail mounting system includes two independent clamps allowing removal without affecting the prong busbar supply, making maintenance and installation straightforward for qualified electricians.
With its C-curve release characteristic and 10A rated current at 400V, this three-pole MCB is ideal for residential and small commercial panel applications. The device complies with IEC 60947-2 standards and includes comprehensive safety features such as on/off indication printed on the handle with red and green backgrounds, a label holder for circuit identification, and protection against solid bodies larger than 12.5mm.
Key Features
- 25kA breaking capacity at 400V with C-curve characteristic for reliable short-circuit protection
- IP20 finger-safe terminals protecting against solid bodies larger than 12.5mm
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules and accessories
- Flexible connection options: copper cable, prong busbar, fork busbar, or HX3 plug busbar
- Independent DIN rail clamps allowing removal without affecting main busbar supply
- Halogen-free construction with environmentally conscious design process
- Clear on/off indication with red and green background markings on handle
- Integrated label holder for convenient circuit identification
- Rated for 400V AC with 50-60Hz frequency operation
- Compact 3-pole design for residential and small commercial applications
Technical Specifications
| Specification |
Value |
| Product Type | Three-Pole Modular Thermal-Magnetic Circuit Breaker |
| Rated Current | 10A |
| Rated Voltage | 400V AC |
| Release Characteristic | C-Curve (5In to 10In) |
| Breaking Capacity at 400V | 25kA |
| Breaking Capacity at 230V | 50kA |
| Rated Insulation Voltage | 500V |
| Rated Impulse Withstand Voltage | 4kV |
| Frequency Range | 50-60Hz |
| Number of Poles | 3 (Total and Protected) |
| Degree of Protection | IP20 |
| Impact Strength Rating | IK02 |
| Built-in Depth | 44mm |
| Width | 53.1mm |
| Height | 94.8mm |
| Total Depth | 77.8mm |
| Modular Width | 3 modular spacings |
| Color | Grey (RAL 7035) |
| Connectable Conductor Cross Section (Multi-wired) | 1.5-25mm² |
| Connectable Conductor Cross Section (Solid-core) | 1.5-35mm² |
| Operating Temperature Range | -25 to +70°C |
| Storage Temperature Range | -40 to +70°C |
| Nominal Voltage Range | 360-440V |
| Pollution Degree | 3 |
| Connection Type | Screwed Terminal, Busbar and Cable |
| Supply Direction | Top or Bottom |
| Mounting Method | DIN Rail |
| Concurrent Neutral Switching | No |
| Additional Equipment Possible | Yes |
| Halogen Free | Yes |
| Explosion-proof | No |
| Flush-mounted Installation | Yes |
| Label Space Available | Yes |
| Reference Number | 409780 |
| EAN Code | 3245064097802 |
| Carbon Footprint (Manufacturing) | 2.940 kg CO₂ eq. |
| Compliance Standards | IEC 60947-2, IEC/EN 60529 |
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