Professional-grade three-pole circuit breaker with 36kA breaking capacity, C-curve protection, and IP20 finger-safe terminals for reliable electrical system protection and isolation.
The Legrand DX3 three-pole modular thermal-magnetic circuit breaker is a professional-grade electrical protection device designed for residential and small commercial applications. This device delivers an impressive 36kA breaking capacity at 400V AC, making it ideal for protecting and isolating 20A circuits in various electrical systems. The circuit breaker features a C-curve characteristic, which means it trips between 5 and 10 times the rated current in case of short circuits, providing optimal protection against electrical faults while minimizing nuisance trips during normal operation.
This DX3 model is equipped with fully visible breaking contacts and IP20 finger-safe terminals that comply with IEC/EN 60529 standards, ensuring enhanced safety during installation and maintenance. The device can be supplied by copper cable from either the top or bottom side, offering flexible installation options. With a built-in depth of 47mm and width of 80.1mm, it fits seamlessly into standard DIN rail installations. The circuit breaker includes a red/green mechanical indicator that clearly displays the status of the contacts (open or closed), and a label holder for convenient circuit identification.
The product is constructed with halogen-free materials and designed in an environmentally conscious process, meeting substance-restriction requirements. It can be equipped with Legrand DX3 auxiliaries, RCD add-on modules, and various accessories for enhanced functionality. The device is suitable for connectable conductor cross sections ranging from 1.5-50mm² for solid-core cables and 1.5-35mm² for multi-wired cables, making it compatible with various cable types used in modern electrical installations.
Key Features
- 36kA breaking capacity at 400V AC for superior short-circuit protection
- C-curve tripping characteristic (5-10 In) for optimal circuit protection
- IP20 finger-safe terminals compliant with IEC/EN 60529 standards
- Red/green mechanical indicator for clear contact status display
- Fully visible breaking contacts for enhanced safety and reliability
- Compatible with Legrand DX3 auxiliaries and RCD add-on modules
- Halogen-free construction with environmentally conscious design
- Flexible top or bottom copper cable supply options
- Built-in label holder for convenient circuit identification
- DIN rail mounting with 4.5 module width spacing
Technical Specifications
| Specification |
Value |
| Product Type | Three-Pole Modular Thermal-Magnetic Circuit Breaker |
| Rated Current | 20A |
| Breaking Capacity at 400V | 36kA according to IEC 60947-2 |
| Breaking Capacity at 230V | 72kA according to IEC 60947-2 |
| Release Characteristic | C Curve (100A-200A tripping threshold) |
| Rated Voltage | 400V AC |
| Rated Insulation Voltage | 500V |
| Rated Impulse Withstand Voltage | 6kV |
| Voltage Type | AC |
| Frequency Range | 50-60Hz |
| Number of Poles | 3 poles (3 protected poles) |
| Built-in Depth | 47mm |
| Width | 80.1mm |
| Height | 127.5mm |
| Depth | 79.2mm |
| Module Width | 4.5 modular spacings |
| Degree of Protection | IP20 (Finger-safe terminals) |
| Impact Strength | IK02 |
| Pollution Degree | 3 |
| Connectable Conductor Cross Section (Solid-core) | 1.5-50mm² |
| Connectable Conductor Cross Section (Multi-wired) | 1.5-35mm² |
| Connection Type | Screwed terminal and Cable |
| Mounting Method | DIN rail |
| Electric Supplying Direction | Top or bottom |
| Nominal Voltage Range | 360-440V |
| Ambient Temperature Operating Range | -25°C to +70°C |
| Storage Temperature Range | -40°C to +70°C |
| Color | Grey (RAL 7035) |
| Material Composition | Halogen-free |
| Flush-mounted Installation | Yes |
| Concurrently Switching Neutral Conductor | No |
| Additional Equipment Possible | Yes (DX3 auxiliaries, RCD add-on modules) |
| Explosion-proof | No |
| Label Space/Information Surface | Yes |
| Terminal Marking Indication | No |
| Reference Number | 410022 |
| EAN Code | 3245064100229 |
| Carbon Footprint (Manufacturing Phase) | 5.449 kg CO₂ eq. |
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