Professional three-pole 20A C-curve circuit breaker with 25kA breaking capacity, IP20 terminals, and compact 3-module DIN rail design for reliable electrical circuit protection and isolation.
The Legrand DX³ is a professional-grade three-pole modular thermal-magnetic circuit breaker designed for comprehensive control, protection, and isolation of electrical circuits in residential and small commercial applications. With an impressive 25kA breaking capacity at 400V~, this device offers reliable short-circuit protection with a C-curve characteristic that provides tripping thresholds between 100A and 200A (5 to 10 times the rated current). The compact 3-module design ensures efficient DIN rail mounting while maintaining space optimization in electrical panels.
This circuit breaker features advanced protective capabilities including IP20 fingerproof terminals that comply with IEC/EN 60529 standards, protecting against solid bodies larger than 12.5mm. The device can be supplied through multiple connection methods including copper cable, prong busbar (top or bottom side), fork busbar (bottom side), or Legrand HX3 plug busbar (top side), providing flexible installation options. It accommodates conductor cross-sections from 1.5-25mm² for multi-wired cables and 1.5-35mm² for solid-core conductors.
The DX³ 20A circuit breaker is equipped with a label holder for clear circuit identification and features on/off indication printed on the handle with red and green backgrounds for easy status recognition. It supports additional Legrand DX3 auxiliaries, RCD add-on modules, and accessories, making it highly adaptable to various electrical system requirements. Operating across 50-60 Hz frequencies with a rated voltage of 400V and insulation voltage of 500V, this device maintains performance in ambient temperatures ranging from -25°C to 70°C. The product is halogen-free and environmentally conscious, meeting all substance-restriction requirements.
Key Features
- 25kA breaking capacity at 400V with C-curve tripping characteristic (100A-200A)
- IP20 fingerproof terminals protecting against solid bodies larger than 12.5mm
- Flexible connection options: copper cable, prong busbar, fork busbar, or HX3 plug busbar
- Compact 3-module DIN rail design with independent removal capability
- Clear circuit identification with label holder and color-coded on/off indication
- Compatible with Legrand DX3 auxiliaries and RCD add-on modules
- Wide conductor compatibility: 1.5-35mm² solid-core and 1.5-25mm² multi-wired
- Halogen-free and environmentally conscious design
- Operating temperature range: -25°C to 70°C
- 50-60 Hz frequency operation with 500V insulation voltage
Technical Specifications
| Specification |
Value |
| Product Type | Three-Pole Modular Circuit Breaker |
| Rated Current | 20 Amperes |
| Release Characteristic | C Curve (100A-200A tripping threshold) |
| Breaking Capacity at 400V | 25 kA |
| Breaking Capacity at 230V | 50 kA |
| Rated Voltage | 400V AC |
| Insulation Voltage | 500V |
| Impulse Withstand Voltage | 4 kV |
| Frequency Range | 50-60 Hz |
| Number of Poles (Total) | 3 |
| Number of Protected Poles | 3 |
| Module Width | 3 modules |
| Depth | 44 mm |
| Width | 53.1 mm |
| Height | 94.8 mm |
| Overall Depth | 77.8 mm |
| Degree of Protection | IP20 |
| Impact Strength | IK02 |
| Conductor Cross Section (Solid-Core) | 1.5-35 mm² |
| Conductor Cross Section (Multi-Wired) | 1.5-25 mm² |
| Connection Type | Screwed terminal, Busbar and cable |
| Mounting Method | DIN Rail |
| Operating Temperature Range | -25°C to 70°C |
| Storage Temperature Range | -40°C to 70°C |
| Nominal Voltage Range | 360-440V |
| Supply Direction | Top or bottom |
| Color | Grey (RAL 7035) |
| Halogen Free | Yes |
| Pollution Degree | 3 |
| Additional Equipment | Possible |
| Flush-Mounted Installation | Yes |
| Concurrently Switching Neutral | No |
| Label Space | Yes |
| Carbon Footprint (Manufacturing) | 2.981 kg CO2 eq. |
| Product Reference | 409782 |
| EAN Code | 3245064097826 |
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