Legrand DX3 2-pole 20A D-curve modular circuit breaker with 25kA breaking capacity, IP20 finger-safe terminals, and flexible connection options for reliable electrical circuit protection and isolation.
The Legrand DX3 2-pole 20A Curve D circuit breaker is a modular thermal-magnetic MCB designed for comprehensive control, protection, and isolation of electrical circuits in residential and small commercial installations. This high-performance device delivers exceptional breaking capacity of 25kA at 400V, with D-curve tripping characteristics that provide reliable short-circuit protection between 200A and 280A. The breaker features IP20 finger-safe terminals for enhanced safety, preventing accidental contact with live components. Built with advanced thermal-magnetic technology, it ensures rapid disconnection during fault conditions while maintaining stable operation under normal circumstances.
Designed for flexibility and ease of installation, the DX3 circuit breaker 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 systems. The device is equipped with dual DIN rail clamps positioned at top and bottom, allowing independent removal without disrupting the main power supply busbar. It incorporates a convenient label holder for clear circuit identification and features color-coded ON/OFF indication on the handle with red and green backgrounds for easy status recognition.
This environmentally conscious product complies with all substance-restriction requirements and RoHS directives. The DX3 can be equipped with Legrand auxiliaries, RCD add-on modules, and various accessories to expand functionality. With an operating temperature range of -25°C to +70°C and support for both solid-core (1.5-35mm²) and multi-wired (1.5-25mm²) conductors, this circuit breaker delivers reliable performance across diverse installation environments. The 44mm built-in depth and 2-module width make it ideal for space-constrained panel installations.
Key Features
- 25kA breaking capacity at 400V with D-curve tripping characteristics for reliable short-circuit protection
- IP20 finger-safe terminals preventing accidental contact with live components
- Dual DIN rail clamps allowing independent removal without disrupting main power supply
- Compatible with multiple connection methods including copper cable, busbar systems, and Legrand HX3 plug busbar
- Color-coded ON/OFF indication on handle with label holder for easy circuit identification
- Supports both solid-core (1.5-35mm²) and multi-wired (1.5-25mm²) conductors
- Operating temperature range of -25°C to +70°C for diverse installation environments
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules, and various accessories
- RoHS compliant and environmentally conscious design
- Compact 44mm built-in depth and 2-module width for space-efficient panel installation
Technical Specifications
| Specification |
Value |
| Product Type | Modular Thermal-Magnetic Circuit Breaker (MCB) |
| Number of Poles | 2 (Bipolar) |
| Rated Current | 20 Amperes |
| Release Characteristic | D-Curve |
| Rated Voltage | 400 Volts AC |
| Rated Insulation Voltage | 500 Volts |
| Rated Impulse Withstand Voltage | 4 kV |
| Breaking Capacity at 400V | 25 kA |
| Breaking Capacity at 230V | 50 kA |
| Short-Circuit Tripping Range | 200A to 280A (D-curve between 10 In and 14 In) |
| Frequency | 50-60 Hz |
| Degree of Protection (IP) | IP20 (Finger-safe) |
| Degree of Impact Strength | IK02 |
| Built-in Depth | 44 mm |
| Width | 35.4 mm |
| Height | 94.8 mm |
| Total Depth | 77.8 mm |
| Module Width | 2 Modular Spacings |
| Connectable Conductor Cross Section (Solid-core) | 1.5-35 mm² |
| Connectable Conductor Cross Section (Multi-wired) | 1.5-25 mm² |
| Connection Type | Screwed Terminal, Busbar and Cable |
| Electric Supplying Direction | Top or Bottom |
| Mounting Method | DIN Rail |
| Flush-mounted Installation | Yes |
| Concurrently Switching Neutral Conductor | No |
| Operating Temperature Range | -25°C to +70°C |
| Storage Temperature Range | -40°C to +70°C |
| Nominal Voltage Range | 360-440 Volts |
| Pollution Degree | 3 |
| Color | Grey (RAL 7035) |
| Halogen Free | Yes |
| Additional Equipment Possible | Yes |
| Explosion-proof | No |
| Label Space | Yes |
| Carbon Footprint (Manufacturing Phase) | 1.869 kg CO2 eq. |
| Reference Number | 409821 |
| EAN Code | 3245064098212 |
| Brand | Legrand |
| Series | DX³ |
| Compliance Standards | IEC 60947-2, IEC/EN 60529, RoHS Directive |
Order Legrand DX3 2P 20A Curve D Circuit Breaker MCB | 409821 at wholesale prices for companies and factories in Iraq and Middle East, get the best deals on bulk purchases, contact us today.
