Professional-grade thermal-magnetic circuit breaker with 3-pole configuration, 20A rated current, B-curve protection, and 10kA breaking capacity. Ideal for residential and commercial electrical installations requiring reliable overload and short-circuit protection.
The Legrand DX3 MCB 3P 20A B-Curve is a thermal-magnetic circuit breaker designed to protect wiring installations against overloads and short circuits. This three-pole device features a 20A rated current with B-curve tripping characteristics and 400V AC rating, making it ideal for residential and small commercial applications. With a breaking capacity of 10kA to IEC 60947-2 and 6kA to EN 60898, this circuit breaker provides reliable protection for electrical circuits.
The DX3 series breaker offers advanced protection features including energy limitation class 3 according to IEC 60898-1 standard, ensuring minimal let-through energy during fault conditions. The device features a tripping threshold for short-circuits between 60A and 100A (B curve between 3 In and 5 In), providing precise protection tailored to residential installations. It is IP20 rated for protection against solid bodies larger than 12.5mm (fingerproof), ensuring safety in standard installation environments.
This MCB can be supplied by copper cable, prong busbar, fork busbar, or Legrand HX3 plug busbar, offering flexible installation options. The product is equipped with DIN rail clamps allowing independent removal while the busbar remains in place. It can be equipped with Legrand DX3 auxiliaries and RCD add-on modules, and is compatible with aluminium cables using terminal accessory. The device complies with substance-restriction requirements and has been designed with environmental consciousness in mind.
Key Features
- Three-pole configuration with 20A rated current and B-curve tripping characteristics
- Breaking capacity of 10kA to IEC 60947-2 and 6kA to EN 60898 standards
- Energy limitation class 3 for minimal let-through energy during faults
- IP20 protection rating - fingerproof against solid bodies larger than 12.5mm
- Flexible power supply options: copper cable, prong busbar, fork busbar, or HX3 plug busbar
- DIN rail mounting with independent removal capability
- Compatible with Legrand DX3 auxiliaries and RCD add-on modules
- Label holder for clear circuit identification
- On/Off indication with red and green background markings
- Environmentally conscious design with halogen-free construction
Technical Specifications
| Specification |
Value |
| Product Type | Thermal-Magnetic Circuit Breaker (MCB) |
| Number of Poles | 3 poles |
| Rated Current | 20 A |
| Release Characteristic | B-curve (tripping threshold 60-100A) |
| Rated Voltage | 400 V AC |
| Rated Insulation Voltage | 500 V |
| Impulse Withstand Voltage | 4 kV |
| Breaking Capacity (EN 60898) | 6 kA at 400V |
| Breaking Capacity (IEC 60947-2) | 10 kA at 400V |
| Current Limiting Class | Class 3 |
| Frequency Range | 50-60 Hz |
| Protection Degree (IP) | IP20 |
| Impact Strength (IK) | IK02 |
| Width in Modular Spacings | 3 modules |
| Physical Width | 53.1 mm |
| Physical Height | 94.8 mm |
| Physical Depth | 77.8 mm (built-in depth 44 mm) |
| Connectable Conductor Cross Section (Multi-wired) | 1.5-25 mm² |
| Connectable Conductor Cross Section (Solid-core) | 1.5-35 mm² |
| Connection Type | Screwed terminal |
| Colour | Grey (RAL 7035) |
| Operating Temperature Range | -25 to +70°C |
| Storage Temperature Range | -40 to +70°C |
| Mounting Method | DIN rail |
| Supply Direction | Top or bottom |
| Halogen Free | Yes |
| Pollution Degree | 2 |
| Reference Number | 407562 |
| EAN Code | 3245064075626 |
| Carbon Footprint (Manufacturing) | 2.809 kg CO₂ eq. |
Order Legrand DX3 MCB 3P 20A B-Curve Circuit Breaker | 407562 at wholesale prices for companies and factories in Iraq and Middle East, get the best deals on bulk purchases, contact us today.
