Thermal magnetic circuit breaker with 2-pole 20A B curve protection, 6kA breaking capacity, IP20 safety rating, and DIN rail mounting for household installations.
The Legrand DX3 MCB 2P 20A B Curve is a thermal magnetic circuit breaker designed to protect wiring installations against overloads and short-circuits. This device features a 2-pole configuration with a rated current of 20A and B curve characteristic, providing reliable protection with a breaking capacity of 6kA according to IEC 60898-1 standard for household installations. The circuit breaker offers IP20 safety rating, protecting against solid bodies larger than 12.5mm, and is mounted on DIN rail for easy installation and removal. It can be supplied by copper cable, prong busbar, fork busbar, or Legrand HX3 plug busbar, making it versatile for various installation scenarios.
This MCB is equipped with advanced features including maximum energy limitation (energy limitation class 3), compatibility with Legrand DX3 auxiliaries and RCD add-on modules, and the ability to connect to aluminum cable with optional terminal accessories. The device includes a label holder for clear circuit identification and on/off indication printed on the handle with red and green backgrounds for easy status recognition. Built-in depth of 44mm and modular spacing of 2 units allow efficient panel integration. The product complies with substance-restriction requirements and has been designed with environmental consciousness, featuring halogen-free construction.
With rated voltage of 400V AC and rated insulation voltage of 500V, this circuit breaker operates reliably at frequencies between 50-60Hz. The tripping threshold for short-circuit is between 60A and 100A (B curve between 3In and 5In), providing optimal protection for residential and small commercial applications. The device is designed for top or bottom electric supply direction and features screwed terminal connections for secure installation. Storage temperature range of -40 to 70°C and operating temperature range of -25 to 70°C ensure reliable performance in various environmental conditions.
Key Features
- 2-pole configuration with 20A rated current and B curve characteristic for optimal protection
- Breaking capacity of 6kA according to IEC 60898-1 standard with short-circuit tripping between 60A and 100A
- IP20 protection rating - fingerproof against solid bodies larger than 12.5mm
- Energy limitation class 3 for maximum let-through energy limitation
- DIN rail mounting with independent removal capability via dual clamps
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules and accessories
- Label holder with on/off indication on red and green backgrounds for easy identification
- Accepts copper cable, prong busbar, fork busbar, or Legrand HX3 plug busbar supply
- Halogen-free construction with environmentally conscious design
- Rated voltage 400V AC with 500V insulation voltage and 4kV impulse withstand
Technical Specifications
| Specification |
Value |
| Product Type | Thermal Magnetic Circuit Breaker (MCB) |
| Brand | Legrand |
| Series | DX3 |
| Reference Number | 407510 |
| EAN Code | 3245064075107 |
| Number of Poles | 2 poles (2P) |
| Rated Current | 20 Amperes |
| Release Characteristic | B Curve |
| Rated Voltage | 400V AC |
| Rated Insulation Voltage | 500V |
| Rated Impulse Withstand Voltage | 4 kV |
| Breaking Capacity (Icn) | 6 kA at 400V according to EN 60898 |
| Breaking Capacity (Icu) at 230V | 25 kA according to IEC 60947-2 |
| Breaking Capacity (Icu) at 400V | 10 kA according to IEC 60947-2 |
| Short-Circuit Tripping Threshold | 60A to 100A (B curve between 3In and 5In) |
| Current Limiting Class | Class 3 |
| Degree of Protection | IP20 (Fingerproof) |
| Degree of Impact Strength | IK02 |
| Frequency Range | 50-60 Hz |
| Voltage Type | AC |
| Modular Width | 2 modular spacings (35.4 mm) |
| Built-in Depth | 44 mm |
| Height | 94.8 mm |
| Total Depth | 77.8 mm |
| Mounting Method | DIN Rail |
| Connection Type | Screwed Terminal |
| Connectable Conductor Cross Section (Multi-wired) | 1.5-25 mm² |
| Connectable Conductor Cross Section (Solid-core) | 1.5-35 mm² |
| Electric Supply Direction | Top or Bottom |
| Concurrent Switching of Neutral | No |
| Flush-mounted Installation | Yes |
| Additional Equipment Possible | Yes |
| Pollution Degree | 2 |
| Operating Temperature Range | -25°C to +70°C |
| Storage Temperature Range | -40°C to +70°C |
| Colour | Grey |
| RAL Number | 7035 |
| Halogen Free | Yes |
| Explosion-proof | No |
| Label Space | Yes |
| Carbon Footprint (Manufacturing Phase) | 1.730 kg CO2 eq. |
Order Legrand DX3 MCB 2P 20A B Curve Circuit Breaker | 407510 at wholesale prices for companies and factories in Iraq and Middle East, get the best deals on bulk purchases, contact us today.
