Professional-grade 3-pole 40A circuit-breaker with C curve characteristic, 6kA breaking capacity, and IP20 protection for reliable electrical installation control and overload protection.
The Legrand DX3 MCB 3P 40A C Curve is a thermal magnetic circuit-breaker designed to protect wiring installations against overloads and short-circuits while providing control and isolation capabilities. This device features 3 poles with a 40A rated current and C curve characteristic at 400V~, delivering a 6kA/10kA breaking capacity. With IP20 protection rating and DIN-rail mounting, it offers fingerproof protection against solid bodies larger than 12.5mm. The device is manufactured with environmental consciousness and complies with substance-restriction requirements.
This circuit-breaker is equipped with two DIN rail clamps positioned at the top and bottom, allowing independent removal when the prong busbar is still in place. It features a label holder for clear circuit identification and On/Off indication printed on the handle with red and green backgrounds for easy status recognition. The MCB can be supplied by copper cable, prong busbar, fork busbar, or Legrand HX3 plug busbar, and is compatible with Legrand DX3 auxiliaries, RCD add-on modules, and various accessories.
With a breaking capacity of 6000A according to IEC 60898-1 standard, the device provides maximum energy limitation (class 3). It operates at frequencies of 50-60Hz and maintains performance across ambient temperatures from -25°C to 70°C. The current limiting class 3 ensures superior protection, while the halogen-free construction makes it environmentally friendly. Installation should be performed by qualified electricians in compliance with local installation rules.
Key Features
- 3-pole thermal magnetic circuit-breaker with 40A rated current and C curve characteristic
- 6kA/10kA breaking capacity with current limiting class 3 for maximum energy limitation
- IP20 fingerproof protection against solid bodies larger than 12.5mm
- DIN-rail mounting with dual top and bottom clamps for independent removal
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules and accessories
- Label holder with On/Off indication for easy circuit identification and status recognition
- Operates at 400V~ with 50-60Hz frequency and -25°C to 70°C ambient temperature range
- Halogen-free construction compliant with substance-restriction requirements
- Can be supplied by copper cable, prong busbar, fork busbar or Legrand HX3 plug busbar
- Connectable to aluminum cable with optional terminal accessory
Technical Specifications
| Specification |
Value |
| Product Type | Thermal Magnetic Circuit-Breaker (MCB) |
| Number of Poles | 3 poles (3P) |
| Rated Current | 40 A |
| Release Characteristic | C curve |
| Rated Voltage | 400 V AC |
| Rated Insulation Voltage | 500 V |
| Rated Impulse Withstand Voltage | 4 kV |
| Breaking Capacity (Icn) at 400V | 6 kA |
| Breaking Capacity (Icu) at 230V | 25 kA |
| Breaking Capacity (Icu) at 400V | 10 kA |
| Current Limiting Class | 3 |
| Frequency | 50-60 Hz |
| Degree of Protection | IP20 |
| Degree of Impact Strength | IK02 |
| Width (Modular Spacings) | 3 modules |
| Width | 53.1 mm |
| Height | 94.8 mm |
| Built-in Depth | 44 mm |
| Overall Depth | 77.8 mm |
| Ambient Temperature (Operating) | -25°C to 70°C |
| Storage Temperature | -40°C to 70°C |
| Connectable Conductor Cross-Section (Multi-wired) | 1.5-25 mm² |
| Connectable Conductor Cross-Section (Solid-core) | 1.5-35 mm² |
| Connection Type | Screwed terminal |
| Mounting Method | DIN rail |
| Color | Grey |
| RAL Number | 7035 |
| Halogen Free | Yes |
| Pollution Degree | 2 |
| Concurrently Switching Neutral Conductor | No |
| Additional Equipment Possible | Yes |
| Flush-mounted Installation | Yes |
| Explosion-proof | No |
| Electric Supplying Direction | By the top or bottom |
| Label Space/Information Surface | Yes |
| Carbon Footprint (Manufacturing Phase) | 2.881 kg CO2 eq. |
| Reference Number | 407863 |
| EAN Code | 3245064078634 |
| Tripping Threshold (Short-Circuit) | 200A to 400A (C curve between 5 In and 10 In) |
| Supply Options | Copper cable, prong busbar, fork busbar, Legrand HX3 plug busbar |
Order Legrand DX3 MCB 3P 40A C Curve Circuit Breaker | 407863 at wholesale prices for companies and factories in Iraq and Middle East, get the best deals on bulk purchases, contact us today.
