Legrand DX3 modular bipolar circuit breaker rated 50A with C-curve characteristic, 25kA breaking capacity at 400V, IP20 finger-safe terminals, and DIN rail mounting for reliable electrical circuit protection
The Legrand DX3 MCB 2 Pole 50A Curve C is a modular thermal-magnetic circuit breaker designed for control, protection and isolation of electrical circuits. With a breaking capacity of 25kA at 400V, this device offers reliable performance for residential and small commercial applications. The circuit breaker features a C-curve characteristic, meaning it trips between 5 to 10 times the rated current, making it ideal for circuits with moderate inrush currents. The IP20 finger-safe terminals provide secure DIN rail mounting with protection against solid bodies larger than 12.5mm. Built with environmentally conscious design principles, this device complies with substance-restriction requirements and can be equipped with Legrand DX3 auxiliaries and RCD add-on modules for enhanced functionality.
The DX3 2 Pole 50A features a red/green mechanical indicator that clearly displays the contact status (open or closed), and includes a convenient label holder for circuit identification. The device operates reliably across a wide ambient temperature range from -25°C to +70°C and supports conductor cross-sections from 1.5mm² to 50mm² for solid-core cables and 1.5mm² to 35mm² for multi-wired cables. With a rated voltage of 400V and rated impulse withstand voltage of 6kV, this circuit breaker ensures comprehensive electrical protection. The product can be supplied from either the top or bottom, offering flexible installation options in various electrical configurations.
This modular circuit breaker occupies 3 modular spacings on standard DIN rails and features a grey RAL 7035 finish. It is halogen-free and complies with all relevant safety standards including IEC 60947-2. The device is suitable for flush-mounted installation and offers excellent reliability with a rated short-circuit breaking capacity of 50kA at 230V. Whether for new installations or replacements, the DX3 2 Pole 50A Curve C provides dependable electrical circuit protection with modern safety features.
Key Features
- 25kA breaking capacity at 400V according to IEC 60947-2 standard
- C-curve characteristic with tripping threshold between 250A and 500A (5-10 times rated current)
- IP20 finger-safe terminals protected against solid bodies larger than 12.5mm
- Red/green mechanical indicator displaying contact status (open/closed)
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules and accessories
- Halogen-free design with environmentally conscious manufacturing process
- Wide ambient temperature operating range from -25°C to +70°C
- Flexible top or bottom cable supply connection
- Label holder for convenient circuit identification
- DIN rail mounting with 3 modular spacing width
Technical Specifications
| Specification |
Value |
| Product Type | Modular Thermal-Magnetic Circuit Breaker |
| Number of Poles | 2 poles (bipolar) |
| Rated Current | 50A |
| Release Characteristic | C-curve (5-10 times rated current) |
| Rated Voltage | 400V AC |
| Rated Insulation Voltage | 500V |
| Rated Impulse Withstand Voltage | 6kV |
| Breaking Capacity at 400V | 25kA (Icu) |
| Breaking Capacity at 230V | 50kA (Icu) |
| Frequency | 50-60 Hz |
| Protection Degree | IP20 (finger-safe) |
| Degree of Impact Strength | IK02 |
| Built-in Depth | 47mm |
| Width | 53.4mm |
| Height | 127.5mm |
| Overall Depth | 79.2mm |
| Modular Width | 3 modular spacings |
| Connectable Conductor Cross Section (Solid-core) | 1.5-50mm² |
| Connectable Conductor Cross Section (Multi-wired) | 1.5-35mm² |
| Operating Temperature Range | -25°C to +70°C |
| Storage Temperature Range | -40°C to +70°C |
| Nominal Voltage Range | 360-440V |
| Pollution Degree | 3 |
| Connection Type | Screwed terminal, Cable |
| Supply Direction | Top or bottom |
| Mounting Method | DIN rail |
| Flush-mounted Installation | Yes |
| Colour | Grey |
| RAL Number | 7035 |
| Halogen Free | Yes |
| Additional Equipment Possible | Yes (RCD modules, auxiliaries) |
| Concurrently Switching Neutral Conductor | No |
| Explosion-proof | No |
| Reference Number | 409773 |
| EAN Code | 3245064097734 |
| Carbon Footprint (Manufacturing Phase) | 3.549 kg CO₂ eq. |
| Compliance Standards | IEC 60947-2, IEC/EN 60529, RoHS Directive |
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