Professional-grade 4-pole 10A thermal-magnetic circuit breaker with 50kA breaking capacity, C curve protection, IP20 safety terminals, and full DX3 compatibility for reliable electrical circuit protection.
The Legrand DX3 MCB 4 Pole 10A Curve C is a high-performance modular thermal-magnetic circuit breaker designed for comprehensive control, protection, and isolation of electrical circuits in residential and small commercial applications. This advanced protective device delivers exceptional breaking capacity of 50kA at 400V~, ensuring reliable protection against short circuits and overcurrent conditions. The circuit breaker features a C curve tripping characteristic that provides optimal protection for general-purpose circuits with moderate inrush currents, making it ideal for standard lighting, heating, and motor circuits.
Equipped with IP20 finger-safe terminals, this device ensures safe installation and operation while preventing accidental contact with live conductors. The DX3 features a red/green mechanical indicator that clearly displays the status of contacts (open or closed), providing instant visual confirmation of circuit status. With a built-in label holder for convenient circuit identification, this modular breaker integrates seamlessly into DX3 distribution panels and is fully compatible with DX3 auxiliaries, RCD add-on modules, and accessories. The device is constructed from halogen-free materials and meets all environmental compliance requirements.
The thermal-magnetic design combines the benefits of both thermal overload protection for sustained overcurrents and magnetic protection for instantaneous short-circuit detection. With a rated voltage of 400V and insulation voltage of 500V, this four-pole breaker simultaneously switches the neutral conductor, providing comprehensive circuit protection. Installation is straightforward via DIN rail mounting, and the device can be supplied from either the top or bottom, offering maximum installation flexibility. The 6-module width design fits standard distribution panels, making it an essential component for modern electrical installations.
Key Features
- 50kA breaking capacity at 400V for superior short-circuit protection and reliability
- C curve thermal-magnetic tripping characteristic ideal for general-purpose circuits with moderate inrush currents
- IP20 finger-safe terminals preventing accidental contact with live conductors
- Red/green mechanical status indicator displaying open/closed contact position clearly
- Full compatibility with DX3 auxiliaries, RCD add-on modules, and complete accessory range
- Halogen-free construction meeting environmental compliance and sustainability requirements
- Simultaneous neutral conductor switching for comprehensive circuit protection
- DIN rail mounting with flexible top or bottom supply connection options
- Built-in label holder for convenient and clear circuit identification
- 6-module width design fitting standard distribution panels seamlessly
Technical Specifications
| Specification |
Value |
| Product Type | Modular Thermal-Magnetic Circuit Breaker |
| Number of Poles | 4 poles (4P) |
| Rated Current | 10 Amperes |
| Tripping Characteristic | C curve (5-10 In threshold) |
| Breaking Capacity at 400V | 50 kA (IEC 60947-2) |
| Breaking Capacity at 230V | 100 kA (IEC 60947-2) |
| Rated Voltage | 400V AC |
| Nominal Voltage Range | 360-440V |
| Insulation Voltage | 500V |
| Impulse Withstand Voltage | 6 kV |
| Frequency | 50-60 Hz |
| Degree of Protection | IP20 (finger-safe terminals) |
| Impact Strength Rating | IK02 |
| Terminal Type | Screwed terminal with cable connection |
| Connectable Conductor Cross Section (solid-core) | 1.5-50 mm² |
| Connectable Conductor Cross Section (multi-wired) | 1.5-35 mm² |
| Supply Direction | Top or bottom connection |
| Neutral Conductor Switching | Concurrent switching of neutral conductor |
| Mounting Method | DIN rail mounting |
| Module Width | 6 modular spacings |
| Built-in Depth | 47 mm |
| Physical Width | 106.8 mm |
| Physical Height | 127.5 mm |
| Physical Depth | 79.2 mm |
| Operating Temperature Range | -25°C to +70°C |
| Storage Temperature Range | -40°C to +70°C |
| Pollution Degree | 3 |
| Material Composition | Halogen-free |
| Color | Grey (RAL 7035) |
| Status Indicator | Red/green mechanical indicator |
| Label Space | Integrated label holder |
| Flush-mounted Installation | Yes |
| Additional Equipment Compatible | Yes - DX3 auxiliaries and RCD add-on modules |
| Reference Number | 410173 |
| EAN Code | 3245064101738 |
| Carbon Footprint (Manufacturing) | 6.572 kg CO₂ eq. |
| Environmental Certification | RoHS compliant, PEP certified |
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