Legrand DX³ four-pole modular circuit breaker with 63A rating, C-curve protection, 25kA breaking capacity, IP20 terminals, and DIN-rail mounting for reliable electrical circuit protection
The Legrand DX³ is a four-pole modular thermal-magnetic circuit breaker designed for comprehensive control, protection, and isolation of electrical circuits. With a rated current of 63A and C-curve performance, this device delivers exceptional breaking capacity of 25kA at 400V, making it ideal for residential and small commercial electrical installations. The circuit breaker features IP20 finger-safe terminals that comply with IEC/EN 60529 standards, ensuring safe operation in DIN-rail mounted applications. Its advanced thermal-magnetic tripping mechanism provides reliable short-circuit protection with tripping thresholds between 315A and 630A, offering superior circuit safety.
This versatile circuit breaker is engineered for compatibility with Legrand DX3 auxiliaries, RCD add-on modules, and comprehensive accessories, allowing for customizable electrical system configurations. The device supports both copper and aluminum cable connections (with appropriate terminal accessories), providing flexible installation options. Featuring a red/green mechanical indicator for clear status display and a convenient label holder for circuit identification, the DX³ ensures easy maintenance and troubleshooting. Built with halogen-free materials and designed through environmentally conscious processes, this circuit breaker meets modern sustainability standards while delivering reliable electrical protection.
The DX³ operates efficiently across a wide ambient temperature range of -25°C to 70°C and supports conductor cross-sections from 1.5mm² to 50mm² for solid-core cables. With a compact built-in depth of 47mm and six modular spacing units, the circuit breaker integrates seamlessly into standard electrical panels. Its robust construction, combined with IK02 impact strength rating and RAL 7035 grey finish, ensures durability and professional appearance in any electrical installation.
Key Features
- Four-pole thermal-magnetic circuit breaker with 63A rated current and C-curve tripping characteristic
- 25kA breaking capacity at 400V with short-circuit protection between 315A and 630A
- IP20 finger-safe terminals compliant with IEC/EN 60529 standards for safe DIN-rail installation
- Red/green mechanical indicator for clear open/closed status display and label holder for circuit identification
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules, and comprehensive accessories
- Supports both copper and aluminum cable connections with flexible conductor cross-sections (1.5-50mm²)
- Halogen-free construction with environmentally conscious design and wide operating temperature range (-25°C to 70°C)
- Compact 47mm built-in depth with six modular spacing units for efficient panel integration
Technical Specifications
| Specification |
Value |
| Product Type | Four-Pole Modular Circuit Breaker |
| Brand | Legrand |
| Model Series | DX³ |
| Reference Number | 409800 |
| EAN Code | 3245064098007 |
| Rated Current | 63 A |
| Rated Voltage | 400 V AC |
| Rated Insulation Voltage | 500 V |
| Rated Impulse Withstand Voltage | 6 kV |
| Breaking Capacity at 230V | 50 kA |
| Breaking Capacity at 400V | 25 kA |
| Trip Characteristic | C-Curve (5-10 In) |
| Short-Circuit Tripping Threshold | Between 315A and 630A |
| Number of Poles | 4 poles |
| Number of Protected Poles | 4 poles |
| Degree of Protection | IP20 (Fingerproof) |
| Impact Strength Rating | IK02 |
| Built-In Depth | 47 mm |
| Width in Modular Units | 6 modules |
| Overall Width | 106.8 mm |
| Overall Height | 127.5 mm |
| Overall Depth | 79.2 mm |
| Operating Temperature Range | -25°C to 70°C |
| Storage Temperature Range | -40°C to 70°C |
| Nominal Voltage Range | 360-440 V |
| Frequency | 50-60 Hz |
| Solid-Core Conductor Cross-Section | 1.5-50 mm² |
| Multi-Wired Conductor Cross-Section | 1.5-35 mm² |
| Connection Type | Screwed Terminal, Cable |
| Supply Direction | Top or Bottom |
| Neutral Conductor Switching | Yes (Concurrently switching) |
| Pollution Degree | 3 |
| Mounting Method | DIN Rail |
| Flush-Mounted Installation | Yes |
| Additional Equipment Possible | Yes |
| Color | Grey |
| RAL Number | 7035 |
| Halogen Free | Yes |
| Explosion-Proof | No |
| Carbon Footprint (Manufacturing) | 8.324 kg CO₂ eq. |
| Compliance Standards | IEC 60947-2, IEC/EN 60529, RoHS Directive |
| Label Space | Yes |
| Mechanical Indicator | Red/Green Status Display |
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