Professional 4-pole circuit breaker with 63A capacity, 50kA breaking capacity, D-curve protection, and IP20 finger-safe terminals for reliable electrical circuit protection in residential and commercial applications
The Legrand DX3 4-pole modular thermal-magnetic circuit breaker is a professional-grade electrical protection device designed for control, protection, and isolation of electrical circuits in residential and small commercial installations. This advanced circuit breaker delivers exceptional performance with a 50kA breaking capacity at 400V~, making it suitable for demanding applications requiring reliable fault protection. The device features a D-curve characteristic with a tripping threshold between 630A and 882A (10-14 In), providing optimal protection against short circuits while minimizing nuisance trips during normal operation.
Equipped with IP20 finger-safe terminals, the DX3 ensures safe installation and operation while protecting against solid bodies larger than 12.5mm. The circuit breaker features a red/green mechanical indicator that clearly displays the open or closed status of contacts, and includes a convenient label holder for circuit identification. With a built-in depth of 47mm and mounting on a 6-module DIN rail spacing, this compact device integrates seamlessly into distribution panels. The product complies with IEC 60947-2 standards and can be equipped with Legrand DX3 auxiliaries, RCD add-on modules, and various accessories for enhanced functionality.
Designed with environmental consciousness, the DX3 meets substance-restriction requirements and is halogen-free, making it an eco-friendly choice for modern electrical installations. The device operates reliably across a wide ambient temperature range from -25°C to 70°C and supports both top and bottom cable supply configurations. Whether used in new installations or retrofits, the Legrand DX3 4-pole circuit breaker provides dependable electrical protection with professional-grade reliability and compliance with international standards.
Key Features
- 50kA breaking capacity at 400V~ provides superior fault protection for demanding applications
- D-curve characteristic with 630-882A tripping threshold (10-14 In) ensures optimal protection without nuisance trips
- IP20 finger-safe terminals protect against solid bodies larger than 12.5mm for safe installation
- Red/green mechanical indicator displays open/closed contact status clearly and visibly
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules, and comprehensive accessory range
- Halogen-free and environmentally conscious design meets substance-restriction requirements
- Supports both top and bottom cable supply configurations for flexible installation
- 6-module DIN rail mounting with 47mm built-in depth for compact panel integration
- Wide operating temperature range -25°C to 70°C ensures reliable year-round performance
- Complies with IEC 60947-2 international standards for circuit breaker protection
Technical Specifications
| Specification |
Value |
| Product Type | Modular Thermal-Magnetic Circuit Breaker |
| Number of Poles | 4 poles (4 protected poles) |
| Rated Current | 63 A |
| Rated Voltage | 400 V AC |
| Rated Insulation Voltage | 500 V |
| Rated Impulse Withstand Voltage | 6 kV |
| Breaking Capacity (Icu) at 230V | 100 kA according to IEC 60947-2 |
| Breaking Capacity (Icu) at 400V | 50 kA according to IEC 60947-2 |
| Trip Characteristic | D-curve (630-882A or 10-14 In) |
| Degree of Protection | IP20 (finger-safe terminals) |
| Built-in Depth | 47 mm |
| Module Width | 6 modular spacings (106.8 mm total width) |
| Height | 127.5 mm |
| Overall Depth | 79.2 mm |
| Frequency Range | 50-60 Hz |
| Connectable Conductor Cross Section (Multi-wired) | 1.5-35 mm² |
| Connectable Conductor Cross Section (Solid-core) | 1.5-50 mm² |
| Connection Type | Screwed terminal, Cable |
| Supply Direction | Top or bottom |
| Ambient Operating Temperature | -25°C to 70°C |
| Storage Temperature | -40°C to 70°C |
| Nominal Voltage Range | 360-440 V |
| Pollution Degree | 3 |
| Impact Strength Rating | IK02 |
| Color | Grey (RAL 7035) |
| Halogen Free | Yes |
| Mounting Method | DIN rail |
| Neutral Conductor | Concurrently switching neutral conductor |
| Additional Equipment | Compatible with Legrand DX3 auxiliaries and RCD add-on modules |
| Reference Number | 410232 |
| EAN Code | 3245064102322 |
| Carbon Footprint (Manufacturing) | 6.991 kg CO2 eq. |
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