Professional 4-pole modular circuit breaker with 32A rating, 50kA breaking capacity, D-curve protection, and IP20 finger-safe terminals for residential and commercial applications.
The Legrand DX3 4 Pole 32A Curve D Circuit Breaker is a professional-grade modular thermal-magnetic circuit breaker designed for comprehensive protection and isolation of electrical circuits. This advanced device features a 50kA breaking capacity at 400V, making it ideal for residential and small commercial panel installations. The breaker is equipped with fully visible breaking mechanism, D-curve tripping characteristic (320A-448A short-circuit threshold), and IP20 finger-safe terminals that comply with IEC/EN 60529 standards. The device provides reliable protection against overcurrent and short-circuit conditions while maintaining complete visibility of the breaking operation.
This DX3 circuit breaker is engineered with Legrand's proven thermal-magnetic technology, offering dependable performance in demanding electrical environments. It 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. The breaker is compatible with DX3 auxiliaries, RCD add-on modules, and various accessories, allowing for flexible system configuration. With a built-in depth of 47mm and width of 6 modular spacings (106.8mm), it integrates seamlessly into standard DIN rail installations.
The product meets strict environmental standards and has been designed with sustainability in mind. It operates efficiently across a wide temperature range (-25°C to +70°C) and accepts both copper and aluminum cables (with appropriate accessories). The breaker's halogen-free construction and compliance with RoHS directives make it an environmentally responsible choice for modern electrical installations. Whether used in residential settings, small commercial applications, or industrial control systems, this circuit breaker provides superior protection and reliable operation.
Key Features
- 50kA breaking capacity at 400V for reliable short-circuit protection
- D-curve tripping characteristic with 320A-448A short-circuit threshold
- Fully visible breaking mechanism with red/green mechanical status indicator
- IP20 finger-safe terminals compliant with IEC/EN 60529 standards
- Compatible with DX3 auxiliaries, RCD add-on modules and accessories
- Halogen-free construction with environmental compliance
- Wide operating temperature range from -25°C to +70°C
- Accepts copper cables (top or bottom supply) and aluminum cables with accessories
- Label holder for convenient circuit identification
- 6 modular spacing width for standard DIN rail integration
Technical Specifications
| Specification |
Value |
| Product Name | MCB DX3 4 Pole 32A Curve D |
| Reference Number | 410229 |
| EAN Code | 3245064102292 |
| Rated Current | 32 A |
| Number of Poles | 4 poles |
| Breaking Capacity at 230V | 100 kA |
| Breaking Capacity at 400V | 50 kA |
| Release Characteristic | D-curve (320A-448A short-circuit threshold) |
| Rated Voltage | 400 V AC |
| Rated Insulation Voltage | 500 V |
| Rated Impulse Withstand Voltage | 6 kV |
| Frequency Range | 50-60 Hz |
| Degree of Protection | IP20 (Finger-safe terminals) |
| Built-in Depth | 47 mm |
| Width in Modular Spacings | 6 spacings (106.8 mm) |
| Height | 127.5 mm |
| Overall Depth | 79.2 mm |
| Impact Strength Degree | IK02 |
| Operating Temperature Range | -25°C to +70°C |
| Storage Temperature Range | -40°C to +70°C |
| Connectable Conductor Cross Section (Solid-core) | 1.5-50 mm² |
| Connectable Conductor Cross Section (Multi-wired) | 1.5-35 mm² |
| Connection Type | Screwed terminal with cable |
| Mounting Method | DIN rail |
| Colour | Grey (RAL 7035) |
| Halogen Free | Yes |
| Concurrent Switching of Neutral | Yes |
| Pollution Degree | 3 |
| Additional Equipment Possible | Yes (DX3 auxiliaries and RCD modules) |
| Label Holder | Yes |
| Mechanical Indicator | Red/Green status display |
| Carbon Footprint (Manufacturing) | 6.742 kg CO₂ eq. |
| Nominal Voltage Range | 360-440 V |
| Supply Direction | Top or bottom |
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