Premium four-pole modular circuit breaker with 36kA breaking capacity, 25A C curve rating, IP20 finger-safe terminals, and DX3 compatibility for reliable electrical circuit protection
The Legrand DX3 MCB is a four-pole modular thermal-magnetic circuit breaker designed for control, protection and isolation of electrical circuits in residential and small commercial applications. This premium quality device features a 36kA breaking capacity at 400V with a C curve characteristic, providing reliable short-circuit protection between 125A and 250A. The circuit breaker is equipped with IP20 finger-safe terminals and is compatible with DX3 auxiliaries, RCD add-on modules, and various accessories for enhanced functionality.
This circuit breaker incorporates advanced safety features including a red/green mechanical indicator that clearly displays the open or closed status of the contacts, and a label holder for convenient circuit identification. With a rated current of 25A and rated voltage of 400V, it supports both copper and aluminum cable connections (with appropriate terminal accessories). The device operates reliably across a wide ambient temperature range of -25°C to 70°C and meets international standards including IEC 60947-2 for circuit protection.
The DX3 is engineered with environmental consciousness, featuring halogen-free construction and compliance with substance-restriction requirements. Its compact design with 6 modular spacing width allows for efficient installation on DIN rails in distribution panels. The device is protected against solid bodies larger than 12.5mm (IP20 rating) and includes a carbon footprint of 6.591 kg CO2 eq during the manufacturing phase, demonstrating Legrand's commitment to sustainable electrical solutions.
Key Features
- 36kA breaking capacity at 400V with C curve characteristic for short-circuit protection
- IP20 finger-safe terminals protecting against solid bodies larger than 12.5mm
- Red/green mechanical indicator displaying open/closed contact status
- Compatible with DX3 auxiliaries, RCD add-on modules, and accessories
- Supports both copper and aluminum cable connections with appropriate terminals
- Halogen-free construction with environmental compliance and sustainability
- Label holder for convenient circuit identification and organization
- Operates reliably across -25°C to 70°C ambient temperature range
Technical Specifications
| Specification |
Value |
| Product Type | Four-Pole Modular Thermal-Magnetic Circuit Breaker |
| Rated Current | 25A |
| Rated Voltage | 400V AC |
| Breaking Capacity | 36kA at 400V (72kA at 230V) |
| Trip Characteristic | C Curve (5 In to 10 In) |
| Number of Poles | 4 Poles |
| Protection Degree | IP20 Finger-Safe |
| Insulation Voltage | 500V |
| Impulse Withstand Voltage | 6kV |
| Operating Frequency | 50-60 Hz |
| Conductor Cross Section (Solid) | 1.5-50 mm² |
| Conductor Cross Section (Multi-Wired) | 1.5-35 mm² |
| Width (Modular Spacing) | 6 Modules |
| Physical Width | 106.8 mm |
| Physical Height | 127.5 mm |
| Physical Depth | 79.2 mm (Built-in: 47 mm) |
| Impact Strength | IK02 |
| Ambient Temperature Range | -25°C to 70°C (Operating), -40°C to 70°C (Storage) |
| Nominal Voltage Range | 360-440V |
| Connection Type | Screwed Terminal, Cable |
| Supply Direction | Top or Bottom |
| Mounting Method | DIN Rail |
| Color | Grey (RAL 7035) |
| Halogen Free | Yes |
| Carbon Footprint (Manufacturing) | 6.591 kg CO₂ eq. |
| Pollution Degree | 3 |
| Reference Number | 410036 |
| EAN Code | 3245064100366 |
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