Professional four-pole thermal-magnetic circuit breaker with 50kA breaking capacity, C curve protection, and IP20 safety terminals for reliable electrical circuit control and protection.
The Legrand DX³ four-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 applications. This advanced circuit breaker features a 50kA breaking capacity at 400V, providing reliable protection against short circuits and overloads. The device incorporates a C curve tripping characteristic that activates between 5 to 10 times the rated current, making it ideal for circuits with moderate inrush currents. The visible breaking mechanism allows for clear confirmation of circuit status, while the IP20 finger-safe terminals ensure safe installation and operation in various electrical environments.
This four-pole breaker is equipped with comprehensive safety features including a red/green mechanical indicator that displays the open or closed status of contacts, and a label holder for clear circuit identification. The device supports connection to both copper and aluminum cables (with appropriate terminal accessories) and can be equipped with Legrand DX3 auxiliaries, RCD add-on modules, and various accessories. With a rated voltage of 400V and insulation voltage of 500V, this circuit breaker is fully compliant with IEC 60947-2 standards and offers exceptional reliability in demanding electrical installations.
The DX3 circuit breaker is designed with environmental consciousness, featuring halogen-free construction and compliance with substance-restriction requirements. Its compact design with a built-in depth of 47mm and width of 106.8mm makes it suitable for installation in standard DIN rail-mounted distribution panels. The device operates reliably across ambient temperatures from -25°C to 70°C and features robust impact resistance rated at IK02. Installation should be performed by qualified electricians in compliance with local electrical codes and regulations.
Key Features
- 50kA breaking capacity at 400V with C curve tripping characteristic (5-10 In)
- Four-pole modular design with visible breaking mechanism and clear contact status indicator
- IP20 finger-safe terminals for secure installation and protection against solid bodies larger than 12.5mm
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules, and various electrical accessories
- Halogen-free construction with environmental compliance and substance-restriction adherence
- Red/green mechanical indicator for circuit status display and label holder for circuit identification
- Supports both copper and aluminum cable connections with appropriate terminal accessories
- Compact DIN rail mounting design with 6 modular spacing width for standard distribution panels
- Operates reliably across -25°C to 70°C ambient temperature range with IK02 impact resistance
- Rated voltage 400V with 500V insulation voltage and 6kV impulse withstand capability
Technical Specifications
| Specification |
Value |
| Product Type | Four-pole modular thermal-magnetic circuit breaker |
| Rated Current | 25 A |
| Rated Voltage | 400 V AC |
| Insulation Voltage | 500 V |
| Impulse Withstand Voltage | 6 kV |
| Breaking Capacity (50 kA at 400V) | IEC 60947-2 compliant |
| Breaking Capacity (100 kA at 230V) | IEC 60947-2 compliant |
| Tripping Characteristic | C curve (5-10 In) |
| Number of Poles | 4 poles (all protected) |
| Built-in Depth | 47 mm |
| Width | 106.8 mm |
| Height | 127.5 mm |
| Depth | 79.2 mm |
| Modular Width | 6 modular spacings |
| Degree of Protection | IP20 (fingerproof) |
| Impact Resistance | IK02 |
| Operating Temperature Range | -25°C to 70°C |
| Storage Temperature Range | -40°C to 70°C |
| Frequency | 50-60 Hz |
| Nominal Voltage Range | 360-440 V |
| 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 connection |
| Supply Direction | Top or bottom |
| Mounting Method | DIN rail |
| Flush-mounted Installation | Yes |
| Neutral Conductor Switching | Concurrent switching |
| Pollution Degree | 3 |
| Color | Grey (RAL 7035) |
| Halogen-free | Yes |
| Label Space | Yes |
| Additional Equipment | Compatible with DX3 auxiliaries and RCD modules |
| Carbon Footprint (Manufacturing) | 6.591 kg CO2 eq. |
| Reference Number | 410176 |
| EAN Code | 3245064101769 |
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