Professional three-pole 20A circuit breaker with 50kA breaking capacity, C curve characteristic, and IP20 finger-safe terminals for reliable electrical circuit protection and isolation in residential and commercial applications.
The Legrand DX³ three-pole modular thermal-magnetic circuit breaker is a professional-grade electrical protection device designed for control, protection, and isolation of electrical circuits. This advanced circuit breaker features a rated current of 20A with C curve characteristic, offering 50kA breaking capacity at 400V AC and 100kA breaking capacity at 230V AC according to IEC 60947-2 standards. The device is engineered with IP20 finger-safe terminals that ensure safe integration into modern electrical installations, protecting against solid bodies larger than 12.5mm.
This circuit breaker is specifically designed for residential and small commercial panel applications, providing reliable thermal-magnetic protection with a tripping threshold between 100A and 200A for short-circuit conditions. The DX³ series offers exceptional performance with a rated impulse withstand voltage of 6kV and operates efficiently across 50-60Hz frequencies. The device features a red/green mechanical indicator that clearly displays the open or closed status of contacts, along with a convenient label holder for circuit identification. With a compact modular design of 4.5 module spacings, it integrates seamlessly into DIN rail installations.
The product is manufactured with environmental consciousness, complying with substance-restriction requirements and RoHS directives. It features halogen-free construction and operates reliably in ambient temperatures ranging from -25°C to 70°C. The circuit breaker can be supplied from either the top or bottom with copper cables and supports connection to aluminum cables with optional terminal accessories. Compatible with Legrand DX3 auxiliaries, RCD add-on modules, and comprehensive accessories, this device represents the pinnacle of electrical circuit protection technology for modern installations.
Key Features
- 50kA breaking capacity at 400V AC and 100kA at 230V AC according to IEC 60947-2 standards
- IP20 finger-safe terminals protecting against solid bodies larger than 12.5mm
- Red/green mechanical indicator for clear open/closed status display
- C curve characteristic with tripping threshold between 100A and 200A for short circuits
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules and comprehensive accessories
- Halogen-free construction compliant with RoHS directives and substance restrictions
- Operates reliably across 50-60Hz frequencies and ambient temperatures from -25°C to 70°C
- Compact modular design with 4.5 module spacings for efficient DIN rail installation
- Convenient label holder for clear circuit identification and management
- Supports supply from top or bottom with copper cables and optional aluminum cable accessories
Technical Specifications
| Specification |
Value |
| Product Type | Three-Pole Modular Thermal-Magnetic Circuit Breaker |
| Rated Current | 20A |
| Release Characteristic | C Curve |
| Rated Voltage | 400V AC |
| Rated Insulation Voltage | 500V |
| Rated Impulse Withstand Voltage | 6kV |
| Breaking Capacity at 400V | 50kA |
| Breaking Capacity at 230V | 100kA |
| Frequency Range | 50-60Hz |
| Degree of Protection | IP20 |
| Degree of Impact Strength | IK02 |
| Number of Poles | 3 poles (3 protected poles) |
| Width in Module Spacings | 4.5 spacings |
| Built-in Depth | 47mm |
| Width | 80.1mm |
| Height | 127.5mm |
| Total Depth | 79.2mm |
| Connection Type | Screwed Terminal with Cable |
| Connectable Conductor Cross Section (Multi-wired) | 1.5-35mm² |
| Connectable Conductor Cross Section (Solid-core) | 1.5-50mm² |
| Supply Direction | Top or Bottom |
| Ambient Operating Temperature | -25°C to 70°C |
| Storage Temperature | -40°C to 70°C |
| Nominal Voltage Range | 360-440V |
| Pollution Degree | 3 |
| Mounting Method | DIN Rail |
| Color | Grey (RAL 7035) |
| Halogen Free | Yes |
| Flush-mounted Installation | Yes |
| Additional Equipment Possible | Yes |
| Explosion-proof | No |
| Concurrently Switching Neutral Conductor | No |
| Label Space/Information Surface | Yes |
| Carbon Footprint (Manufacturing Phase) | 5.449 kg CO₂ eq. |
| Reference Number | 410162 |
| EAN Code | 3245064101622 |
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