Single-pole 40A Legrand RX3 circuit breaker with C-curve characteristic, 4500A breaking capacity, IP20 protection, and advanced current limiting technology for reliable household electrical protection.
The Legrand RX3 MCB (Miniature Circuit Breaker) is a single-pole 40A circuit breaker with a C-curve tripping characteristic, designed for household and small commercial electrical installations. This device features a breaking capacity of 4500A according to IEC 60898-1 standard, providing reliable protection against short circuits and overloads. The breaker can be supplied with either copper cable or prong busbar connection from the top or bottom side, offering flexible installation options.
This circuit breaker is engineered with advanced current limiting technology (Class 3) that minimizes let-through energy, ensuring maximum protection for electrical circuits and connected equipment. The device is IP20 rated, providing protection against solid bodies larger than 12.5mm, making it suitable for standard indoor installations. With a rated voltage of 230V AC and impulse withstand voltage of 4kV, the RX3 40A breaker meets stringent international safety standards and is halogen-free for environmental compliance.
The compact design features a 1-module width on DIN rail mounting, with dimensions of 17.8mm width, 88.8mm height, and 77.3mm depth. The grey finish (RAL 7035) and robust construction ensure durability in various installation environments. This product is fully compliant with RoHS and REACH regulations, and includes comprehensive documentation and technical support from Legrand.
Key Features
- Breaking capacity of 4500A according to IEC 60898-1 standard for household installations
- C-curve tripping characteristic with threshold between 200A and 400A (5-10 In range)
- Current limiting class 3 technology minimizing let-through energy for maximum equipment protection
- IP20 protection rating against solid bodies larger than 12.5mm for safety and durability
- Flexible connection options with copper cable or prong busbar from top or bottom side
- Compact 1-module DIN rail mounting design with space-efficient dimensions
- Rated voltage 230V AC with 4kV impulse withstand voltage for reliable performance
- Halogen-free construction meeting RoHS and REACH environmental compliance requirements
Technical Specifications
| Specification |
Value |
| Rated Current | 40 A |
| Number of Poles | 1 pole (single-pole) |
| Release Characteristic | C curve (200-400A tripping threshold) |
| Rated Voltage | 230 V AC |
| Rated Insulation Voltage | 400 V |
| Rated Impulse Withstand Voltage | 4 kV |
| Breaking Capacity (Icn) | 4.5 kA at 230V |
| Breaking Capacity (Icu) | 4.5 kA at 230V |
| Current Limiting Class | Class 3 |
| Frequency Range | 50-60 Hz |
| Degree of Protection (IP) | IP20 |
| Impact Strength (IK) | IK04 |
| Width | 17.8 mm (1 module) |
| Height | 88.8 mm |
| Depth | 77.3 mm |
| Built-in Depth | 44 mm |
| Mounting Method | DIN rail |
| Connection Type | Screwed terminal, Busbar and cable |
| Electric Supply Direction | Top or bottom |
| Color | Grey (RAL 7035) |
| Halogen Free | Yes |
| Storage Temperature Range | -25°C to +60°C |
| Nominal Voltage Range | 210-440 V |
| Pollution Degree | 2 |
| Flush-mounted Installation | Yes |
| Product Reference | 419668 |
| EAN Code | 3414970368416 |
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