High-performance 4-pole miniature circuit breaker with 32A rating, 4500A breaking capacity, C-curve protection, and advanced energy limitation for residential and commercial installations.
The Legrand RX3 MCB 4P 32A Curve C is a high-performance miniature circuit breaker designed for residential and small commercial electrical installations. This four-pole device provides reliable protection against overcurrent and short-circuit conditions with a breaking capacity of 4500A according to IEC 60898-1 standard. The circuit breaker features a C-curve tripping characteristic with a tripping threshold between 160A and 320A (5-10 times the rated current), making it ideal for circuits with moderate inrush currents typical in general-purpose applications.
This device offers maximum energy limitation with current limiting class 3, ensuring minimal let-through energy during fault conditions. The RX3 breaker is IP20 rated, providing protection against solid bodies larger than 12.5mm ('fingerproof'), and complies with all relevant international safety standards including IEC 60898-1 and IEC 60947-2. It can be supplied by either copper cable or prong busbar from the top or bottom, offering flexible installation options. The product is environmentally conscious, halogen-free, and fully compliant with RoHS and REACH regulations.
With its compact DIN rail mounting design, the RX3 MCB integrates seamlessly into modern electrical panels and switchboards. The device operates reliably across a frequency range of 50-60 Hz and is suitable for nominal voltages between 360-440V. Its robust construction, rated for storage temperatures from -25 to 60°C, ensures long-term durability and consistent performance in various installation environments.
Key Features
- 4500A breaking capacity according to IEC 60898-1 standard for household installations
- C-curve tripping characteristic with 160A-320A threshold (5-10 times rated current)
- Maximum energy limitation with current limiting class 3 for minimal let-through energy
- IP20 protection rating - fingerproof against solid bodies larger than 12.5mm
- Flexible connection options: copper cable or prong busbar (top or bottom supply)
- Four-pole protection with concurrent switching of neutral conductor
- Halogen-free and environmentally conscious design with RoHS compliance
- Compact DIN rail mounting with 4-module width configuration
- Wide operating frequency range 50-60 Hz with nominal voltage 360-440V
- Rated impulse withstand voltage 4 kV with IK04 impact strength
Technical Specifications
| Specification |
Value |
| Product Type | Miniature Circuit Breaker (MCB) |
| Brand | Legrand |
| Model Series | RX3 |
| Number of Poles | 4 poles |
| Rated Current | 32 A |
| Tripping Characteristic | C curve (5-10 In) |
| Breaking Capacity (Icn at 230V) | 6 kA |
| Breaking Capacity (Icn at 400V) | 4.5 kA |
| Ultimate Breaking Capacity (Icu at 230V) | 6 kA |
| Ultimate Breaking Capacity (Icu at 400V) | 4.5 kA |
| Rated Voltage | 400 V AC |
| Nominal Voltage Range | 360-440 V |
| Rated Insulation Voltage (Ui) | 400 V |
| Rated Impulse Withstand Voltage (Uimp) | 4 kV |
| Frequency Range | 50-60 Hz |
| Current Limiting Class | 3 |
| Degree of Protection (IP Rating) | IP20 |
| Impact Strength (IK Rating) | IK04 |
| Pollution Degree | 2 |
| Built-in Depth | 44 mm |
| Width (Module Units) | 4 modules |
| Width (Physical) | 71.2 mm |
| Height | 88.8 mm |
| Depth | 77.3 mm |
| Color | Grey |
| RAL Number | 7035 |
| Mounting Method | DIN rail |
| Connection Type | Screwed terminal, Busbar and cable |
| Supply Direction | Top or bottom |
| Neutral Conductor Switching | Concurrent switching (Yes) |
| Additional Equipment Possible | No |
| Flush-mounted Installation | Yes |
| Explosion-proof | No |
| Halogen Free | Yes |
| Storage Temperature Range | -25 to +60 °C |
| Terminal Marking | No |
| Label Space | No |
| Reference Number | 419744 |
| EAN Code | 3414970369406 |
| Standards Compliance | IEC 60898-1, IEC 60947-2, RoHS, REACH |
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