Legrand RX3 4-pole 63A circuit breaker with 4500A breaking capacity, curve C characteristics, IP20 protection, and halogen-free design for residential and commercial electrical installations.
The Legrand RX3 MCB (Miniature Circuit Breaker) is a 4-pole 63A circuit breaker with curve C characteristics, specifically designed for residential and small commercial electrical installations. This device features a breaking capacity of 4500A according to IEC 60898-1 standard, providing reliable protection against overcurrent and short-circuit faults. The RX3 series represents advanced modular protection technology with superior energy limitation capabilities (class 3), ensuring maximum safety for electrical circuits and connected equipment.
This circuit breaker is engineered with fingerproof protection (IP20) against solid bodies larger than 12.5mm, meeting IEC/EN 60529 standards for electrical safety. The device can be supplied through either copper cable or prong busbar connections from the top or bottom, offering flexible installation options. With a rated voltage of 400V and impulse withstand voltage of 4kV, this breaker is suitable for three-phase and neutral conductor protection in modern electrical distribution systems.
The RX3 63A curve C breaker combines reliability, safety, and compliance with environmental standards. It features halogen-free construction and has been designed through environmentally conscious manufacturing processes. Installation should be performed by qualified electricians in compliance with local electrical installation rules and regulations. The product includes comprehensive documentation and technical support to ensure proper installation and operation.
Key Features
- 4500A breaking capacity according to IEC 60898-1 standard for household installations
- Curve C tripping threshold between 315A and 630A (5-10 In) for short-circuit protection
- Maximum energy limitation class 3 with superior let-through energy reduction
- Fingerproof IP20 protection against solid bodies larger than 12.5mm per IEC/EN 60529
- Flexible connection options via copper cable or prong busbar from top or bottom
- Halogen-free environmentally conscious design and manufacturing process
- Rated voltage 400V with 4kV impulse withstand voltage for three-phase systems
- Concurrent switching of neutral conductor for enhanced safety
- DIN rail mounting with 4 modular spacings for compact installation
Technical Specifications
| Specification |
Value |
| Product Type | Miniature Circuit Breaker (MCB) |
| Brand | Legrand |
| Series | RX3 |
| Reference Number | 419747 |
| EAN Code | 3414970369468 |
| Number of Poles | 4 poles (4P) |
| Rated Current | 63 Amperes |
| Release Characteristic | Curve C |
| Rated Voltage | 400 V AC |
| Rated Insulation Voltage | 400 V |
| Rated Impulse Withstand Voltage | 4 kV |
| Breaking Capacity at 230V | 6 kA (Icn and Icu) |
| Breaking Capacity at 400V | 4.5 kA (Icn and Icu) |
| Frequency Range | 50-60 Hz |
| Current Limiting Class | Class 3 (Maximum energy limitation) |
| Degree of Protection | IP20 (Fingerproof) |
| Impact Strength Rating | IK04 |
| Pollution Degree | 2 |
| Built-in Depth | 44 mm |
| Width | 71.2 mm |
| Height | 88.8 mm |
| Depth | 77.3 mm |
| Width in Modular Spacings | 4 modules |
| Mounting Method | DIN rail |
| Flush-Mounted Installation | Yes |
| Connection Type | Screwed terminal, Busbar and cable |
| Electric Supply Direction | By the top or bottom |
| Concurrent Neutral Switching | Yes |
| Color | Grey |
| RAL Number | 7035 |
| Halogen Free | Yes |
| Storage Temperature Range | -25 to 60°C |
| Nominal Voltage Range | 360-440 V |
| Additional Equipment Possible | No |
| Explosion-Proof | No |
| Terminal Marking | No |
| Label Space Available | No |
| Standards Compliance | IEC 60898-1, IEC/EN 60529, IEC 60947-2 |
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