Legrand MCB TX3 2-pole 20A thermal magnetic circuit-breaker with B curve, 6000A breaking capacity, IP20 protection, and DIN rail mounting for reliable household electrical protection.
The Legrand MCB TX3 is a thermal magnetic circuit-breaker designed to protect wiring installations against overloads and short-circuits. With a 2-pole configuration, 20A rated current, B curve release characteristic, and 6000A breaking capacity, this device provides reliable and efficient protection for residential and small commercial electrical systems. The circuit-breaker features an IP20 finger-safe design that protects against solid bodies larger than 12.5mm, ensuring safe operation in various environments.
This MCB TX3 model is equipped with a special DIN rail clamp on the bottom side, allowing independent removal when the fork busbar supplying the row remains in place. The device includes a label holder for clear circuit identification and an on/off indication printed on the handle with red and green backgrounds for easy status identification. It can be supplied by copper cable, prong busbar (top or bottom side), or fork busbar (bottom side), offering flexible installation options.
The breaking capacity of 6000A according to IEC 60898-1 standard ensures maximum protection for household installations. The tripping threshold in case of short-circuit is between 60A and 100A (B curve between 3 In and 5 In). With current limiting class 3 according to IEC 60898-1 standard, this circuit-breaker provides the maximum level of limitation of let-through energy. It can be equipped with Legrand DX3 auxiliaries and accessories, and can be connected to aluminium cable with Legrand DX3 terminal accessory. This product complies with substance-restriction requirements and has been designed in an environmentally conscious process.
Key Features
- 2-pole configuration with 20A rated current for residential and small commercial applications
- B curve release characteristic with 6000A breaking capacity according to IEC 60898-1 standard
- IP20 finger-safe design protecting against solid bodies larger than 12.5mm for safe operation
- DIN rail mounting with special bottom-side clamp allowing independent removal without disturbing busbar
- Current limiting class 3 with maximum energy limitation and flexible supply options (copper cable, prong or fork busbar)
- Built-in label holder for circuit identification and clear on/off indication on handle
- Compatible with Legrand DX3 auxiliaries and accessories for enhanced functionality
- Environmentally conscious design complying with substance-restriction requirements and RoHS standards
Technical Specifications
| Specification |
Value |
| Product Type | Thermal Magnetic Circuit Breaker (MCB) |
| Number of Poles | 2 (2P) |
| Rated Current | 20 Amperes (A) |
| Release Characteristic | B Curve (3-5 In tripping threshold) |
| Breaking Capacity | 6000A at 400V, 10000A at 230V (IEC 60898-1) |
| Rated Voltage | 400V AC |
| Rated Insulation Voltage | 500V |
| Impulse Withstand Voltage | 4 kV |
| Frequency | 50-60 Hz |
| Current Limiting Class | 3 |
| Degree of Protection | IP20 (Finger-safe) |
| Mounting Method | DIN Rail |
| Width | 35.4 mm (2 modular spacings) |
| Height | 88 mm |
| Depth | 77.8 mm (built-in depth 44 mm) |
| Impact Strength Rating | IK02 |
| Colour | Grey (RAL 7035) |
| Connection Type | Screwed terminal, Busbar and cable |
| Supply Direction | Top or bottom |
| Storage Temperature Range | -40°C to +70°C |
| Nominal Voltage Range | 240-415V |
| Pollution Degree | 2 |
| Halogen Free | Yes |
| Reference Number | 403388 |
| EAN Code | 3414970387202 |
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