4-pole thermal magnetic circuit-breaker with 4A rated current, B-curve characteristic, 6kA/10kA breaking capacity, IP20 finger-safe terminals, and compatibility with DX3 auxiliaries for reliable protection of residential and small commercial installations.
The Legrand MCB DX3 6000A is a thermal magnetic circuit-breaker designed to protect wiring installations against overloads and short-circuits. This four-pole device operates at 400V AC with a rated current of 4A and features a B-curve characteristic, providing a tripping threshold between 12A and 20A (3 In to 5 In). With a breaking capacity of 6kA according to IEC 60898-1 standard for household installations and 10kA at 400V according to IEC 60947-2, this MCB delivers reliable protection for residential and small commercial applications.
The circuit-breaker is equipped with IP20 finger-safe terminals, protecting against solid bodies larger than 12.5mm, and offers maximum energy limitation (class 3 according to IEC 60898-1). It features two DIN rail clamps allowing independent removal even when the prong busbar is in place. The device includes a label holder for clear circuit identification and ON/OFF indication printed on the handle with red and green backgrounds for easy status identification.
This Legrand MCB is compatible with DX3 auxiliaries, RCD add-on modules, and various accessories. It can be supplied by copper cable, prong busbar (top or bottom side), fork busbar (bottom side), or Legrand HX3 plug busbar (top side). The device complies with substance-restriction requirements and has been designed in an environmentally conscious process, featuring halogen-free materials for enhanced safety and sustainability.
Key Features
- 4-pole configuration with 4A rated current at 400V AC
- B-curve characteristic with tripping threshold between 12A and 20A
- 6kA breaking capacity (IEC 60898-1) and 10kA at 400V (IEC 60947-2)
- IP20 finger-safe terminals protecting against solid bodies larger than 12.5mm
- Energy limitation class 3 for maximum protection
- Compatible with DX3 auxiliaries, RCD add-on modules and accessories
- DIN rail mounted with two independent clamps for easy removal
- Clear circuit identification with label holder
- ON/OFF indication printed on handle with red/green backgrounds
- Halogen-free materials for environmental safety
Technical Specifications
| Specification |
Value |
| Number of Poles | 4 poles (4P) |
| Rated Current | 4 A |
| Rated Voltage | 400 V AC |
| Release Characteristic | B-curve (12A-20A tripping threshold) |
| Breaking Capacity | 6 kA (IEC 60898-1) / 10 kA at 400V (IEC 60947-2) |
| Degree of Protection | IP20 (Finger-safe) |
| Current Limiting Class | Class 3 |
| Rated Insulation Voltage | 500 V |
| Impulse Withstand Voltage | 4 kV |
| Frequency Range | 50-60 Hz |
| Width in Modular Spacings | 4 modules |
| Physical Width | 70.8 mm |
| Physical Height | 94.8 mm |
| Physical Depth | 77.8 mm (Built-in depth: 44 mm) |
| Connectable Conductor Cross Section | 1.5-25 mm² (multi-wired) / 1.5-35 mm² (solid-core) |
| Operating Temperature Range | -25°C to +70°C |
| Storage Temperature Range | -40°C to +70°C |
| Connection Type | Screwed terminal |
| Mounting Method | DIN rail |
| Colour | Grey (RAL 7035) |
| Impact Strength Rating | IK02 |
| Halogen Free | Yes |
| Pollution Degree | 2 |
| Product Reference | 407620 |
| EAN Code | 3245064076203 |
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