Shop Legrand DX3 MCB 4 Pole 100A Circuit Breaker B-Curve | 409090 In Iraq Best Prices
Professional-grade four-pole MCB circuit breaker with 100A B-curve protection, 10kA/16kA breaking capacity, IP20 safety terminals, and DIN rail mounting for reliable electrical circuit protection.
The Legrand DX3 MCB (Miniature Circuit Breaker) is a four-pole modular thermal-magnetic circuit breaker designed for comprehensive control, protection, and isolation of electrical circuits in residential and small commercial installations. This premium-grade device delivers reliable 100A B-curve protection at 400V with dual breaking capacities of 10kA according to IEC 60898-1 standard for household installations and 16kA according to IEC 60947-2 for enhanced protection. The breaker features IP20 finger-safe terminals that prevent accidental contact with live parts, ensuring maximum safety compliance. With its compact 6-module width and 47mm built-in depth, it integrates seamlessly into standard DIN rail installations while maintaining compatibility with Legrand's extensive range of DX3 auxiliaries, RCD add-on modules, and accessories.
The DX3 MCB incorporates advanced thermal-magnetic tripping mechanisms with a B-curve characteristic that provides a tripping threshold between 300A and 500A (3-5 times the rated current), making it ideal for circuits with moderate inrush currents. The device can be supplied via multiple connection methods including copper cables, prong busbars (top or bottom), fork busbars (bottom), or Legrand's proprietary HX3 plug busbar (top), offering exceptional installation flexibility. Its dual DIN rail clamps positioned at the top and bottom allow independent removal without affecting the main busbar supply, streamlining maintenance and troubleshooting procedures.
Manufactured with environmental consciousness, this circuit breaker complies with all substance-restriction requirements and RoHS directives. The unit features a convenient label holder for circuit identification and clear ON/OFF indication printed on the handle with red and green backgrounds for easy status recognition. Operating across a wide ambient temperature range of -25°C to +70°C, it accommodates both multi-wired conductors (6-50mm²) and solid-core conductors (6-70mm²), ensuring versatile installation capabilities. The halogen-free design and IK02 impact resistance rating further demonstrate Legrand's commitment to safety and durability in electrical distribution systems.
Key Features
- Four-pole thermal-magnetic circuit breaker with B-curve release characteristic (300-500A tripping threshold)
- Dual breaking capacity: 10kA per IEC 60898-1 and 16kA per IEC 60947-2 standards
- IP20 finger-safe protection terminals preventing accidental contact with live components
- Flexible connection options including copper cables, prong busbars, fork busbars, and HX3 plug busbars
- Independent DIN rail clamps allowing removal without affecting main busbar supply
- Compatible with Legrand DX3 auxiliaries, RCD add-on modules, and comprehensive accessory range
- Clear ON/OFF status indication with red and green color-coded handle markings
- Convenient label holder for circuit identification and documentation
- Halogen-free construction compliant with RoHS and environmental regulations
- Wide operating temperature range -25°C to +70°C for diverse installation environments
Technical Specifications
| Specification |
Value |
| Product Type | Miniature Circuit Breaker (MCB) - Four-Pole Modular |
| Rated Current | 100A |
| Release Characteristic | B-Curve (300-500A tripping threshold, 3-5 In) |
| Rated Voltage | 400V AC |
| Rated Insulation Voltage | 500V |
| Rated Impulse Withstand Voltage | 4kV |
| Breaking Capacity IEC 60898-1 | 10kA at 400V (Household installations) |
| Breaking Capacity IEC 60947-2 | 16kA at 400V / 32kA at 230V |
| Number of Poles | 4 (total and protected) |
| Frequency Range | 50-60 Hz |
| Degree of Protection | IP20 (Finger-safe) |
| Degree of Impact Strength | IK02 |
| Built-in Depth | 47mm |
| Module Width | 6 modular spacings (70.8mm total width) |
| Overall Dimensions | Width 70.8mm × Height 94.8mm × Depth 77.8mm |
| Connection Type | Screwed terminals |
| Conductor Cross Section Multi-wired | 6-50mm² |
| Conductor Cross Section Solid-core | 6-70mm² |
| Operating Temperature Range | -25°C to +70°C |
| Storage Temperature Range | -40°C to +70°C |
| Pollution Degree | 2 |
| Supply Direction | Top or bottom |
| Mounting Method | DIN rail (with dual clamps - top and bottom) |
| Flush-mounted Installation | Yes |
| Neutral Conductor Switching | Yes (Concurrently switching) |
| Additional Equipment Possible | Yes (Auxiliaries, RCD modules, accessories) |
| Color | Grey (RAL 7035) |
| Halogen Free | Yes |
| Explosion-proof | No |
| Reference Number | 409090 |
| EAN Code | 3245064090902 |
| Carbon Footprint (Manufacturing) | 6.133 kg CO₂ eq. |
| Compliance Standards | IEC 60898-1, IEC 60947-2, IEC/EN 60529, RoHS, REACH |
| Brand | Legrand |
| Product Line | DX³ |
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