Shop Legrand DX3 MCB 3 Pole 4A Circuit Breaker B-Curve | 407557 In Iraq Best Prices
Advanced 3-pole thermal magnetic circuit breaker with 6kA/10kA breaking capacity, B-curve tripping, and IP20 fingerproof protection for reliable electrical installation safety.
The Legrand DX3 MCB 3 Pole 4A Circuit Breaker with B-Curve is a thermal magnetic circuit-breaker designed to protect wiring installations against overloads and short-circuits. This advanced protective device features a 6kA/10kA breaking capacity and B-curve tripping characteristics, providing reliable 3P protection at 400V~. With IP20 'fingerproof' safety rating, it ensures protection against solid bodies larger than 12.5mm, making it ideal for residential and small commercial applications.
This circuit breaker offers exceptional performance with maximum energy limitation (Class 3 according to IEC 60898-1 standard). 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 features fitted DIN rail clamps for independent removal, and includes a convenient label holder for clear circuit identification. The B-curve tripping provides a short-circuit tripping threshold between 12A and 20A (3In to 5In range).
Compliant with all substance-restriction requirements and designed with environmental consciousness, this MCB integrates seamlessly with Legrand DX3 auxiliaries, RCD add-on modules, and accessories. It features on/off indication printed on the handle with red and green backgrounds for easy status identification. The device is halogen-free and suitable for connection to aluminum cable with terminal accessory, making it a versatile solution for modern electrical installations.
Key Features
- Breaking capacity of 6kA (IEC 60898-1) and 10kA (IEC 60947-2 at 400V) for enhanced protection
- B-curve tripping with short-circuit threshold between 12A and 20A (3In to 5In) for precise load management
- IP20 fingerproof safety rating protecting against solid bodies larger than 12.5mm
- Class 3 energy limitation providing maximum let-through energy control
- DIN rail mounted with independent removal capability and label holder for circuit identification
Technical Specifications
| Specification |
Value |
| Product Type | Thermal Magnetic Circuit Breaker (MCB) |
| Number of Poles | 3 Pole (3P) |
| Rated Current | 4 Amperes (A) |
| Rated Voltage | 400V AC |
| Rated Insulation Voltage | 500V |
| Rated Impulse Withstand Voltage | 4 kV |
| Breaking Capacity (Icn) | 6 kA at 400V (IEC 60898-1) |
| Breaking Capacity (Icu) | 10 kA at 400V (IEC 60947-2) |
| Breaking Capacity (Icu) | 25 kA at 230V (IEC 60947-2) |
| Tripping Characteristic | B-Curve (12A to 20A / 3In to 5In) |
| Current Limiting Class | Class 3 |
| Degree of Protection | IP20 (Fingerproof) |
| Width | 53.1 mm (3 modular spacings) |
| Height | 94.8 mm |
| Depth | 77.8 mm / Built-in depth 44 mm |
| Frequency | 50-60 Hz |
| Ambient Temperature Range | -25 to +70°C (Operating) |
| Storage Temperature Range | -40 to +70°C |
| Connectable Conductor Cross Section | 1.5-35 mm² (solid-core) / 1.5-25 mm² (multi-wired) |
| Connection Type | Screwed Terminal |
| Mounting Method | DIN Rail |
| Supply Direction | Top or Bottom |
| Impact Strength Degree | IK02 |
| Pollution Degree | 2 |
| Color | Grey (RAL 7035) |
| Halogen Free | Yes |
| Flush-mounted Installation | Yes |
| Concurrent Neutral Conductor Switching | No |
| Additional Equipment | Compatible with DX3 auxiliaries, RCD add-on modules and accessories |
| Reference Number | 407557 |
| EAN Code | 3245064075572 |
| Carbon Footprint (Manufacturing) | 2.851 kg CO2 eq. |
Order Legrand DX3 MCB 3 Pole 4A Circuit Breaker B-Curve | 407557 at wholesale prices for companies and factories in Iraq and Middle East, get the best deals on bulk purchases, contact us today.
