4.9 Based on 1156 reviews 
Description
3 Pole 6A D Curve 10kA Miniature Circuit Breaker
Live Electrical Three Phase MCB – CB306D
The Live Electrical CB306D 3 Pole 6A D Curve 10kA MCB is designed to provide reliable protection for commercial 3-phase systems. With its D Curve tripping characteristic, it’s perfect for circuits that experience high inrush currents, such as those used by motors or heavy machinery. Additionally, the 10kA breaking capacity ensures it can safely interrupt fault currents, providing essential protection in high-demand environments.
Key Features:
- 3 Pole 6A MCB: Tailored for commercial 3-phase systems with a current rating of 6 Amps.
- D Curve Tripping Characteristic: Suited for circuits with high inrush currents, such as motors. It trips at 10 to 20 times the rated current.
- 10kA Breaking Capacity: Capable of safely interrupting fault currents up to 10kA, offering protection against overloads and short circuits.
- Voltage Rating: Compatible with 230/400V systems, operating at a frequency of 50/60Hz.
- Long-lasting Durability: Rated for 8,000 electrical operations and 20,000 mechanical operations.
- IP20 Protection: Ensures safety by preventing accidental contact with live components.
Technical Specifications:
- Poles: 3P
- Rated Voltage (Ue AC): 230/400V
- Frequency: 50/60Hz
- Insulation Voltage (Ui): 500V
- Breaking Capacity: 6/10kA
- Impulse Withstand Voltage: 4000V
- Dielectric Test Voltage: 2kV
- Thermo-magnetic Release: B, C, D Curves
- Electrical Life: 8,000 operations
- Mechanical Life: 20,000 operations
- IP Rating: IP20
- Ambient Temperature: -5°C to +40°C (daily average ≤35°C)
- Storage Temperature: -25°C to +70°C
FAQs:
1. What does the D Curve MCB do?
A D Curve MCB trips when the current exceeds 10 to 20 times the rated load. This makes it ideal for circuits with high inrush currents, such as those powering motors or heavy machinery.
2. Is this MCB suitable for 3-phase systems?
Yes, the 3-pole MCB is specifically designed for commercial 3-phase systems, offering reliable protection for high-demand applications.
3. Why is the 10kA breaking capacity important?
The 10kA breaking capacity ensures the MCB can handle fault currents up to 10,000 amps. This offers enhanced protection against short circuits and overloads in larger setups.
4. How durable is this MCB?
This MCB is highly durable, with a lifespan of 8,000 electrical operations and 20,000 mechanical operations, making it a long-term solution for commercial environments.
5. Can this MCB operate in extreme temperatures?
Yes, it operates efficiently between -5°C and +40°C, and it can be stored in temperatures ranging from -25°C to +70°C.
Conclusion
The Live Electrical CB306D 3 Pole 6A D Curve 10kA MCB is an excellent solution for protecting commercial 3-phase systems. Its D Curve tripping characteristic ensures it can handle circuits with high inrush currents, while the 10kA breaking capacity provides critical protection against fault currents. Moreover, with its robust design, this MCB is built to last in demanding environments.
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