4.9 Based on 1156 reviews 
Description
3 Pole 20A C Curve 10kA Miniature Circuit Breaker
Live Electrical Three Phase MCB – CB320C
The Live Electrical CB320C 3 Pole 20A C Curve 10kA MCB provides dependable protection for commercial 3-phase electrical systems. Its C Curve tripping characteristic makes it ideal for circuits that experience higher inrush currents, such as those involving motors and transformers. Additionally, with a 10kA breaking capacity, this MCB ensures the safe interruption of fault currents, making it a budget-friendly solution that maintains high-quality performance.
Key Features:
- 3 Pole 20A MCB: Designed for 3-phase systems with a rated current of 20 Amps.
- C Curve Tripping Characteristic: Ideal for circuits with higher inrush currents, such as motors and transformers, tripping at 5 to 10 times the rated current.
- 10kA Breaking Capacity: Safely handles fault currents up to 10kA, offering reliable protection against overloads and short circuits.
- Voltage Rating: Suitable for 230/400V systems, operating at a frequency of 50/60Hz.
- Durability: Rated for 8,000 electrical operations and 20,000 mechanical operations, ensuring long-lasting reliability.
- IP20 Protection: Protects against accidental contact with live components, enhancing safety in commercial environments.
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 Characteristics
- 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 is a C Curve MCB used for?
A C Curve MCB trips when the current exceeds 5 to 10 times the rated load, making it suitable for circuits with higher inrush currents, such as motors or transformers commonly found in commercial setups.
2. Is this MCB suitable for 3-phase systems?
Yes, this 3-pole MCB is specifically designed for 3-phase systems, providing reliable protection for circuits handling up to 20 amps.
3. Why is the 10kA breaking capacity important?
The 10kA breaking capacity ensures the MCB can safely handle fault currents up to 10,000 amps, offering essential protection against overloads and short circuits in high-demand environments.
4. How durable is this MCB?
This MCB is built to last, rated for 8,000 electrical operations and 20,000 mechanical operations, making it a reliable choice for long-term use in commercial environments.
5. Can this MCB operate in extreme temperatures?
Yes, the MCB operates efficiently between -5°C and +40°C and can be stored in environments ranging from -25°C to +70°C.
Conclusion
The Live Electrical CB320C 3 Pole 20A C Curve 10kA MCB is a cost-effective and high-performance solution for protecting circuits with higher inrush currents, such as motors and transformers. Its C Curve tripping characteristic and 10kA breaking capacity make it ideal for commercial 3-phase systems. This MCB delivers reliable protection while keeping the project within budget.
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