4.9 Based on 1167 reviews 
Description
3 Pole 20A B Curve 10kA Miniature Circuit Breaker
Live Electrical Three Phase MCB – CB320B
The Live Electrical CB320B 3 Pole 20A B Curve 10kA MCB provides reliable protection for commercial 3-phase electrical systems. With its B Curve tripping characteristic, it is ideal for circuits with lighter loads, such as lighting and small appliances. Moreover, the 10kA breaking capacity ensures safe interruption of fault currents, making this MCB a budget-friendly solution that maintains high quality.
Key Features:
- 3 Pole 20A MCB: Designed for 3-phase systems with a current rating of 20 Amps.
- B Curve Tripping Characteristic: Suited for circuits with lighter loads, tripping at 3 to 5 times the rated current.
- 10kA Breaking Capacity: Provides solid protection by safely handling fault currents up to 10kA, safeguarding circuits from overloads and short circuits.
- Voltage Rating: Compatible with 230/400V systems, operating at 50/60Hz frequency.
- Durability: Rated for 8,000 electrical operations and 20,000 mechanical operations, ensuring long-term reliability.
- IP20 Protection: Prevents accidental contact with live parts, ensuring 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 B Curve MCB used for?
A B Curve MCB trips when the current exceeds 3 to 5 times the rated load. Therefore, it is ideal for circuits with lighter loads, such as lighting or small appliances, commonly found in commercial setups.
2. Is this MCB suitable for 3-phase systems?
Yes, this 3-pole MCB is designed specifically for commercial 3-phase systems, offering reliable protection for circuits that handle up to 20 amps.
3. Why is the 10kA breaking capacity important?
The 10kA breaking capacity ensures that the MCB can handle fault currents up to 10,000 amps, providing essential protection against overloads and short circuits in high-demand environments.
4. How durable is this MCB?
This MCB is rated for 8,000 electrical operations and 20,000 mechanical operations, making it a durable and long-lasting choice for commercial use.
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 CB320B 3 Pole 20A B Curve 10kA MCB is an affordable yet high-quality solution for protecting circuits with lighter loads in commercial 3-phase systems. Its B Curve tripping characteristic and 10kA breaking capacity provide reliable protection, ensuring your system remains safe and operational in high-demand environments.
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