4.9 Based on 1156 reviews 
Description
3 Pole 50A B Curve 10kA Miniature Circuit Breaker
Live Electrical Three Phase MCB – CB350B
The Live Electrical CB350B 3 Pole 50A B Curve 10kA MCB offers dependable protection for commercial 3-phase systems. Its B Curve tripping characteristic makes it ideal for circuits with lighter loads, such as lighting or small appliances. Additionally, the 10kA breaking capacity ensures effective fault current protection, making this MCB a cost-effective solution for projects where budget is a concern but quality cannot be compromised.
Key Features:
- 3 Pole 50A MCB: Specifically designed for 3-phase systems, offering a current rating of 50 Amps.
- B Curve Tripping Characteristic: Ideal for circuits with lighter loads, such as lighting or small appliances, tripping at 3 to 5 times the rated current.
- 10kA Breaking Capacity: Provides reliable protection against fault currents up to 10kA, safeguarding against overloads and short circuits.
- Voltage Rating: Suitable for use in 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 performance.
- IP20 Protection: Ensures safety by preventing accidental contact with live parts, suitable for 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. This makes it suitable for circuits with lighter loads, such as lighting or small appliances in commercial environments.
2. Can this MCB be used for 3-phase systems?
Yes, this 3-pole MCB is specifically designed for commercial 3-phase systems and protects circuits handling up to 50 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 highly durable, rated for 8,000 electrical operations and 20,000 mechanical operations, making it a reliable option for long-term use in commercial systems.
5. Can this MCB operate in extreme temperatures?
Yes, it operates efficiently between -5°C and +40°C, and it can be stored safely in conditions ranging from -25°C to +70°C, ensuring durability in various environments.
Conclusion
The Live Electrical CB350B 3 Pole 50A B Curve 10kA MCB provides a cost-effective solution for protecting circuits with lighter loads, such as lighting and small appliances in commercial 3-phase systems. Its B Curve tripping characteristic and 10kA breaking capacity offer reliable protection, ensuring safety and performance in budget-conscious projects.
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