4.9 Based on 1156 reviews 
Description
3 Pole 50A D Curve 10kA Miniature Circuit Breaker
Live Electrical Three Phase MCB – CB350D
The Live Electrical CB350D 3 Pole 50A D Curve 10kA MCB provides robust protection for commercial 3-phase systems, particularly in circuits that experience high inrush currents. With a D Curve tripping characteristic, this MCB is ideal for heavy-duty applications, such as motors, transformers, and industrial equipment.
Additionally, its 10kA breaking capacity ensures the safe handling of fault currents. This MCB is a cost-effective choice for projects where quality and budget are both key considerations.
Key Features:
- 3 Pole 50A MCB: Built for 3-phase systems, offering a current rating of 50 Amps.
- D Curve Tripping Characteristic: Best suited for circuits with high inrush currents, like motors and industrial machinery, tripping at 10 to 20 times the rated current.
- 10kA Breaking Capacity: Handles fault currents up to 10kA, protecting circuits from 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 in demanding environments.
- IP20 Protection: Provides safety by preventing accidental contact with live components, ideal for commercial and industrial settings.
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 D Curve MCB used for?
A D Curve MCB trips when the current exceeds 10 to 20 times the rated load, making it ideal for circuits with high inrush currents. This includes motors, transformers, or heavy industrial machinery.
2. Can this MCB be used in 3-phase systems?
Yes, this 3-pole MCB is specifically designed for commercial 3-phase systems. It provides reliable protection for circuits handling up to 50 amps in demanding environments.
3. Why is the 10kA breaking capacity important?
The 10kA breaking capacity ensures that the MCB can safely handle fault currents up to 10,000 amps. This feature is essential in preventing overloads and short circuits in high-demand applications.
4. How durable is this MCB?
This MCB is highly durable, rated for 8,000 electrical operations and 20,000 mechanical operations, ensuring long-term reliability in heavy-duty environments.
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, making it suitable for a variety of applications.
Conclusion
The Live Electrical CB350D 3 Pole 50A D Curve 10kA MCB offers reliable protection for circuits with high inrush currents, such as motors and industrial equipment. Its D Curve tripping characteristic and 10kA breaking capacity make it a perfect choice for commercial 3-phase systems. Furthermore, it delivers long-lasting performance, making it ideal for budget-conscious projects that still demand high quality.
For project pricing, send us your list of required items via WhatsApp or email, and we’ll provide competitive rates tailored to your needs.
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