4.9 Based on 1167 reviews 
Description
3 Pole 20A D Curve 10kA Miniature Circuit Breaker
Live Electrical Three Phase MCB – CB320D
The Live Electrical CB320D 3 Pole 20A D Curve 10kA MCB provides reliable protection for commercial 3-phase systems. Its D Curve tripping characteristic makes it ideal for circuits that experience high inrush currents, such as those found in motors, transformers, and heavy machinery.
Additionally, the 10kA breaking capacity ensures safe and effective interruption of fault currents, making this MCB a cost-effective solution for projects where both quality and budget are important.
Key Features:
- 3 Pole 20A MCB: Designed for 3-phase systems with a current rating of 20 Amps.
- D Curve Tripping Characteristic: Suited for circuits with high inrush currents, tripping at 10 to 20 times the rated current, ideal for motors and heavy machinery.
- 10kA Breaking Capacity: Safely handles fault currents up to 10kA, offering robust protection against overloads and short circuits.
- Voltage Rating: Compatible with 230/400V systems, operating at 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 parts, enhancing safety in commercial and industrial 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 D Curve MCB used for?
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 found in motors, transformers, or heavy machinery in industrial settings.
2. Is this MCB suitable for 3-phase systems?
Yes, this 3-pole MCB is specifically designed for commercial 3-phase systems. It provides reliable protection for circuits that carry up to 20 amps, ensuring safety in demanding environments.
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. This level of protection is essential in preventing overloads and short circuits, particularly in heavy-duty applications.
4. How durable is this MCB?
This MCB is rated for 8,000 electrical operations and 20,000 mechanical operations, making it a durable solution that can withstand the rigors of long-term use in commercial and industrial applications.
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 CB320D 3 Pole 20A D Curve 10kA MCB offers dependable protection for circuits with high inrush currents, such as those found in motors, transformers, and other heavy machinery. Its D Curve tripping characteristic and 10kA breaking capacity make it ideal for commercial 3-phase systems. Additionally, its durable design ensures long-lasting performance, making it a cost-effective option for high-demand environments.
For project pricing, send us your list of required items via WhatsApp or email, and we’ll provide competitive rates tailored to your needs.
Explore more Live Electrical products:
