4.9 Based on 1163 reviews 
Description
3 Pole 40A C Curve 10kA Miniature Circuit Breaker
Live Electrical Three Phase MCB – CB340C
The Live Electrical CB340C 3 Pole 40A C Curve 10kA MCB is a reliable and efficient solution for protecting circuits in commercial 3-phase systems. Its C Curve tripping characteristic makes it ideal for circuits that experience higher inrush currents, such as those used with motors and transformers.
With a 10kA breaking capacity, it ensures the safe handling of fault currents, making it a cost-effective choice for projects that require both affordability and quality.
Key Features:
- 3 Pole 40A MCB: Specifically designed for 3-phase systems, supporting a current rating of 40 Amps.
- C Curve Tripping Characteristic: Suited 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 protection from overloads and short circuits.
- Voltage Rating: Compatible with 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: Provides safety by preventing accidental contact with live parts, making it suitable for 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 does a C Curve MCB do?
A C Curve MCB trips when the current exceeds 5 to 10 times the rated load, making it suitable for circuits with high inrush currents, such as motors or transformers commonly found in commercial environments.
2. Can this MCB be used in 3-phase systems?
Yes, this 3-pole MCB is specifically designed for 3-phase systems, offering reliable protection for circuits handling up to 40 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. This provides critical protection against overloads and short circuits, particularly in high-demand environments.
4. How durable is this MCB?
This MCB is rated for 8,000 electrical operations and 20,000 mechanical operations, ensuring long-term reliability for commercial and industrial use.
5. Can this MCB operate in extreme temperatures?
Yes, it operates efficiently between -5°C and +40°C, and it can be stored in environments ranging from -25°C to +70°C, ensuring durability in varying conditions.
Conclusion
The Live Electrical CB340C 3 Pole 40A C Curve 10kA MCB is a cost-effective, high-quality solution for protecting circuits with higher inrush currents. Its C Curve tripping characteristic and 10kA breaking capacity make it perfect for commercial 3-phase systems involving motors, transformers, and other inductive loads. Additionally, this MCB ensures durability and reliable protection, making it ideal for projects that require both performance and budget-friendly pricing.
For project pricing, send us your list of required items via WhatsApp or email, and we’ll offer competitive rates tailored to your needs.
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