Factory selling Micro Circuit Breaker - NB1 2Pole din rail circuit breaker – Simply Buy Detail:
DC MCB1(Mini circuit breaker)supplementary protectors are designed to provide over current protection within appliances or electrical equipment, where a branch circuit protection is already provided or not required. Devices are designed for direct current (DC) control circuit applications.It’s din rail mounted type and Current form 1A to 63A and voltage 110VDC ,125VDC to 250VDC 440V DC .
Features:
• B C trip curves models available for general
use and DC applications
• D trip curve models available for high starting
current applications such as motor starting
• Current ratings up to 63A
• Maximum 480VAC (multi-pole), 277VAC (single-pole)
• 5000 A Interrupt Rating
• DIN rail mount chassis
• Captive terminal screws won’t fall out
• Mechanical life: 20000 times.
• Electric life: 4000 times
• Captive terminal screws won’t fall out
Tripping curves
B curve
When the short-circuit currents are weak (generators, long cables).
Power circuit:
ratings: 1 to 63 A set at 30 °C
tripping curve: the magnetic trip units operate between 3 and 5 In.
C curve
Cables feeding conventional loads.
Power circuit:
ratings: 0.5 to 63 A set at 30 °C
tripping curve: the magnetic trip units operate between 5 and 10 In.
D curve
Loads with high inrush currents (motors, transformers).
Power circuit:
ratings: 0.5 to 63 A set at 40 °C
tripping curve: the magnetic trip units operate between 10 and 14 In.
| Max Voltage | Rated Amps | 1 Pole | 2 Pole | 3 Pole | 4 Pole |
| B Curve 5KA Single-pole: 277VAC 110VDC Multi-pole: 480VAC 125VDC |
1 | MCB1-B1-1P | MCB1-B1-2P | MCB1-B1-3P | MCB1-B1-4P |
| 2 | MCB1-B2-1P | MCB1-B2-2P | MCB1-B2-3P | MCB1-B2-4P | |
| 3 | MCB1-B3-1P | MCB1-B3-2P | MCB1-B3-3P | MCB1-B3-4P | |
| 4 | MCB1-B4-1P | MCB1-B4-2P | MCB1-B4-3P | MCB1-B4-4P | |
| 6 | MCB1-B6-1P | MCB1-B6-2P | MCB1-B6-3P | MCB1-B6-4P | |
| 10 | MCB1-B10-1P | MCB1-B10-2P | MCB1-B10-3P | MCB1-B10-4P | |
| 16 | MCB1-B16-1P | MCB1-B16-2P | MCB1-B16-3P | MCB1-B16-4P | |
| 20 | MCB1-B20-1P | MCB1-B20-2P | MCB1-B20-3P | MCB1-B20-4P | |
| 25 | MCB1-B25-1P | MCB1-B25-2P | MCB1-B25-3P | MCB1-B25-4P | |
| 32 | MCB1-B32-1P | MCB1-B32-2P | MCB1-B32-3P | MCB1-B32-4P | |
| 40 | MCB1-B40-1P | MCB1-B40-2P | MCB1-B40-3P | MCB1-B40-4P | |
| 50 | MCB1-B50-1P | MCB1-B50-2P | MCB1-B50-3P | MCB1-B50-4P | |
| 63 | MCB1-B63-1P | MCB1-B63-2P | MCB1-B63-3P | MCB1-B63-4P | |
| Max Voltage | Rated Amps | 1 Pole | 2 Pole | 3 Pole | 4 Pole |
| C Curve 5KA Single-pole: 277VAC 110VDC Multi-pole: 480VAC 125VDC |
1 | MCB1-C1-1P | MCB1-C1-2P | MCB1-C1-3P | MCB1-C1-4P |
| 2 | MCB1-C2-1P | MCB1-C2-2P | MCB1-C2-3P | MCB1-C2-4P | |
| 3 | MCB1-C3-1P | MCB1-C3-2P | MCB1-C3-3P | MCB1-C3-4P | |
| 4 | MCB1-C4-1P | MCB1-C4-2P | MCB1-C4-3P | MCB1-C4-4P | |
| 6 | MCB1-C6-1P | MCB1-C6-2P | MCB1-C6-3P | MCB1-C6-4P | |
| 10 | MCB1-C10-1P | MCB1-C10-2P | MCB1-C10-3P | MCB1-C10-4P | |
| 16 | MCB1-C16-1P | MCB1-C16-2P | MCB1-C16-3P | MCB1-C16-4P | |
| 20 | MCB1-C20-1P | MCB1-C20-2P | MCB1-C20-3P | MCB1-C20-4P | |
| 25 | MCB1-C25-1P | MCB1-C25-2P | MCB1-C25-3P | MCB1-C25-4P | |
| 32 | MCB1-C32-1P | MCB1-C32-2P | MCB1-C32-3P | MCB1-C32-4P | |
| 40 | MCB1-C40-1P | MCB1-C40-2P | MCB1-C40-3P | MCB1-C40-4P | |
| 50 | MCB1-C50-1P | MCB1-C50-2P | MCB1-C50-3P | MCB1-C50-4P | |
| 63 | MCB1-C63-1P | MCB1-C63-2P | MCB1-C63-3P | MCB1-C63-4P | |
| Max Voltage | Rated Amps | 1 Pole | 2 Pole | 3 Pole | 4 Pole |
| D Curve 5KA Single-pole: 277VAC 110VDC Multi-pole: 480VAC 125VDC |
1 | MCB1-D1-1P | MCB1-D1-2P | MCB1-D1-3P | MCB1-D1-4P |
| 2 | MCB1-D2-1P | MCB1-D2-2P | MCB1-D2-3P | MCB1-D2-4P | |
| 3 | MCB1-D3-1P | MCB1-D3-2P | MCB1-D3-3P | MCB1-D3-4P | |
| 4 | MCB1-D4-1P | MCB1-D4-2P | MCB1-D4-3P | MCB1-D4-4P | |
| 6 | MCB1-D6-1P | MCB1-D6-2P | MCB1-D6-3P | MCB1-D6-4P | |
| 10 | MCB1-D10-1P | MCB1-D10-2P | MCB1-D10-3P | MCB1-D10-4P | |
| 16 | MCB1-D16-1P | MCB1-D16-2P | MCB1-D16-3P | MCB1-D16-4P | |
| 20 | MCB1-D20-1P | MCB1-D20-2P | MCB1-D20-3P | MCB1-D20-4P | |
| 25 | MCB1-D25-1P | MCB1-D25-2P | MCB1-D25-3P | MCB1-D25-4P | |
| 32 | MCB1-D32-1P | MCB1-D32-2P | MCB1-D32-3P | MCB1-D32-4P | |
| 40 | MCB1-D40-1P | MCB1-D40-2P | MCB1-D40-3P | MCB1-D40-4P | |
| 50 | MCB1-D50-1P | MCB1-D50-2P | MCB1-D50-3P | MCB1-D50-4P | |
| 63 | MCB1-D63-1P | MCB1-D63-2P | MCB1-D63-3P | MCB1-D63-4P |
Product detail pictures:




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We also offer product sourcing and flight consolidation services. We have our own factory and sourcing office. We can provide you with almost every type of product related to our product range for Factory selling Micro Circuit Breaker - NB1 2Pole din rail circuit breaker – Simply Buy, The product will supply to all over the world, such as: Toronto , Luxembourg , Iraq , Our company abides by the management idea of "keep innovation, pursue excellence". On the basis of assuring the advantages of existing products, we continuously strengthen and extend product development. Our company insists on innovation to promote the sustainable development of enterprise, and make us become the domestic high-quality suppliers.
The factory workers have a good team spirit, so we received high quality products fast, in addition, the price is also appropriate, this is a very good and reliable Chinese manufacturers.
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