Special Design for Dc Operated Ac Contactor - 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 thinks what customers think, the urgency of urgency to act in the interests of a customer position of principle, allowing for better quality, lower processing costs, prices are more reasonable, won the new and old customers the support and affirmation for Special Design for Dc Operated Ac Contactor - NB1 2Pole din rail circuit breaker – Simply Buy, The product will supply to all over the world, such as: Canberra , The Swiss , Colombia , During the 10 years of operating, our company always try our best to bring consumption satisfaction for user, built a brand name for ourselves and a solid position in the international market with major partners come from many countries such as Germany, Israel, Ukraine, United Kingdom, Italy, Argentina, France, Brazil, and so on. Last but not least, price of our products are very suitable and have fairly high competition with other companies.
Products and services are very good, our leader is very satisfied with this procurement, it is better than we expected,







