The solar DC circuit breaker is an electrical device used to protect the safe operation of the DC circuit in the solar photovoltaic system. It is primarily used to prevent damage to circuits and equipment during overcurrent, short circuit, and other fault conditions. Solar DC circuit breakers are usually installed at the output of photovoltaic panels or in the circuit between the charger and the battery. The working principle of the solar DC circuit breaker is that when there is an overload or short circuit in the circuit, it will quickly cut off the circuit to prevent excessive current from flowing through the circuit and equipment. Once the fault is eliminated, the circuit breaker can be manually reset or automatically reset to restore the normal operation of the circuit. Solar DC circuit breakers usually have parameters such as rated current and rated voltage, and the appropriate circuit breaker should be selected according to the requirements of the system. When installing and using solar DC circuit breakers, it is necessary to operate correctly in accordance with the manufacturer's instruction manual to ensure the safe operation of the photovoltaic system.Miniaturization: The solar photovoltaic DC miniature circuit breaker is small in size, easy to install, and takes up less space, which is suitable for the compact space of the solar photovoltaic system. High reliability: The solar photovoltaic DC miniature circuit breaker adopts high-quality materials and advanced production technology, has high reliability and stability, and can run stably for a long time. High sensitivity: solar photovoltaic DC miniature circuit breakers have high-sensitivity fault detection and cut-off functions, which can quickly detect faults in the solar photovoltaic system and quickly disconnect the circuit to protect the safety of equipment and personnel. Quick cut-off: The solar photovoltaic DC miniature circuit breaker has the characteristics of quick cut-off, which can quickly cut off the circuit when a fault occurs, and avoid damage to equipment and systems caused by current overload and voltage shock. Circuit protection and monitoring functions: solar photovoltaic DC miniature circuit breakers can provide circuit protection and monitoring functions for solar photovoltaic systems, monitor current, voltage, power and other parameters, and provide real-time circuit status and fault information.Q 1: What's your DC MCB rated current range? A: We offer DC MCB from 1A to 125A, the FMB7N-63PV DC MCB is 1A~63A, the FMB1Z-125 DC MCB is 80A~125A. Q 2: How do you control quality? A: Firstly, all raw material we selected the high quality one. Secondly, our professional and skilful workers care every details in handling the producing. Thirdly, our quality control department specially responsible for quality checking in each process. Finally, our product strictly follow ISO9001 quality control system, all products must be tested after finished production. Q 3: What’s the difference between DC MCB and AC MCB? A: DC MCB function is the same as AC MCB. It’s difficult to interrupt and extinguish the arc in the DC circuit, so the configuration of the accessories of the same product is much higher than that of the AC model type. Q 4: About delivery time, how long should I wait before get my order? A: It depends on your purchase order. It's better we discuss according to your detail plan. Q 5: What's your payment term? A: We accept T/T, L/C, D/A, D/P, WESTERN UNION, PAYPAL, CASH. Q 6: Which countries you have exported to? A: We already ship to many African countries, Middle East, South America, Southeast Asia, etc. We are happy to see that with our professional services and solutions, our clients get more business and the end users are satisfied. Q 7: Can you help me to select suitable DC MCB? A: Sure, please send us inquiry and tell us your demand, we have professional team to support you in model selection. Q 8: Do you provide OEM & ODM service? A: Yes, we support OEM & ODM. For some items we have MOQ. For more questions, feel free to send us inquiry.