Paidong Industrial Zone Qiligang,Yueqing City,Zhejiang province,China.
The functions of DC MCB and AC MCB are the same. They both protect electrical appliances and other load equipment from overload and short-circuit problems, and protect the circuit safety. but the usage scenarios of AC MCB and DC MCB are different.
It generally depends on whether the voltage used is alternating current states or direct current states. Most of DC MCB uses some direct current systems like new energy, solar PV, etc. The voltage states of DC MCB is generally from DC 12V-1000V.
The difference between AC MCB and DC MCB by only physical parameters, the AC MCB has labels of the terminals as LOAD and LINE terminals whereas the DC MCB will have positive (+) or negative (-) sign on its terminal.
Due to the DC MCB has a marking of ‘+’ and ‘-’ symbol only, it is often easy to connect incorrectly. If the DC miniature circuit breaker is connected or wired incorrectly, there are possibilities of problems occurring.
In case of overload or short circuit, the MCB will not be able to cut the current and put out the arc, this may lead to the breaker burning out.
Therefore, DC MCB has a marking of ‘+’ and ‘-’ symbols, still need to mark the circuit direction and wiring diagrams, as shown below:
The light radiation from the sun falls on the solar panel and generates a certain direct current through the process of photovoltaic effect.
Each individual solar panel generates less energy, but can be connected with other solar panels in parallel or in series to generate more energy as a solar array.
TOSSD-PV1-1-T DC 1000V solar combiner box
TOSSD-PV1-1-T DC 1000V solar combiner box
| Model | TOSSD-PV1-1 | TOSSD-PV2-1 | TOSSD-PV4-1 | TOSSD-PV4-2 | ||||||||||||||
| Electrical parameters | ||||||||||||||||||
| System maximum DC voltage | 550 | 1000 | 550 | 1000 | 550 | 1000 | 550 | 1000 | ||||||||||
| Maximum input current per channel | 20A | 20A | 20A | 20A | ||||||||||||||
| Maximum number of input channels | 1 | 2 | 4 | 4 | ||||||||||||||
| Maximum output switching current | 16A/20A | 20A/32A | 50A/63A | 20A/32A | ||||||||||||||
| Number of inverter MPPT | 1 | 1 | 1 | 2 | ||||||||||||||
| Number of output | 1 | 1 | 1 | 2 | ||||||||||||||
| Surge lightning protection | ||||||||||||||||||
| Class | T2 | T2 | T2 | T2 | ||||||||||||||
| Nominal discharge current | 20kA | 20kA | 20kA | 20kA | ||||||||||||||
| Maximum discharge current | 40kA | 40kA | 40kA | 40kA | ||||||||||||||
| Voltage protection level | 2.8kV | 3.8kV | 2.8kV | 3.8kV | 2.8kV | 3.8kV | 2.8kV | 3.8kV | ||||||||||
| Maximum continuous working voltage | 630V | 1050V | 630V | 1050V | 630V | 1050V | 630V | 1050V | ||||||||||
| Pole | 2P | 3P | 2P | 3P | 2P | 3P | 2P | 3P | ||||||||||
| Structural features | Plug-in module | Plug-in module | Plug-in module | Plug-in module | ||||||||||||||
| system | ||||||||||||||||||
| Protection level | IP66 | |||||||||||||||||
| Output switch | DC circuit breaker (standard) / DC rotary isolating switch (optional) | |||||||||||||||||
| TOWMC4 Waterproof connector | Standard | |||||||||||||||||
| Solar power DC fuse | Standard | |||||||||||||||||
| Solar power DC surge protector | Standard | |||||||||||||||||
| Monitoring module | N | |||||||||||||||||
| Anti-reverse diode | N | |||||||||||||||||
| Box material | PVC | |||||||||||||||||
| Installation method | Surface Wall-mounted | |||||||||||||||||
| Operating temperature | -25℃~+55℃ | |||||||||||||||||
| Altitude | 2000 M | |||||||||||||||||
| Allowable relative humidity | 0~95%，No condensation | |||||||||||||||||
tongou was established in 1993 and is the trademark of Changyou Technology. We position ourselves as providers of intelligent product solutions for high and low voltage electrical systems, taking on solving customers’ pressures and challenges as our responsibility and creating value for them. We utilize intelligent products to serve global customers, making life smarter and more convenient to benefit your life.
Paidong Industrial Zone Qiligang,Yueqing City,Zhejiang province,China.
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