FAQS

A:R, S, T are input terminals of three-phase power supply of frequency converter.U, V, W are output terminals of frequency converter, and connected three-phase asynchronous motor P+ and PB are connected to the brake unit, P+ and P- are connected to DC (solar panel)

A:Our production strictly follow ISO9001 quality control system. After four times quality inspect and high temperature testing we will print “QA” pass.

A:We accept OEM and ODM with your autherization.

A:We offer DC MCB from 1A to 125A, and DC MCCB from 63A to 630A.

A:Our DC MCB is designed for solar PV system, all the parts in the DC MCB are for direct current standard. Not all the MCB are DC MCB!

A:It can connect, carry and break the current under normal circuit conditions. Under specified abnormal conditions (such as short-circuit current), A mechanical switching device that can also switch on, carry-fixed time and break current.
With current overload protection and line short circuit protection, the rated current does not exceed 125A.

A:We can make 300,000 pole one month. If you have order plan, feel free to contact us, I will tell you delivery time according to your demand.

A:The circuit breaker is generally selected at 1.5 times the normal working current.

A:P represents the number of poles, N represents the zero line, 2P represents that both poles of the miniature circuit breaker have thermal and magnetic protection functions, and the width is 36mm;
And 1P+N, only the hot wire thermal magnetic protection function, the N pole has no thermal magnetic protection function, but it will be disconnected from the live wire at the same time, the width is 18mm;
Therefore, 1P+N is more economical than 2P, and it also has higher safety. It is suitable for applications with small current such as lighting circuits.

A:Please contact our sales staff and leave a message that you need which poles, current, quantity, EXW/FOB or CIF,
we will reply you as soon as we receive the message.