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FAQS

After years of highly efforts in technical R&D, with the support and trust from users, USFULL has achieved remarkable achievements. Products are sold to more than 90 countries and regions domestic and abroad. USFULL brand will be recognized by everyone!

A:We accept T/T, L/C, D/P, WEST UNION, PAYPAL, CASH,etc.

A: We have our own design carton with five layers corrugated material; if have any other special requirement of package, we also support customize service.

A:We can provide OBM, ODM and OEM services.

A:Our production strictly follow ISO9001 quality control system, also we have ERP system for more convenient management & Delivery control.

A:We have ISO9001, CCC, CB, CE, IEC, INMETRO.

A:We already ship to many South America, African countries, Middle East, Southeast Asia etc.

A:Single-phase 220v input, single-phase 220v output;

Single-phase 220v input, three-phase 220v output;

Three-phase 220v input, three-phase 220v output;

Single-phase 220v input, three-phase 380v output;

A:According to your motor power, you can click “Chat Now” on the right and our sales staff will provide you with solutions online.

A:Of course. We have an ERP management system. Once there is an inventory warning,we will prepare materials in advance to meet the urgent needs of customers.

A:Below 30kw, it’s carton package; 37kw and above, it’s wooden package.

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.

A:a. We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important to us.
b. If you have any question for the products you received, please contact us in time and we will try our best to solve the problems and make you satisfied.
c. Please give us the positive feedback.

A:According to your motor power, you can click “Chat Now” on the right and our sales staff will provide you with solutions online.

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:We have solutions for AC/DC switching cabinets. For details, please contact us for sales.

A:Single-phase 220v input, single-phase 220v output;
Single-phase 220v input, three-phase 220v output;
Three-phase 220v input, three-phase 220v output;
Single-phase 220v input, three-phase 380v output;

A:Below 30kw, it’s carton package; 37kw and above, it’s wooden package.

A:Of course. We have an ERP management system. Once there is an inventory warning,
we will prepare materials in advance to meet the urgent needs of customers.

A:We accept OEM and ODM with your autherization.

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