Main Product

S7DC Mini Circuit breaker

· DC 1000V 63Amp
· It is suitable for Protection to DC circuit overload and short circuit
· complies with IEC898 and GB10963 Standard

· DC 1000V 63Amp</br>

·  It is suitable for Protection to DC circuit overload and short circuit</br>
·  complies with IEC898 and GB10963 Standard

All our own QC staffs are responsible for performing

Stringent quality inspections under ISO 9001:2000


Wenzhou Hawai Electron & Electric Manufacture Co., Ltd. also known as YUANKY was started in 1989.YUANKY has more than 1000 employees, covering an area of more than 65000 square meters. We own modern production lines and high controlling equipment with scientific administration, professional engineers, high trained technicians and skilled workers. YUANKY integrates R & D, production, sales, and service to form a complete electronic and electrical solution..

  • hy
  • About Us 01
  • About Us 02
  • about  us 02
  • about  us 03
  • about  us 04


  • Time Relay Working Principle

    Time relay is a control appliance that uses electromagnetic principle or mechanical principle to achieve time delay control. It has many types, such as air damping type, electric type and electronic type. Time relays can be divided into two types: energized time delay type and power-off time dela...

  • What is the role of solid state relays? Features, principles, advantages and disadvantages, etc.

    The role of solid state relays Solid-state relays are actually non-contact switching devices with relay characteristics that use semiconductor devices to replace traditional electrical contacts as switching devices. Single-phase SSR is a four-terminal active device, of which two input control ter...

  • What does 5(20)A on the meter mean?

    Everyone is probably familiar with electric energy meters. Nowadays, smart meters are often used to measure and bill household electricity. If you look closely, you will find that there is a parameter 5 (60) written in the prominent position of the electric energy meter. For example, the paramet...

  • The working principle of the leakage protector

    1. What is a leakage protector? Answer: The leakage protector (leakage protection switch) is an electrical safety device. The leakage protector is installed in the low-voltage circuit. When leakage and electric shock occur, and the operating current value limited by the protector is reached, it w...

  • ​Installation method and installation precautions of power surge arrester

    Installation method of power surge arrester 1. Install the power lightning arrester in parallel. The installation position of the charcoal machine is the rear end of the switchboard or the knife switch (circuit breaker) in the classroom of the satellite teaching viewing point. Use four sets of M8...