zero phase ZCT for ammeter 30A PIN type Zero-phase earth leakage output 22mA

Jiaxing Wisdom Electronic Tech Co., Ltd.is a science and technology manufacturer specialized in research, development, production and sales of latching relay, shunt resistors and current transformer. WSD passed ISO9001-2008, ISO14001: 2004 and OHSAS18001:2007. 

Currently more than 50 kinds of Current transformer with over 100 specifications are under production, ranging from WSD-701 to WSD-753 and continuing being updated in our website. Primary maximum current is from 5A to 200A. Some products are equipped with anti-dc component and anti 300-500mT magnetic disturbance. Products precision reaches 0.05 grade.

The main products attain certificates of CQC, VDE, UL and ROHS, etc. Furthermore, WSD attended Conference of Technical specifications of components - Part eighth, used in electrical energy meters of National Grid Corp standard. Also, it is one of the drafters of “latching relay used in electrical energy meter” of Standardization Technical Committee of National Electrical Instrument.

Latching relays are widely used in all kinds of application areas of smart meter, smart home, load control, synchronous switch, electrical leakage protector, etc.

WSD has a long-term partnership with foreign customers from Denmark, Japan, Korea, Spain, etc, and sets many independent automated production lines. WSD actively participates in the development of global smart grids of China, Denmark, Spain, etc. and is recognized by international famous electricity meter manufacturers and have a long-term collaboration.