In 1969, our company managing director, Mr. Yong Ten Man started his career a company called TAMCO Switchgear Malaysia, the first local & largest medium voltage switchgear manufacturing company as a production manager. After 5 years with TAMCO, he left TAMCO and joined ABB (formerly known as ASEA) in 1974 also as a production manager in charge of all mechanical related design and production. During his stay in ABB, he obtained various certification and experience and has been selected few candidates to attend overseas ABB training. He also possessed a Wireman PW4 certificate in 1980.

After 20 years with ABB, he decided to form his own company, YESCO Enterprise in April 1994 and started as a small company providing electrical services and parts trading throughout whole Malaysia. Since then, YESCO has been growing exponentially from a small rented workshop into 4 company’s owned workshop with the state-of-the-art, CNC controlled machines located in Kepong, Sri Damansara near to the city center. Due to the company rapid expansion, in 2005, YESCO was registered as a Sdn Bhd (Private Limited) Company and also registered under SURUHANJAYA TENAGA, LEMBAGA PEMBANGUNAN INDUSTRI PEMBINA MALAYSIA (CIDB) and recently announced GST implementation through JABATAN KASTAM DIRAJA MALAYASIA.



Modification and upgrading of ACB retrofit works. Special Mechanical Design for Castell Key Exchange Box complete set.
Stockist for components of various brands for LV 415V, 12KV, 33KV & 24KV Switchgear. Modification & Upgrading works of 33KV, 12KV & 24KV Ring or Wound Current Transformer.
Supply & assemble Transformer Enclosure, Transformer Busbar for Busduct Flanged End & Cable Termination. Oil Type Transformer Cable Box HT / LV & Outdoor Enclosure.
Various type of HT / LV Panel coupling works. Maintenance servicing, repair & replace works on HT / LV systems.
Fault investigation, site rectification & modification works. Customize of Copper Flexible Link.
Supply of YESCO Anti Condensation Heater 80 / 100W 240V. Supply PT Fuse Holder for PT Fuse.
Supply Temperature Controller & Protection Relay. Main Tinted Earth Bar Link c/w Insulator and Bolts & Nuts.