Toshiba Transmission & Distribution Systems Asia Sdn. Bhd.


TTDA manufactures medium voltage (MV) substation equipment. Our Vacuum Circuit Breakers (VCB) ranges from 6.6kV to 36kV.

We manufacture Air Insulated Switchgear (AIS), Solid Insulated Switchgears (SIS) and Gas Insulated Switchgears (GIS). Our Ring Main Unit (RMU) is fully SF6 insulated at a range of up to 24kV. TTDA’s robust Compact Substation ranges from 12kV to 24kV with a rating from 500kVA up to 3000kVA. Our manufactured products are type-tested and certified by independent Standards Testing Laboratories (STL) establishments such as CESI (Italy), ASTA (Australia) and KEMA (Netherlands), in compliance with IEC and ANSI standards.


TTDA offers a wide range of innovative products which will contribute to enhance the stability, reliability, efficiency and quality of power systems.

HV primary equipment such as Gas Insulated Switchgears (GIS), Gas Circuit Breakers (GCB), Surge Arrestors, Disconnector Switches as well as Power Transformers (Oil Immersed) and Gas Insulated Transformers (GIT) are some of the products which we manufacture and supply globally. Our products are accredited internationally for conformity to International Electro technical Commission (IEC) and American National Standard Institute (ANSI) standards. Our commitment to quality, safety and reliability is our strength in achieving a foothold in the competitive global HV power equipment market.

Protection & Control

TTDA is a total solution provider for power automation and a manufacturer of Remote Terminal Unit (RTU), Distribution Systems (DAS), Substation Automation Systems (SAS), T&D protection relays and Control Relay Panels (DAS) with design capability of up to 500kV.

We offer a comprehensive solution and product options to best suit protection or automation requirements while allowing customers to choose the most-effective solution for their application.