B&D Transformer (PT Bambang Djaja) stands as Indonesia’s leading manufacturer of power, distribution, and instrument transformers. Founded in 1985 in Surabaya, B&D made history in 2016 as the first Indonesian company to produce 150kV power transformers, with plans to expand to 500kV.

B&D’s transformers are built for Indonesia’s harsh tropical climate—fully sealed, corrosion-resistant, and tested to IEC, ANSI, and SPLN standards. Their product line includes:

• Distribution Transformers: 10kVA–2000kVA for commercial and industrial use
• Power Transformers: Up to 150kV for PLN and large industrial projects
• Instrument Transformers: CT/PT for metering and protection systems

With a strong local engineering team and in-house R&D, B&D delivers reliable transformers for Indonesia’s power infrastructure growth.