TSTM Voltage Transformers create a safe working environment. Our products eliminate the hazards that exist due to the exposure of high voltages in Electrical Metering Applications.

About Us

TSTM Inc. is an industry leading manufacturer of secondary voltage transformers. Across the United States, Investor-Owned Utilities, Electric Cooperatives, and Municipal Utilities, trust TSTM products for use in electric metering applications. Our unique line of products create a safe work environment, ensure revenue grade accuracy, and provide necessary component protection for utility, industrial, and commercial installations. Our products are manufactured and assembled in the USA.

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