Trane TRR1873 Transformer 326058-758 The stainless steel diaphragm construction

The stainless steel diaphragm construction resists corrosion and provides consistent superheat control under fluctuating head pressures

Smith and Lochinvar models requiring this specific OEM gas train configuration

Durable wall-mounted design ensures long-term performance in both residential and light commercial settings

diaphragm/seat assembly

Smith commercial units requiring the 100189053 part number

Trane TRR1873 Transformer 326058-758 The stainless steel diaphragm constructionFor veteran HVAC contractors and industrial electricians, the Trane TRR1873 Transformer is a high capacity power solution engineered for stable voltage regulation in demanding thermal and mechanical environments. This unit features a 120V primary input and a substantial 375VA power rating, providing a consistent 3A secondary output. Its robust construction is specifically designed to handle the inductive loads and inrush current typical of industrial