Thalheimer Transformers Variac 634085 - Thalheimer KSS 103, The Thalheimer KSS 103 is a variable transformer designed to provide adjustable voltage from 0 to 42 volts. With a power rating of 105 VA and a current capacity of 2.50 A, it is commonly used in applications requiring precise voltage control. Typical uses include laboratory settings, educational environments, and testing facilities. Thalheimer KSS 103 Variac 42V 105VA 2.5A Low Voltage Control Made in Germany