This transformer is designed to convert 120 volts of primary voltage to 24 volts of secondary voltage, with a capacity of 40VA. It is a reliable and efficient solution for HVAC systems that require a stable power supply. The York S1-2940A3541 transformer is built with high-quality materials and meets industry standards for safety and performance. Its compact size makes it easy to install in tight spaces, and its durable construction ensures long-lasting use. This transformer is an essential component for HVAC service technicians who need to maintain or repair heating and cooling systems.