20A103 is a power transformer manufactured by Thordarson, one of the leading companies in the transformer industry. It is a single-phase, 120V/60Hz, 240V/50Hz transformer that has a maximum output power of 500VA. It has been designed to provide reliable power with minimal downtime, and features short-circuit protection for added safety and protection. Its heavy gauge steel case helps resist corrosion and vibration, and its sheet steel construction ensures efficient transmission of electrical energy. This transformer is suitable for use in a variety of commercial and industrial applications, making it a great choice for those looking for a reliable and durable transformer.