Square D is a leading provider of low-voltage, automation, critical power, cooling and energy storage solutions for both commercial and industrial applications. The Square D catalog includes pressure switches, contactors circuit breakers and transformers. Square D molded-case circuit breakers are designed to protect switchboards, motor control centres and panelboards from overloads or short-circuits. These breakers comprise a thermal-magnetic / electronic trip unit that provides long-time, short-time and adjustable / fixed instantaneous trip functions. Square D Class 2 transformers feature low-impedance windings to accommodate high inrush current and are therefore ideal for use with air-conditioning thermostats, garage door openers and sprinkler system controls. These transformers require an input voltage supply of 120 / 208 VAC. A wide range of these Square D products and related accessories, such as hooksticks, lever arms, auxiliary contacts and mounting hardware, is available on Raptor Supplies, an authorised Square D distributor.