Killark® XSD/XSX Series of hazardous location manual motor starting switches provide manual starting and stopping of motor loads. Rated for indoor applications, the copper-free aluminum construction is ideal for harsh and hazardous environments. Standard motor rated switch configurations include square D type F with overload protection (XSD Series and square D type K (XSX Series . Overload heaters are required, but not included as standard and need to be specified based on FLA (full load amps) of motor.