The Square D 8903L060 is a multipole lighting contactor used to control lighting and electrical heating loads in commercial and industrial electrical systems. It is part of the 8903L series commonly installed in lighting control panels and power distribution equipment. The contactor typically features six normally open poles and can switch loads up to about 30 amps at voltages up to 600 VAC. It operates using an electromagnetic coil that allows a low-power control signal to switch higher-power circuits. The unit is designed for panel mounting and provides reliable switching performance for building automation and lighting control applications.