The 7103P3YZQE is a single-pole, on-off-on miniature toggle switch from C&K's 7000 Series, featuring a flattened anti-rotation P3 actuator (0.450" high) and a keyway bushing (Y designation, 0.350" high) for secure panel mounting. The switch employs copper alloy contacts with gold plate over nickel plate, delivering contact resistance below 10 mO typical and supporting electrical ratings of 0.4 VA maximum at 20 V AC or DC. The switch is rated for 40,000 make-and-break cycles at full load, operates reliably across -30°C to 85°C, and features an epoxy terminal seal with 1000 Vrms dielectric strength at sea level. This configuration is ideal for applications requiring reliable switching in compact spaces with anti-rotation protection, such as instrumentation panels, control systems, and industrial equipment where panel-mounted toggle switches are essential.