The A10403RNCQ is a four-pole rotary switch featuring 3-position operation with 30° indexing and positive detent action. It is constructed with glass-filled 6/6 nylon (UL 94V-0) housing and actuator, with coin silver movable contacts and brass stationary contacts, all silver-plated for reliable electrical performance. The switch is rated for 2.5 AMPS @ 125 V AC and 350 mA @ 125 V DC, with contact resistance below 20 mO typical and an electrical life of 15,000 make-and-break cycles at full load. Operating temperature range is -30°C to 85°C, with insulation resistance of 10? O minimum and dielectric strength of 1,000 Vrms. This RoHS-compliant switch is suitable for automotive, appliance, and industrial equipment applications requiring multi-pole switching with positive positioning.