A30405RNCQ is a 4-pole rotary switch from the A Series designed for multi-position switching applications requiring positive detent operation. The switch features 5-position capability with 4 independent poles (A, B, C, D) and supports both shorting and non-shorting contact configurations. Key electrical specifications include a contact rating of 2.5 AMPS @ 125 V AC and 350 mA @ 125 V DC, with contact resistance below 20 mO typical and insulation resistance of 10? O minimum. The switch operates reliably over a temperature range of -30°C to 85°C with an electrical life of 15,000 make-and-break cycles at full load and up to 300,000 detent operations. This rotary switch is well-suited for automotive, appliance, and industrial equipment applications where reliable multi-pole switching with positive positioning is required.