The 30-15304 is a non-shorting rotary switch with an enclosed contact design for enhanced reliability. This component provides 3-pole, 4-position switching and is rated for 0.3A at 125V AC. Key electrical characteristics include a maximum initial contact resistance of 20 megohms and a minimum insulation resistance of 100 megohms at 500V DC. It features a 38mm long shaft with a 6.35mm outer diameter, solder-type terminals, and mounts in a standard .375-inch hole, making it suitable for control panels and circuit selection tasks in electronic equipment.