Marquardt Rocker Switches Toggle switch 623951 - Marquardt 1935.3138, The Marquardt 1935.3138 Toggle switch is a 12 V DC, 10 A switch designed for reliable operation. Its IP65 rating makes it suitable for environments where dust and water resistance are required. This rocker switch is ideal for automotive, marine, or industrial applications. Marquardt 1935.3138 Toggle Switch 12V DC 10A Off/On IP65 Latch