The Blue Sea Systems 6006 BCD Rotary Switch is a heavy-duty marine switch designed for DC current with a rating of 251-300A. Featuring a screw termination type and a durable construction with ABS/plastic and metal materials, this switch offers reliable on/off operation with its rotary style and is specifically tailored for marine applications. With its sleek black color and the trusted Blue Sea Systems brand, this switch is a top choice for electrical equipment and supplies in the business and industrial sectors.