The Allen-Bradley 100-S /B Auxiliary Contact Block is a high-quality product designed for use with 100-C Contactors and 700-C Relays. Manufactured by the reputable brand Allen-Bradley in the United States, this auxiliary contact block ensures reliable and efficient performance in electrical systems. With its durable construction and compatibility with various contactors and relays, this product is a valuable addition to any industrial or commercial setting requiring precise control and automation.