Demanding applications demand Joslyn Clark reliability Our AC and DC contactors, medium voltage controllers, medium voltage vacuum contactors and combination starters are used in some of the most extreme industrial environments in the world. Just a few of the industries and applications our products are used in include water and oil pumping, coal and metal mining, compressors, HVAC, industrial electric furnace control, capacitor switching, rock crushing, crane control and lighting control. The complete line of Joslyn Clark diesel and electric fire pump controllers are known the world-over for their rugged, heavy-duty design, and for their unparalleled performance in enhancing the life safety and fire protection requirements of a wide variety of commercial and industry settings. Manufactured with a combination of solid state electronics and relay logic, our controllers meet or exceed all requirements of the National Fire Protection Association, Standard NFPA 20, are listed by the Underwriters Laboratories, Inc., and are approved by the Factory Mutual System. Legal Entity: Dynapar Corporation