Joslyn Clark Controls

World leader in Vacuum Contactor Products and Technologies

                               

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.

POWER UTILITIES

In the utility and power industry, failure is not an option. Power plants require reliable power switching and motor starting solutions to ensure a dependable supply of electricity at all times in order to prevent a costly and time consuming breakdown. That’s why more leading utility companies choose Joslyn Clark, a recognized leader in vacuum contactor manufacturing for use in power plants. Applications include water pumping, blowers, conveyors, capacitor switching and other power switching applications. For utility applications, our contactor and starter solutions offer power utilities safe, dependable solutions with a small environmental footprint for use in motor starting and power supply applications.

Steel Mills and Primary Metals

No one knows the meaning of “Time is money” better than mill operators. For you, maintaining high productivity is a critical component of long term success. And that means taxing hours of non-stop operation for the equipment and other machinery. For mill applications, our contactor and starter solutions offer mill operators and technicians safe, dependable solutions with a small environmental footprint for use in motor starting and power supply applications. The applications for our vacuum contactors include electric furnaces, cranes, water pumping, blowers, conveyors, saw motors, chipper motors and other power switching requirements.

HVAC and Pumping

Because the required flow of fluid or air never stops, the pumping/compressor industry requires continuous, dependable performance from its pumping equipment. And that requires reliable power switching and motor starting solutions to ensure the electricity keeps flowing so the water does, too. For pumping applications, our contactor and starter solutions offer safe, dependable solutions with a small environmental footprint for use in motor starting and power supply applications. Pumping applications include across the line starting and reduced voltage starting of motor up to 3,000 HP.

Mining

The mining industry contains some of the world’s harshest environments and most demanding applications. That’s why their equipment requires reliable power switching and motor starting solutions to ensure dependable productivity in potentially hazardous surroundings. As one of the world’s leading manufacturers of contactor and starter switches, Joslyn Clark is widely respected by leading coal mine machine builders. That’s why they use our products for applications such as long wall mining equipment, continuous miners, conveyors, power centers and other related equipment.

Joslyn Clark CV contactors are compact in size to offer a solution to customers looking for an alternative to air break contactor for extended operating life in rugged applications.

The Joslyn Clark line of low and medium voltage vacuum contactors and motor control equipment incorporate a vacuum contactor. The vacuum contactor provides for a compact design that has unique features and offers numerous safety benefits, resulting in a simple, safe, and maintenance-free starter for the mining industry.

Joslyn Clark's vacuum contactor line is well-suited for tough industrial applications. Available in NEMA sizes 4, 5, and 6, Joslyn Clark's series of USAVAC® vacuum contactor products enclose the power contacts inside a vacuum chamber. This design feature makes the vacuum contactor more resistant to harsh environments, compact, quiet, and long-lived.

Joslyn Clark's vacuum contactor products are fully phase-insulated. In addition, all materials that go into a Joslyn Clark vacuum contactor are subjected to rigorous chemical and analytical testing. Our vacuum contactor uses high alumina ceramics for their high temperature and favorable out-gassing characteristics. Contact materials are selected for transient voltage generation control.

Additionally, these Joslyn Clark vacuum contactor products are assembled in a clean-room environment and final degaussing is performed in a one step process at a high temperature to ensure a higher degree of vacuum.

Joslyn Clark USAVAC family of vacuum contactors offers a variety of contactors and starters for motor, transformer, and capacitor switching. They comply with National NEMA, NEC, UL, and International CSA standards.

Joslyn Clark Reversing AC Starters combine the reversing contactor load switching requirements with over current protection to prevent overload damage to the motor.

Joslyn Clark uses medium voltage contactor technology to create a compact design that’s simple, safe and practically maintenance-free. Designed to comply with NEMA 1CS2-324.