Service and Support

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Downloadable Literature

Please see below for a number of product support manuals and other informational literature pertaining to the Joslyn Clark family of products. If you’re looking for information for a specific product or would like to make a special request, please call our customer support line at 1-800-476-6952.

Fire Pump Controls Brochure 

Fire Pump Controls Brochure

Fire Pump Controls Brochure What is it: A comprehensive description of the product capabilities and typical functionality of the Joslyn Clark line of fire pump controllers, as well as information pertaining to their use, maintenance, hardware specifications and other operational points of interest.

How to use it: As the most thorough and complete document we maintain for one of our premier offerings, the Fire Pump Controls Brochure is your first and best source of written information for any question pertaining to our fire pump controller products.


ESP Switchboard Brochure 

VersaShield ESP Switchboard Brochure

VersaShield ESP Switchboard Brochure What is it: Informational document about the overall function and competitive advantages of the VersaShield ESP Switchboard. Details include technical specifications, product features and safety considerations associated with its use.

How to use it: Use the VersaShield ESP Switchboard for general product feature information and for its convenient, easy to read features and benefits table.


Vacuum Contactor Brochure 

Vacuum Contactor and Starter Family Brochure

Vacuum Contactor Brochure What is it: Data, specifications and general usage information about the entire Joslyn Clark line of specialty vacuum contacts and starters.

How to use it: Get specific technical information regarding product features, contrast and compare similar products in the contactor family, and learn more about the benefits of choosing Joslyn Clark for your industrial application.


Current Calculators 

Current Chopping a Simple Explanation, and Calculations to Determine Transient Voltages When Using Vacuum Interrupters

Current Calculators What is it: A detailed breakdown of the physics involved in the technology of current chopping.

How to use it: Get formulae, diagrams, and detailed descriptions on the ins and out of current chopping from the people who originally pioneered the technology.