Technical Tips
Starters & Enclosed Product
May 2021
Basics For Selecting A Motor Starter
A Quick guide to the types and details of motor starters.
June 2018
Electronic interface Functionality on CA9 Contactors
What is the ‘ EI ‘ electronic interface function? And – how does it work on the CA9 contactors?
Are there options to use / or not use the ‘ EI ‘ electronic interface functionality on the CA9 contactor?
May 2015
What control circuit options are available on KWIKstarters?
What cover controls do KWIKstarters have? Why can’t I have an HOA or Pilot Light only on the larger KWIKstarters? What does the wire size have to do with the cover control options? What is the difference between remote control and without remote control? The cover control options for these compact starters vary depending on the KWIKstarter size and function. .
May 2015
What is the replacement for KTA3-100 Motor Controllers?
I have a KTA3 in my multi-motor control panel. What is the replacement? What are the alternatives to KTA3 Motor Controllers? KTA3-25 controllers transitioned to KT4 or KT7 controllers. KTA3-100 controllers were replaced with KT7 controllers, but only up to 45 amps. .
May 2015
Troubleshooting Nuisance Tripping of Molded Case Circuit Breakers
The increased use of high efficieny motors requires a closer look at specifications when applied to circuit protection methods. Not considering all of the factors can lead to specification errors and nuisance tripping or worse.
Technical Guide
March 2015
SCCR information for CEP9 Overload Relays
The SCCR values for the CEP9-ESM Sensing modules can be found in the installation instructions included in the box. This is the manner in which UL requires the SCCRs to be specified.
January 2015
Inside Story on Phase Failure Protection
One of the outstanding features of IEC type overload relays is protection of three phase motors in the event of a single phase condition; otherwise known as “open phase” or “phase failure “ in one of the motor leads.
Whitepaper
June 2012
Selecting Fractional Manual Starter Heater Elements
How do you select the right heater element for a fractional manual starter per continuous duty motor ratings?
Whitepaper
May 2012
The big motor and a little motor rule
A little known rule of UL inspectors outlines what protection should be used in multi-motor starter panel applications.
February 2009
Selecting Surge Suppressors
What is the purpose of a surge suppressor? What are the differences between the types of surge suppressors?
Whitepaper
May 2008
The importance of Primary Fuses in enclosed circuit controllers
Most panels without control transformers are ordered without any “optional” control circuit fuse, which can leave the control circuit wiring unprotected.
Whitepaper