Tutorial on I&C Cabinet Power Systems: Application and Selection of Circuit Breakers





Jack Coghlan
Product Specialist

Surge and Overcurrent Protection
Phoenix Contact USA, Inc. 

Jack Coghlan is one of Phoenix Contact, USA’s Product Marketing Specialists for their TRABTECH (Surge and Overcurrent Protection) products. USA. He has served in several different capacities within the surge protection industry for nearly three decades. He has practiced his trade in four different continents over the years and several of his published magazine articles and white papers continue to be used as technical reference materials throughout the industry.

Date:               Wednesday, August 17, 2016
Light Dinner:   6:00 PM
Tutorial:          6:45 PM through 8:30 PM
Location:         Westinghouse Electric Corporation Headquarters Cranberry Township, PA

 *** Attention!  Visitor Access Paperwork is Needed for New IEEE Meeting Visitors at Westinghouse HQ Cranberry. If you have not filled out the Visitor Access Paperwork within the last year; Please see below: *** 


This tutorial will cover the application of small (or miniature) circuit breakers for industrial applications. The training session agenda will focus on the following topics:

 Circuit Breaker Basics:
   Overcurrent vs Overload
   Inrush Current
   Branch Circuit Protectors vs
   Supplementary Protectors

    Circuit Breaker Types:
        Hydraulic Magnetic

Circuit Breaker Technology:
    Thermal Magnetic
    Hydraulic Magnetic

Trip Curves Explained:
    Trip Curve differences
        B Curve vs C Curve vs D Curve

    Custom Trip Curves
        M1, F1, SFB

Circuit Breaker Application:
    UL 489 Circuit Breaker Applications
    UL 1077 Circuit Breaker Application
    Hydraulic Magnetic Circuit Breaker Application
    Electronic Circuit Breaker Application 

Other Considerations:
    Circuit Breaker Temperature De-Rating Factors
    Circuit Breaker Series Ratings
    Circuit Breaker Coordination Ratings
    Calculating Cable Lengths 

If time permits, there may be some discussion on fuse applications for I&C cabinet/industrial applications

Steven P. Dobos
      Vice-Chair, PES/IAS Chapters
      IEEE Pittsburgh Section
      (412) 374-6039 work
      (412) 559-0235 mobile
      email: dobos.s.p@ieee.org

   David J. Vaglia, P.E.
      Chair, IAS/PES Chapters
      IEEE Pittsburgh Section
      (412) 374-6513 work
      (412) 491-6944 mobile
      email: davevaglia@ieee.org

1st: Don't Forget to Register for this meeting at the "Register Now" button below by August 16th, 2015 - 2nd: Please fill out the Visitor Access Paperwork per instructions below if you are a new visitor to Westinghouse HQ Cranberry. 

All are invited including our CMU, Pitt, and WVU students!

At our last tutorial sponsored by Phoenix Contact, They provided Professional Development certificates via email after the tutorial.  Contact Dave Vaglia (davevaglia@ieee.org) for additional details. 


Visitor Access Paperwork Needed for Westinghouse HQ IEEE Meeting Visitors, Please see below:
New visitors to Westinghouse HQ will have to fill out escort access paperwork before access is granted to the Westinghouse HQ grounds.  Westinghouse employees or previous visitors that have filled out the HQ escort access paperwork at Westinghouse HQ within the last year, do not need to sign up again.  This escort access paperwork is located on the IEEE Pittsburgh Joint IAS/PES webpage under the files tab, or at the following link: "Escort Required Visitor Access Agreement" .  A “Property Entry Restrictions” page located at the same link will pop up first -please read this then proceed to fill out the escort access paperwork completely "with hand written signature" and email it back to Steve Dobos (dobos.s.p@ieee.org) 412-559-0235 and David Vaglia (davevaglia@ieee.org) before Fri-12AUG16.  Be sure to bring your photo ID on the day of the meeting too. On the day of the meeting, non-Westinghouse personnel will receive a visitors badge from security. At the end of the meeting, please turn in your visitors badge to security before you leave.

If you are not a US Citizen and will be attending the meeting, you will need to fax in your current Passport or Visa information along with the filled out and hand signed escort access paperwork to 724-720-0863, unless you have done so within the last year at HQ. 



Directions from the South: Take 79 North to the route 228 east exit. Stay in right lane and drive by Marriott Hotel (on right). Turn right into Cranberry Woods facility and stay in left lane. Make first left into Westinghouse Headquarters and drive straight through roundabout. Please park in the visitors parking places that are located on either side of the entry road. 

Directions from the East: Take the PA Turnpike (I-76) West following signs for Ohio / I-76 W. Take Exit 28 and follow I-79 N toward Erie. Stay in the entrance lane (right lane) and immediately take Exit 78, PA-228 Cranberry/Mars. Turn right onto PA-228 E toward Mars. Turn right onto Cranberry Woods Drive. Take immediate left at Westinghouse sign and drive straight through roundabout. Please park in the visitors parking places that are located on either side of the entry road.

  Date and Time




  • Date: 17 Aug 2016
  • Time: 06:00 PM to 09:00 PM
  • All times are (GMT-05:00) US/Eastern
  • Add_To_Calendar_icon Add Event to Calendar
  • 1000 Westinghouse Drive
  • Cranberry Township, Pennsylvania
  • United States 16066
  • Building: Westinghouse HQ Building
  • Room Number: CR 176A

  • Co-sponsored by Steven Dobos
  • Starts 27 July 2016 06:00 PM
  • Ends 16 August 2016 05:00 PM
  • All times are (GMT-05:00) US/Eastern
  • No Admission Charge


Jack Coghlan

Jack Coghlan