Fault Current Calculator

In-app purchases
4.2
136 reviews
50K+
Downloads
Content rating
Everyone
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About this app

Eaton's Bussmann Series FC2 Available Fault Current Calculator application is an innovative tool developed for contractors, engineers, electricians, and electrical inspectors. This tool can be used on the Bussmann website or out in the field on a mobile device for those needing a quick and simple way to determine available fault current.

With this simple tool, users can:

- Calculate available fault current on single and three-phase systems

- Create and send a label via email for marking the available fault current on service equipment (NEC® 110.24)

- Size fuses and conductors for service, feeder, and branch circuits.

This application, calculations, and other information are intended to clearly present technical information that will determine the available fault current at specific points in an electrical system. Bussmann reserves the right, without notice, to change this application and/or discontinue/ limit its distribution and/or availability. Bussmann also reserves the right to change or update, without notice, any technical information contained in this application. The data and information presented in this application are believed to be accurate. However, any and all liability for the content, or any omissions from this application, including any inaccuracies, errors, or misstatements in such data, calculations or information, is expressly disclaimed. The application, calculations and other information are provided without warranty of any kind, either expressed or implied, but not limited to, the implied warranties of merchantability, or fitness for a particular purpose. Bussmann disclaims any liability for the use of this application, calculations or other information. The complete End-User License Agreement can be found at: https://faultcurrentcalculatorpro.bussmann.com/home/eula
Updated on
Jun 5, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
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Data isn’t encrypted
Data can’t be deleted

Ratings and reviews

4.2
132 reviews
Abraham Ayende
August 13, 2025
Another greedy application, went from free to subscription based.
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Geordie Iselin
January 28, 2022
It wants you to fill in every field including aic. It's just a form not a calculator.
3 people found this review helpful
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A Google user
November 8, 2019
Great app for a quick verification of fault at any point of the system. Thank you.
11 people found this review helpful
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What’s new

Pro version offers:
- Send calculations to ANY email address
- Generate UNLIMITED PDF file of available fault current calculations
- Handle transformer sizes up to 10 MVA
- Save and edit diagrams and mange projects
- Simplified component modification.
- Add generator to the system
- Set default transformer value (from previous selection) for a quick selection
- Add motor contributions for single phase system
- Consolidate multiple project calculations in a single email.

App support

About the developer
Cooper Bussmann, LLC
sasikumarkm@eaton.com
114 Old State Rd Ellisville, MO 63021 United States
+91 99447 92387