Comparison

Fault Current Calculator vs Lug Link

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Fault Current Calculator

This tool helps contractors, engineers, and electricians quickly calculate available fault current on single and three-phase electrical systems. It also assists in sizing fuses and conductors for various circuits and can generate labels for service equipment.

Highlights
  • Calculate available fault current
  • Size fuses and conductors
  • Generate service equipment labels
  • Single and three-phase system support
  • NEC® 110.24 compliance
Features
Read full description

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

About

Lug Link

This utility app helps users select the correct Color-Keyed lug for specific electrical applications. It offers choices for aluminum or copper lugs, hole configurations, and barrel lengths, eliminating the need for cross-referencing part numbers.

Highlights
  • Color-Keyed lug selection
  • Aluminum or copper lug options
  • One or two hole configurations
  • Standard or long barrel options
  • Splice selections available
  • Eliminates part number cross-referencing
Features
Read full description

ABB's Lug Link™ selects the right Color-Keyed lug for the application Among the available specification choices are aluminum or copper compression lugs, one hole or two holes, and standard or long barrel for copper connectors. Splice selections are also available. The selections eliminate the need to cross reference part numbers and enable the correct connector to be identified for the application. 54100 series #8-1000 kcmil One Hole Standard Barrel Copper Lugs 54200 series #8-1000 kcmil Two Hole Standard Barrel Copper Lugs 54400 series #4 up to 750 kcmil High Voltage Copper Lugs 54500 series #8-1000 kcmil Standard Barrel Copper Splices 54900 series #8-1000 kcmil One Hole Long Barrel Copper Lugs 54800 series #8-1000 kcmil Two Hole Long Barrel Copper Lugs & Splices

Screenshots

Fault Current Calculator4 screens
Lug Link3 screens

Verdict

The call

The clearest difference is review sentiment: Lug Link at 100% against Fault Current Calculator's 0%. Lug Link also leads on rating (5.0 vs 3.1) and in-app purchases (none vs 2). Fault Current Calculator's advantage is ratings volume (23 vs 5). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Fault Current Calculator sells 2 in-app purchases, starting at $4.99 per month. Lug Link asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Lug Link holds the better App Store score, 5.0 against 3.1. Both are backed by a comparable volume of ratings — 23 and 5 respectively. Written reviews point the same way: 0% of Fault Current Calculator's written reviews are positive against 100% of Lug Link's.

UpkeepUpdate frequency

Fault Current Calculator ships an update every 4 months, Lug Link weekly. The most recent releases landed on October 2, 2026 and October 3, 2026 respectively.

Scorecard7 real differences · 3 level
Fault Current Calculator versus Lug Link: the parameters behind the verdict, then further details
ParameterFault Current CalculatorLug Link
PriceFreeFree
Rating3.1 (23 ratings)5.0 (5 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings23 — better5
Update frequencyEvery 4 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.09.0 — better
Further details — not scored
Size25 MB15 MB
Age rating17+4+
DeveloperCooper Bussmann, LLCABB Installation Products Inc.

Customer experience

Fault Current Calculator

All ratings23 ratings
Positive47.8%
Neutral8.7%
Negative43.5%
Written reviews10 reviews
Positive0.0%
Neutral20.0%
Negative80.0%

Lug Link

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Fault Current Calculator

Subscriptions2
  • Pro Monthly Subscription7 Days trial$4.991 Month
  • Pro Annual Subscription7 Days trial$39.991 Year
None

Lug Link

No in-app purchases

Questions

Is Fault Current Calculator free?
Fault Current Calculator is free to download, with in-app purchases available.
Is Lug Link free?
Lug Link is free to download, with no in-app purchases.
Which has better reviews, Fault Current Calculator or Lug Link?
Lug Link is rated higher. Fault Current Calculator averages 3.1 out of 5 from 23 ratings, while Lug Link averages 5.0 from 5 ratings.
Do Fault Current Calculator or Lug Link have ads?
Neither Fault Current Calculator nor Lug Link shows ads.
Which is updated more often, Fault Current Calculator or Lug Link?
Fault Current Calculator ships an update every 4 months, and Lug Link weekly. Most recently, Fault Current Calculator was updated on October 2, 2026 and Lug Link on October 3, 2026.

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