Fault Current Calculator vs Lug Link
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Calculate available fault current
- Size fuses and conductors
- Generate service equipment labels
- Single and three-phase system support
- NEC® 110.24 compliance
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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
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.
- 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
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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
Verdict
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
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.
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.
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.
| Parameter | Fault Current Calculator | Lug Link |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (23 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 23 — better | 5 |
| Update frequency | Every 4 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 14.0 | 9.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 15 MB |
| Age rating | 17+ | 4+ |
| Developer | Cooper Bussmann, LLC | ABB Installation Products Inc. |
Customer experience
Fault Current Calculator
Lug Link
In-app purchases
Fault Current Calculator
- Pro Monthly Subscription7 Days trial$4.991 Month
- Pro Annual Subscription7 Days trial$39.991 Year
Lug Link
No in-app purchases
Questions
Is Fault Current Calculator free?
Is Lug Link free?
Which has better reviews, Fault Current Calculator or Lug Link?
Do Fault Current Calculator or Lug Link have ads?
Which is updated more often, Fault Current Calculator or Lug Link?
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