Comparison

Fault Current Calculator vs Arc Flash Label Calculator

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

Arc Flash Label Calculator

Calculate and generate arc flash labels for electrical equipment. Input data to produce PDF labels based on NFPA 70E standards, including incident energy and approach boundaries. Supports various circuit breakers, fuses, and voltage levels.

Highlights
  • Arc flash label calculation
  • NFPA 70E Annex D.4 methodology
  • Support for MCCB, ICCB, LSI, and fuses
  • Calculates Incident Energy, Arc Flash Boundary, Approach Boundaries
  • Generates PDF labels (4 per sheet)
  • Supports low, medium, and high voltage equipment
  • Custom configurations for gap, distance, and time
Read full description

An easy to use develop arc flash label calculator and label generator. Input the necessary information into the app and it will generate a PDF label using NFPA 70E Annex D.4 (VAC) arc flash label calculations & methodology. Support for circuit breakers: MCCB, ICCB & LSI (Electronic LVPCB) and fuses by Cooper Bussmann and Ferraz-Shawmut including Classes: RK1, RK5, L, J, CC, T & H. Wide support for different overcurrent protection devices and pre-programmed models are setup for easy use. Custom configurations are supported by adjustments conductor gap, working distance and arcing time. Arc flash label calculates and includes: Incident Energy [cal/cm^2], Arc Flash Boundary, Limited Approach Boundary, Restricted Approach Boundary, Hazard Risk Category, voltage and short circuit current. Labels output 4 per sheet using standard 4 label template. Develop arc flash labels for low, medium and high voltage three phase equipment up to 15,000VAC and 1,000VDC. High voltage package required for voltages over 220V. Quick preset options to support major international standards. Requires Mail app configured for outgoing email.

Screenshots

Fault Current Calculator4 screens
Arc Flash Label Calculator3 screens

Verdict

The call

The clearest difference is review sentiment: Arc Flash Label Calculator at 50% against Fault Current Calculator's 0%. Arc Flash Label Calculator also leads on rating (3.5 vs 3.0) and update cadence (fortnightly vs every 4 months). Fault Current Calculator's advantage is ratings volume (27 vs 6). On price, ads, in-app purchases 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 and Arc Flash Label Calculator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Arc Flash Label Calculator holds the better App Store score, 3.5 against 3.0. Both are backed by a comparable volume of ratings — 27 and 6 respectively. Written reviews point the same way: 0% of Fault Current Calculator's written reviews are positive against 50% of Arc Flash Label Calculator's.

UpkeepUpdate frequency

Fault Current Calculator ships an update every 4 months, Arc Flash Label Calculator fortnightly. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard6 real differences · 4 level
Fault Current Calculator versus Arc Flash Label Calculator: the parameters behind the verdict, then further details
ParameterFault Current CalculatorArc Flash Label Calculator
PriceFreeFree
Rating3.0 (27 ratings)3.5 (6 ratings) — better
Positive reviews0.0% of reviews50.0% of reviews — better
Number of ratings27 — better6
Update frequencyEvery 4 monthsFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS14.09.0 — better
Further details — not scored
Size25 MB20 MB
Age rating17+4+
DeveloperCooper Bussmann, LLCOctagon Seven LLC

Customer experience

Fault Current Calculator

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

Arc Flash Label Calculator

All ratings4 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

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
1 purchases

Arc Flash Label Calculator

One-time1
  • Unlock High Voltage Arc Flash$19.99

Questions

Is Fault Current Calculator free?
Fault Current Calculator is free to download, with in-app purchases available.
Is Arc Flash Label Calculator free?
Arc Flash Label Calculator is free to download, with in-app purchases available.
Which has better reviews, Fault Current Calculator or Arc Flash Label Calculator?
Arc Flash Label Calculator is rated higher. Fault Current Calculator averages 3.0 out of 5 from 27 ratings, while Arc Flash Label Calculator averages 3.5 from 6 ratings.
Do Fault Current Calculator or Arc Flash Label Calculator have ads?
Neither Fault Current Calculator nor Arc Flash Label Calculator shows ads.
Which is updated more often, Fault Current Calculator or Arc Flash Label Calculator?
Fault Current Calculator ships an update every 4 months, and Arc Flash Label Calculator fortnightly. Most recently, Fault Current Calculator was updated on November 1, 2026 and Arc Flash Label Calculator on November 2, 2026.

Other comparisons