# Substation Short Circuit — short-circuit calculator

> Electrical engineering tool for fault current calculation and equipment rating comparison. (iPhone/iPad app by Carlos Martinez.)

- Source: https://appshunter.io/ios/app/substation-short-circuit/id6749871804 (this page in markdown: same URL + `.md`)
- Developer: [Carlos Martinez](https://appshunter.io/developer/1806845645)
- Category: Business, Productivity
- Price: $4.99
- Rating: 5.00/5 from 2 App Store ratings
- Age rating: 17+
- Requires: iOS 18.0 · 1 MB
- Languages: American English, European Spanish
- Released: 2025-08-14
- Data updated: 2026-08-26
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/substation-short-circuit/id6749871804/reviews.md

## What is Substation Short Circuit?

Substation Short Circuit helps electrical engineers and technicians estimate available fault current before specifying equipment.

Enter system voltage, transformer kVA and impedance, cable length and size, fault type, and X/R ratio. With one tap, get:

• Symmetrical fault current
• Asymmetrical fault current
• Peak current
• Interrupting rating
• Base current and total cable-system impedance

Then check the equipment.

Compare circuit breaker current and interrupting ratings, fuse ratings, and cable ampacity against the calculation. The app flags equipment as adequate or inadequate so you can identify potential issues before specifying gear.

Need conductor data for the same job? Browse the built-in ampacity table for copper and aluminum conductors, common insulation types, temperature settings, and free-air or raceway conditions. View resistance and reactance, then copy conductor details when needed.

Save calculations with a description, search saved jobs later, and load them back into the calculator. Optional iCloud sync keeps saved calculations available across your Apple devices.

Built for the field and office:
• English and Spanish
• iPhone and iPad
• Light and Dark appearance
• No ads

Substation Short Circuit is a calculation aid and is not a substitute for a licensed short-circuit study, applicable codes, manufacturer data, or professional engineering judgment.

## Key features

- Fault current estimation
- Equipment rating comparison
- Conductor ampacity table
- Save and load calculations
- iCloud sync
- English and Spanish support


## Frequently asked questions about Substation Short Circuit

### What is Substation Short Circuit used for?

Substation Short Circuit helps electrical engineers and technicians estimate available fault current before specifying equipment. It calculates symmetrical fault current, asymmetrical fault current, peak current, and interrupting rating.

### How does Substation Short Circuit compare equipment ratings?

The app allows you to compare circuit breaker current and interrupting ratings, fuse ratings, and cable ampacity against the calculated fault current. It flags equipment as adequate or inadequate to identify potential issues.

### Does Substation Short Circuit provide conductor data?

Yes, it includes a built-in ampacity table for copper and aluminum conductors, covering common insulation types, temperature settings, and installation conditions. You can view resistance and reactance, then copy conductor details.

### Can I save my calculations with Substation Short Circuit?

Yes, you can save calculations with a description, search saved jobs later, and load them back into the calculator. Optional iCloud sync makes saved calculations available across your Apple devices.

### What languages does Substation Short Circuit support?

Substation Short Circuit is available in both English and Spanish, making it accessible to a wider range of users.

### Is Substation Short Circuit available on multiple Apple devices?

Yes, the app is built for both iPhone and iPad, offering light and dark appearance options to suit user preferences.

### Does Substation Short Circuit have ads?

No, Substation Short Circuit is ad-free, providing an uninterrupted user experience for its calculations and features.

### What is the price of Substation Short Circuit?

Substation Short Circuit is a paid application, available for $4.99. This one-time purchase grants access to all its features.

## Version history (last 3 releases)

### 3.0 — 2026-08-20

Welcome to Substation Short Circuit 3.0.

• Calculate available fault current from transformer and cable data
• Check circuit breaker, fuse, and cable ratings
• Browse conductor ampacity, resistance, and reactance data
• Save, search, copy, and reload calculations
• Optional iCloud sync for saved calculations
• English and Spanish support

### 2.0 — 2025-09-20

New Clipboard feature for faster data management
 Wire ordering now correct for accurate designs
 Workflow improvements for a smoother experience

### 1.0 — 2025-08-14

No release notes.

## Apps similar to Substation Short Circuit

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| --- | --- | --- | --- |
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| [PTMate](https://appshunter.io/ios/app/ptmate/id1342564820) | — | Free | Business |
| [YPMC Mobile](https://appshunter.io/ios/app/ypmc-mobile/id6742456139) | — | Free | Business |

## More apps by Carlos Martinez

- [GymCade - Workout Tracker](https://appshunter.io/ios/app/gymcade-workout-tracker/id6744276387)
- [OnDiet AI](https://appshunter.io/ios/app/ondiet-ai/id6759893218)
- [Hourloom](https://appshunter.io/ios/app/hourloom/id6761745195)
- [HabitMkr](https://appshunter.io/ios/app/habitmkr/id6789409693)

All apps by Carlos Martinez: https://appshunter.io/developer/1806845645

## Related topics

[substation short circuit](https://appshunter.io/ios/topics/substation-short-circuit) · [short circuit](https://appshunter.io/ios/topics/short-circuit)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*