Fault Current Calculator (PFC) vs Rolec Connect
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fault Current Calculator (PFC)
This app calculates prospective fault current (PFC) in kA and Amps for single and three-phase circuits. It allows users to input any two values (voltage, earth loop impedance, or PFC) to determine the third, aiding in selecting appropriate circuit breaker ratings.
- Calculate PFC from Zs/Ze and Voltage
- Calculate Zs/Ze from Voltage and PFC
- Calculate Voltage from PFC and Zs/Ze
- PFC calculation in kA and Amps
- Single and three-phase support
- Input any two values to calculate the third
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Fault Current Calculator for iPhone and iPad is a fast, free tool for electricians, contractors, and engineers. Calculate Prospective Fault Current (PFC), Prospective Short-Circuit Current (PSCC), and Prospective Earth Fault Current (PEFC). Enter any two known values - voltage, loop impedance (Zs/Ze), or fault current - and the app instantly calculates the third. KEY FEATURES: PSCC and PEFC calculations: Calculate prospective short-circuit current for L-N or L-L faults and prospective earth fault current for L-E faults. Single-phase and three-phase support: Perform fault-current calculations for both system types. Automatic calculations: Enter any two known values to auto calculate the third. Loop-impedance calculator: Calculate Zs or Ze from voltage and prospective fault current. Formula display: See the formula used for each calculation so you can understand and verify the result. Works offline: Use the app in roof spaces, basements, plant rooms, and other locations without a signal. Dark mode and light mode: Maintain a clear display in different site conditions. 16 languages: Fully translated for electricians worldwide (af, ar, de, es, en, fr, hi, id, it, ja, ko, nl, pl, pt, ru, zh). Fast and free: A clean interface designed to deliver results without unnecessary steps. DEFINITIONS: AIC (Ampere Interrupting Capacity), often written as kAIC for kilo-Amperes, is a specific rating for protective devices that open a circuit, such as circuit breakers and fuses. SCCR (Short-Circuit Current Rating) is the maximum fault current that a complete piece of equipment or electrical assembly (like an industrial control panel, switchboard, or HVAC unit) can safely withstand without causing a hazard. Electrical calculations should be independently verified before safety-critical work. Ensure the calculated prospective fault current does not exceed the protective device's rated breaking capacity. For additional tools, upgrade to Electrical Tools & Reference, which includes calculators for kVA, Max Zs, cable sizing, and more. Pro Certs Software - trusted by electricians since 2011.
Rolec Connect
This app simplifies the setup and configuration of electric vehicle chargepoints, marina utility pedestals, and caravan hook-ups. It allows installers to manage projects, perform test sessions, and streamline their workflow. Owners can adjust device settings like LED brightness and Wi-Fi.
- Seamless device configuration
- Bluetooth connectivity for remote setup
- Manage installation projects
- Perform test charge sessions
- Adjust device settings (LED, Wi-Fi)
- Add project notes and photos
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The Rolec Connect app is easy to use and provides straightforward configuration for both Installers and Owners. For Installers: Installation made simple… Configuring Rolec EV Chargepoints, Marina Utility Pedestals and Caravan Hook-Ups has never been easier! Designed with installers in mind, the Rolec Connect app enables seamless configuration in just a few taps. All you need is a phone equipped with a camera and Bluetooth and you’re good to go. As configuration is carried out over Bluetooth, installers can use the app wherever the location. This means that even in the depths of an underground car park or a remote location, it’s still possible to carry out the configuration. • Create an Installer account to configure devices. • Easily enable communication to the chosen management system or app. • Perform test charge/output sessions on each connector. • Manage all installation projects in one place. • Easily add a new devices to an existing project in the future. • Add project notes, upload photos, and raise support requests. åStreamline your workflow, save time, and power through installations more efficiently than ever. For Owners: Once installed, you can take control of your device’s settings This app is solely for the purpose of managing the device’s configuration settings. Your chosen app will be required for operational functionality. • Connect to your device by either scanning the QR code or searching for nearby devices and entering the device’s Bluetooth password. • Adjust the device’s LED brightness, Wi-Fi and password settings plus more.
Screenshots
Verdict
The clearest difference is monetization model: Rolec Connect at free against Fault Current Calculator (PFC)'s paid. Rolec Connect also leads on ads (none vs shown) and update cadence (fortnightly vs every 14 months). Fault Current Calculator (PFC)'s advantage is review sentiment (33% vs 0%). On price, in-app purchases, device support and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.
Fault Current Calculator (PFC) ships an update every 14 months, Rolec Connect fortnightly. The most recent releases landed on October 14, 2026 and October 23, 2026 respectively.
| Parameter | Fault Current Calculator (PFC) | Rolec Connect |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (2 ratings) — better | — |
| Positive reviews | 33.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 2 — better | — |
| Update frequency | Every 14 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 10 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Pro Certs Software Ltd | Rolec Services Ltd |
Customer experience
Fault Current Calculator (PFC)
Rolec Connect
In-app purchases
Fault Current Calculator (PFC)
No in-app purchases
Rolec Connect
No in-app purchases
Questions
Is Fault Current Calculator (PFC) free?
Is Rolec Connect free?
Do Fault Current Calculator (PFC) or Rolec Connect have ads?
Which is updated more often, Fault Current Calculator (PFC) or Rolec Connect?
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