Max Zs Values - Google Play
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Publisher Description
BS 7671 maximum zs values for fuses MCB's RCBO's and MCCB's and more...
Max Zs values for Android, look up the maximum permitted Zs value (earth fault loop impedance) in accordance with BS 7671 amendment 4 2026.
Max Zs values include 100% (BS 7671) and 80% (On-site guide) temperature adjusted values.
Select from the list of protective devices (fuse's, MCB's, RCBO's) and device ratings to calculate the maximum permitted Zs value for your selected protective device.
Also look up some manufacture BS EN 60947-2 Zs value PDF charts and tables, all printable from within the Max Zs values app.
This Maximum Zs Values app contains Zs tables, charts and calculators all relating to the maximum permitted Zs values of BS 7671.
FEATURES:
- BS 7671 maximum Zs values
- Common BS EN MCB's, RCBO's and fuses maximum Zs calculator
- BS EN 60947-2 MCCB manufacture device charts / tables (some)
- RCD max Zs for TT earthing systems calculator
- DNO max Ze (by enquiry) values
- Uo 55v and 63.5v Zs values (110v single & three phase) calculator
- Ze + R1+R2 = Zs calculator
- Zs - Ze = R1+R2 calculator
- TN & TT maximum disconnection times chart
Pro Certs Software: Trusted by UK electricians since 2011.
About Max Zs Values
The company that develops Max Zs Values is Pro Certs Software Ltd. The latest version released by its developer is 1.0 .
To install Max Zs Values on your Android device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2026-07-28 and was downloaded 0 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the Max Zs Values as malware as malware if the download link to com.pro_certs.maxzs is broken.
How to install Max Zs Values on your Android device:
- Click on the Continue To App button on our website. This will redirect you to Google Play.
- Once the Max Zs Values is shown in the Google Play listing of your Android device, you can start its download and installation. Tap on the Install button located below the search bar and to the right of the app icon.
- A pop-up window with the permissions required by Max Zs Values will be shown. Click on Accept to continue the process.
- Max Zs Values will be downloaded onto your device, displaying a progress. Once the download completes, the installation will start and you'll get a notification after the installation is finished.
Program Details
System requirements
Download information
Pricing
Version History
version
posted on 2026-07-28
28/07/2026 v3.1.19
- Android 36 update
version 3.1.18
posted on 2025-07-28
28/07/2025 v3.1.18
- Android 35 update.
- UI improvements.
- Some optimisations.
version 3.1.17
posted on 2024-09-17
17/09/2024 - v3.1.17
- Android 14 update
version 3.1.16
posted on 2024-02-08
08/02/2024:
- Added Schneider TeSys MCCB max Zs table.
- New PDF viewer to fix the pinch/zoom/scroll bug when viewing PDF tables.
- A few UI improvements.
version 3.1.15
posted on 2024-02-01
Improved PDF handling for viewing MCCB Max Zs PDF tables.
version 3.1.14
posted on 2023-08-25
Added Terasaki TemBreak 2 Max Zs values table
version 3.1.12
posted on 2022-08-25
Some UI tweaks and optimisations.
version 3.1.10
posted on 2022-04-05
Minor bug fixes
version 3.1.9
posted on 2022-02-01
Bug fixes and updated app icon.
version 3.1.7
posted on 2021-08-18
Added some BS 3871 Type 4 Zs values.
Added a news feed from our blog.
Disclaimer
Official Google Play Link
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