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About

Relay Tripping Curves PRO2 (RTC2) is Windows desktop software built by protection engineers, for protection engineers. It plots trip curves for relays, circuit breakers, and transformers on a log-log plot, verifies selectivity between devices, and generates the complete technical report that real engineering work demands. Field test sets measure, but they don't relate the reading back to the primary system, plot the curve, or leave evidence that a setting actually coordinates. RTC2 solves that. Features: 7 relay brands, each mirroring the manufacturer's real display and native nomenclature, 10 circuit breaker trip units with L/S/I/G zones, Transformer damage curve per ANSI/IEEE C57.109-2018, inrush and short-circuit current, ΔT selectivity calculation between devices, PDF reports with primary-equivalent current, curve equation, plot, and signatures, Fully bilingual (English/Spanish), 100% offline Free DEMO with no time limit. Paid editions (perpetual license, one-time payment)

About

ZapSketch is a browser-based electrical home-run planning tool for electricians, electrical contractors, and estimators. Users can import a floor-plan PDF, sketch walls on a blank sheet, or work from a quick drawing, then place panels, junction boxes, and devices and route circuits and raceways. The application measures run lengths and provides preliminary conductor-sizing, ampacity, voltage-drop, and conduit-fill feedback as the layout changes, using documented NEC 2023 calculation assumptions. Users can review circuit schedules and export marked-up plan PDFs and raceway pull schedules for estimating, review, and field handoff; some export details and unwatermarked reports require Pro. Free standalone voltage-drop, wire-size, and conduit-fill calculators are also available. ZapSketch is a preliminary planning aid, not a replacement for adopted-code review, engineering judgment, or verification of project conditions.

Platforms Supported

Windows Supported
Mac Not Supported
Linux Not Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Protection and commissioning test engineers, project and plant engineers verifying feeder coordination, maintenance technicians working with relays and trip units, and protection engineering instructors and students.

Audience

Electricians, from apprentices to foremen, working on residential and commercial electrical planning and estimating.

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

No images available

Pricing

Free demo
Free Version Supported
Free Trial Not Supported

Pricing

$19/month
Free includes the planning workflow and preliminary checks; PDF exports are watermarked and redact commercial pull and calculation details. Pro is $19 per month, or $190 per year, and adds unwatermarked PDF exports, full raceway pull schedules, complete preliminary calculation reports, and commercial-use output. Standalone voltage-drop, conduit-fill, and wire-size calculators are available without signup.
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

PROTELECTSA
Founded: 2024
Panama
www.protelectsa.net

Company Information

ZapSketch
Founded: 2025
Canada
zapsketch.com

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Electrical Resources

Categories

Electrical Design Supported

Categories

Electrical Design Supported

Electrical Design Features

CAD Tools Not Supported
Change Management Not Supported
Collaboration Not Supported
Compliance Management Not Supported
Document Generation Not Supported
Drag & Drop Not Supported
Electrical Parts Catalog Not Supported
Functions / Calculations Supported
One Line Diagram Not Supported
PLC Tools Not Supported
Reusable Designs Not Supported
Symbol Library Not Supported

Integrations

No info available.

Integrations

No info available.
Claim Relay Tripping Curves PRO2 and update features and information
Claim Relay Tripping Curves PRO2 and update features and information
Claim ZapSketch and update features and information
Claim ZapSketch and update features and information