Best Free Electrical Design Software

Designcenter Solid Edge is a Siemens product development portfolio that provides tools for mechanical design, electrical design, simulation, manufacturing, technical publications, data management, and collaboration. It combines the speed of direct modeling with the control of parametric design through synchronous technology. The software helps teams create 2D drawings, 3D models, electrical systems, simulations, manufacturing outputs, 3D printing workflows, and technical documentation. Designcenter Solid Edge is designed to be affordable, easy to learn, and scalable for different product development needs. It supports faster design changes, reuse of supplier CAD parts, realistic 3D modeling, and collaboration across engineering and manufacturing teams. With its complete portfolio of connected tools, Designcenter Solid Edge helps companies bring better products to market more efficiently.

Cableizer is a software package for the electrical, mechanical, and thermal design of cable systems. Cableizer is completely web-based: it's inexpensive, widely available, easily customizable, has improved interoperability, and is easier to install and maintain than a desktop application. Properties * Software-based design of cables up to 500 kV! * Cable calculations including mass, heat of combustion, CO2, price, etc. * Calculations of rated current and cable pulls * Environmental calculations including magnetic fields and increase in ground temperature * Web-based without installation or dongle, but with automatic updates * Collaborate with share links directly with customer

SkyCAD automates wire and component numbering, manages parts lists and BOMs, updates cross‑references, creates panel layout designs, and more. It features automated numbering, BOMs, and parts‑lists management, automated cross‑references, license sharing, and requires no training. With unique design‑reuse features such as design‑by‑systems and configuration management, the software ensures efficiency and consistency. It offers intuitive, user‑friendly tools for generating PLC and other component blocks automatically and can generate PLC drawings from an I/O list in Excel. The panel layout design is supported directly within the platform. SkyCAD supports European and American drawing styles. A rich tutorial library and responsive support forums empower users to get up to speed quickly. Standard (free) and advanced licenses are available, with the free license meeting the needs of many users and the advanced license providing additional features at a reasonable cost.

CableCalc BS7671 is advanced electrical calculation and design software aligned with the latest BS7671:2018+A2:2022 Requirements for Electrical Installations (IET Wiring Regulations 18th Edition Amendment 2) that helps professionals size cables, evaluate circuits, and design distribution board projects with precision. It supports both single- and three-phase calculations for radial, ring, and sub-main circuits, calculating voltage drop, disconnection time, fault current, earth fault information, overload, short-circuit parameters, and correction factors such as temperature and grouping. It offers comprehensive databases of copper cables and protective devices to streamline selection and includes tools to generate detailed calculation documents, schedules, single-line diagrams, and schematic drawings for jobs ranging from simple circuits to multi-distribution board projects.

To Navigate around in the schematic and layout of PCBWeb Designer you can use both the mouse and keyboard. To Zoom, use the scroll wheel or page-up and page-down keys to zoom into or out-of the active area in your design. If you want to reset your zoom level to fit your design, simply click on the icon in the lower right of the application or press your home key. Panning in PCBWeb designer is done by holding down the right-mouse button while moving your mouse. You can also use the standard scroll bars on the bottom and side of the application to pan the display area. PCBWeb Designer contains a fully integrated component catalog allowing you to easily search, filter and place parts that have both a symbol and footprint.

QElectroTech is a free, open source software designed for creating complex industrial electrical diagrams. It supports a wide range of diagram types, including electrical, plumbing, geothermal, air-conditioning, hydraulics, pneumatics, domotic, and photovoltaic systems, among others. With over 8,000 symbols available in the latest version, it allows users to create detailed technical diagrams across various fields. The software is licensed under the GNU/GPL license and is available for Windows, Mac OS, and Linux platforms. Its features include a flexible symbol library and user-friendly tools for creating professional-grade schematics. The software is supported by contributions from industrial companies and engineers, including Soliton Controles Industriais and C-Born Engineering, which assist in development and translation. Additionally, QElectroTech supports DXF export for easier integration with other software.