Features

Everything you need to learn, build & simulate

A complete electrical circuit toolkit — all running locally in your browser, no server, no cloud, no account needed.

🔌

Drag & Drop Components

Place MCB breakers, switches, light bulbs, fans, motors and sockets from the palette. Components snap to a grid for clean, professional layouts.

⚡

Real-Time Simulation

Hit Run and watch electricity flow instantly. Energised wires animate, bulbs light up, fans spin. Toggle switches and see changes propagate live.

🔴

Fault Detection

The simulation engine detects open circuits, short circuits and overloads automatically. Faulty wires highlight in red for instant diagnosis.

🔀

Smart Wire Routing

Click a port to start wiring — ElectraSim auto-routes orthogonal wires around components. Custom multi-step wiring also supported.

📐

Multi-Select & Align

Shift-click or drag-select multiple components. Align left, center, right, top or bottom with one click for professional diagrams.

💾

Import, Export & Share

Save your circuit as JSON, export as SVG or PNG, or generate a shareable URL. Your work is autosaved locally and survives page reloads.

How it works

Up and running in 4 steps

No account, no download, no setup. Open ElectraSim and start building immediately.

1

Open the app

Click "Launch the Simulator". It loads instantly — works offline after the first visit.

2

Place components

Open the Components panel and click any component — MCB, switch, bulb, fan — to place it on the canvas.

3

Wire them up

Click a port dot on one component, then a port on another. ElectraSim routes the wire automatically.

4

Run & learn

Press Run to simulate. Toggle switches, add faults, and see exactly how your circuit behaves.

Who is it for?

Students, teachers, electricians & curious minds

ElectraSim is designed for anyone who wants to understand or teach how electrical circuits work.

🎓

Students

Learn electrical wiring concepts hands-on without real wire and voltage. Build and test circuits safely.

📚

Teachers

Create live circuit demonstrations in the classroom. Share circuits via URL for homework assignments.

🔧

Electricians

Prototype wiring layouts and validate circuit logic before installation on site.

🤓

Hobbyists

Experiment with circuit ideas, test different configurations, and learn by doing at your own pace.

From the Blog

Learn electrical wiring the easy way

Practical guides on circuits, wiring, and electrical safety — written for beginners and professionals alike.

Beginner Guide

How Household Wiring Works: A Complete Beginner's Guide

From the main panel to your light switch — understand how electricity flows through a home and why each component matters.

Read article →
Coming Soon

Series vs Parallel Circuits: What's the Difference?

A visual explanation of series and parallel wiring with interactive examples you can try in ElectraSim.

Coming Soon

What is an MCB Breaker and How Does It Protect Your Circuit?

MCBs are the first line of defence against overloads and short circuits. Here's how they actually work.

Ready to build your first circuit?

No installation. No sign-up. Just open ElectraSim and start wiring in seconds.

⚡ Launch ElectraSim Free