Motor control is a hands-on skill. You can read about contactors, overload relays, and seal-in circuits all day, but understanding comes from building the circuit yourself — connecting each wire, making mistakes, and tracing voltages to figure out what went wrong.
The problem is access. Not everyone has a training panel at their shop or trade school, and the ones that do exist are shared across shifts and class sections. Motor control simulators fill that gap: practice wiring whenever you have a browser open, make every mistake safely, and get immediate feedback on what works and what doesn't.
What a Good Simulator Needs
Most "motor control simulators" online are static animations or pre-wired ladder diagrams that play through a fixed sequence. They show you what happens, but you don't build anything. That's watching, not practicing.
A useful training simulator needs to let you:
- Wire from scratch — drag real wires between real terminal points on components that look like what you'd see in a panel
- Make mistakes safely — wrong wiring produces wrong behavior (a motor that won't start, a short circuit, an overload trip), not a "try again" message
- Measure voltages — use a multimeter to check potential between any two terminals, just like you would on a live panel
- Operate the circuit — press pushbuttons, toggle selector switches, trip and reset overload relays, and watch the circuit respond in real time
- Troubleshoot faults — diagnose injected faults (stuck contacts, open coils, tripped overloads) using systematic voltage checks
How Electrimancer Works
Electrimancer is a browser-based motor control circuit trainer. No software to install, no plugins, no downloads. Each trainer gives you a workbench with industrial components — contactors, overload relays, control stations, selector switches, transformers, and 3-phase motors — and a set of terminals to wire between.
Guided Lesson
Every trainer starts with an animated lesson that builds the circuit wire by wire. You watch current flow from the power supply through each component while narration explains what each wire does and why it goes where it does. The lesson covers the power circuit, the control circuit, seal-in logic, and protection devices.
Hands-On Wiring
After the lesson, you wire the circuit yourself on a blank workbench. Click a terminal to start a wire, click another terminal to finish it. Wires route through cable ducts automatically, just like they would in a real panel. A live ladder diagram updates as you wire, showing which connections are complete and which are missing.
Commissioning
Once your wiring is complete, you commission the circuit through a hands-on checklist: start the motor, verify it latches, verify the stop button works, trip and reset the overload. Each test confirms that a specific protection or control function works correctly.
Troubleshooting
After commissioning, the trainer injects faults into your circuit — a stuck-open contact, a broken wire, a tripped overload — and asks you to diagnose each one using the built-in digital multimeter. This is where the real learning happens: you're not following instructions anymore, you're reasoning about the circuit.
AI Mentor
An AI mentor is available throughout the wiring and troubleshooting phases. It knows the exact state of your circuit — which wires are connected, which terminals are energized, which contacts are open or closed — and gives targeted guidance without giving away the answer. If you wire something incorrectly, it asks you to think about what's missing rather than telling you where to put the wire.
Available Circuit Trainers
Electrimancer currently offers five trainers, progressing from fundamental to advanced:
Basic Motor Starter (Free)
The standard 3-wire start/stop motor control circuit. This is the foundation — every other trainer builds on the concepts introduced here. Includes five troubleshooting scenarios and covers both NEMA and IEC overload relay placement conventions. No account required.
Reading is one thing — wiring it yourself is another. Open the interactive trainer and build this circuit from scratch.
Start wiring — free, no account needed →Control Transformer Starter
A motor starter with a step-down control transformer that provides 24V control power separate from the 208V power circuit. Covers transformer primary/secondary wiring and control power fuse sizing per NEC 430.72(C). Introduces the concept of power and control circuit separation — standard practice when motor voltage is 480V or higher, and increasingly common at 208V.
Reading is one thing — wiring it yourself is another. Open the interactive trainer and build this circuit from scratch.
Try the control transformer trainer →Selector Switch Jog Circuit
A jogging circuit that uses a maintained selector switch to choose between continuous RUN and momentary JOG modes. When the selector is in JOG, the seal-in contact is mechanically disconnected — the motor runs only while the START button is held. Includes a pilot light exploration where you wire NO and NC auxiliary contacts for run/stop indication.
Reading is one thing — wiring it yourself is another. Open the interactive trainer and build this circuit from scratch.
Try the selector switch jog trainer →Control Relay Jog Circuit
An alternative jogging design that uses a DPDT control relay instead of a selector switch. The relay isolates the jog path from the seal-in path electrically rather than mechanically. This trainer covers relay logic, DPDT contact wiring, and alternative jog methods — including an exploration where you rewire the circuit for jog-only operation.
Reading is one thing — wiring it yourself is another. Open the interactive trainer and build this circuit from scratch.
Try the control relay jog trainer →Reversing Hoist Starter
A forward/reverse motor control circuit for a hoist, using two contactors with electrical interlocking to prevent simultaneous engagement. Covers phase swapping for motor reversal, interlock wiring, upper and lower limit switches, and a 24V control transformer. The most complex trainer — it brings together everything from the previous four.
Reading is one thing — wiring it yourself is another. Open the interactive trainer and build this circuit from scratch.
Try the reversing hoist trainer →Who It's For
These trainers are built for people who work with (or are learning to work with) industrial motor control:
- Electrician apprentices preparing for journeyman exams or shop panel work
- Trade school and community college students in electrical technology programs
- Industrial maintenance technicians brushing up on control circuit fundamentals
- Engineers who specify motor control but want to understand the field wiring
The circuits use standard NEMA-rated components (Size 1 contactors, thermal overload relays, 22mm pushbutton stations) at 208V 3-phase — the same hardware you'd find in a real industrial panel.
Getting Started
The basic motor starter trainer is free and requires no account. Open it in your browser, go through the animated lesson, then wire the circuit yourself. The entire sequence — lesson, wiring, commissioning, and first troubleshooting scenario — takes about 30 minutes.
Reading is one thing — wiring it yourself is another. Open the interactive trainer and build this circuit from scratch.
Start your first circuit — free →