Relay Logic Simulator =link= -
One of the biggest advantages of using a relay logic simulator is safety. Working with live industrial electricity—often 120V or 240V AC—carries significant risks of shock or arc flash. A simulator provides a "sandbox" where you can make mistakes, create short circuits, or miswire a latching circuit without any real-world consequences. This makes it an ideal environment for learning the fundamentals of Boolean logic, such as AND, OR, and NOT gates, which form the building blocks of all automated sequences.
Modern relay logic simulators, ranging from free web applets to professional desktop software, offer a robust set of features: relay logic simulator