Full Motor Starter

A real starter: start/stop/seal-in control with an overload relay in the control rung, plus a contactor feeding the motor — control and power circuits together.

What you’re building

Steps

1. Add the parts

   Click Power Source, Push Button NC (Stop), Push Button NO (Start), Overload Relay, Coil, NO Contact (seal-in), Contactor (3-pole), and Motor.

2. Label coil, seal-in, contactor

   Coil = M; the NO Contact = M (seal-in); Contactor = M.

3. Build the control rung with the overload

   To wire, click the first terminal (it highlights), then click the second to connect them. Run Stop and Start to the coil, then the overload’s NC aux contact on the far side of the coil (between Coil A2 and the L2/N return). The overload’s aux is its small control contact, not the big heaters.

   Power Source L1 → Stop (left)

   Stop (right) → Start (left)

   Start (right) → Coil A1

   Coil A2 → Overload NC aux (left)

   Overload NC aux (right) → Power Source N

4. Add the seal-in around Start

   Bridge the M NO Contact across the Start button (parallel), exactly like the three-wire circuit.

   Stop→Start wire → M NO Contact (one side)

   M NO Contact (other side) → Start→Coil wire

5. Wire the motor power

   Run power through the contactor (and through the overload heaters if you want full realism) to the motor.

   Power Source L1 → Contactor T1 in

   Contactor T1 out → Motor

   Motor → Power Source N

6. Energize, start, then trip the overload

   Click Energize, tap Start (it seals in and runs). Now click the Overload Relay to TRIP it — its NC aux opens, the coil drops, the motor stops. Click the overload again to reset, then Start once more.

7. The point

   The overload doesn’t switch the big motor power directly — it stops the motor by breaking the control circuit and dropping the coil.