A load runs only when current completes a full loop at the right voltage. Conductors are color-coded by leg.
Power & Loads
Control & Switches
DC/AC Volts
---V
click two points
Conductor Colors
L1 / L — black (≤240V)
L2 — red (≤240V)
L3 — blue (208V 3φ)
Neutral — white (≤240V)
L1 — brown (277/480V)
L2 — orange (277/480V)
L3 — yellow (277/480V)
Neutral — gray (277/480V)
Quick Guide
Contactor 3 poles L1/L2/L3 → T1/T2/T3. Give it a letter; a Coil with the same letter closes it.
Push Buttons Hold to press, release to spring back.
Contacts Click the contact to assign which coil letter it follows. Shift-click to manually toggle it for testing.
🔧 Troubleshoot Builds a hidden fault into your circuit (open wire, stuck/welded contact, open coil, or blown overload). Energize, then hunt it down.
🔌 Meter Click Meter, then click two terminals to read the voltage between them. Half-split the circuit to find the dead section. Reading full voltage across a point = open there.
Repair When you find the fault, click the bad wire or device to fix it. The circuit comes back to life when you nail it.
Transformer Primary H1/H2, secondary X1/X2. Energize the primary and the secondary powers your control circuit at the stepped-down voltage. Click to change ratio (e.g. 480→120).
Selector (H-O-A) Click to cycle Hand / Off / Auto. HAND=COM→T1, AUTO=COM→T2.
⏱ Timer Click the timer — it walks you through 3 questions: 1) type (1=ON-delay waits then turns on, 2=OFF-delay turns on now then waits to turn off), 2) how many seconds, 3) a letter. Contacts with that letter follow it. Wire power to A1/A2 to trigger it; energize and watch it count down.
🔢 Counter Click to set the count target and a letter. Pulse its A1/A2 input to count up (once per pulse); at the target, its letter energizes. Wire power to RST to reset the count.
Overload Relay Passes motor power; its NC aux (AUX1-AUX2) sits in the control circuit. Click to trip/reset — tripping opens the aux and drops the coil.
Pilot Light Lights when its circuit completes. Click to change color (green/red/amber).
Wires Drag the round handle on a wire to route it manually. Click the wire body to delete.
Add a Power Source, then loads and switches. Complete the loop to run a load.
Click a device body to configure. Click a terminal then another to wire. Drag a wire's handle to route it; click the wire to delete. Then Energize.