🔍 Key Concepts

• Figure A shows a three‑phase magnetic/manual motor starter with separate Start/Stop pushbuttons and overload (OL) contacts in all three lines feeding a motor. • Compare how each device (1–4) is operated: by remote pushbuttons/coil vs. by a built‑in toggle or rotary handle directly switching the motor lines. • Look for devices that provide L1–L3 line terminals and T1–T3 load terminals plus overload protection, matching the wiring diagram.

💭 Think About

• In figure A, does the motor’s current pass directly through the front‑panel operator (Start/Stop), or do those buttons just control a contactor coil inside the starter? Which pictured device matches that style of control? • Which of the four devices clearly shows both line and load terminals (L1–L3 and T1–T3) and an overload adjustment, indicating it is a combination starter with OLs similar to those drawn? • For each option, ask yourself: if I wired it exactly as in A, where would I physically land L1–L3, T1–T3, and the Start/Stop control circuit on this device?

✅ Before You Answer

• Verify which illustration shows separate control (pushbutton/coil) terminals in addition to main power terminals, consistent with the Start/Stop circuit in A. • Confirm that the chosen device has three overload elements or an adjustable overload unit matching the three OL symbols in A. • Make sure the device you pick can be wired with remote Start and Stop pushbuttons, not just an on‑off handle on the front.