Disconnect Switch, Contactor, and Thermal Relay Course
This course teaches you to handle disconnect switches, contactors, and thermal relays for secure three-phase motor control. You will learn wiring techniques, protection configurations, code requirements, and lockout/tagout methods to confidently design, test, commission, and service motor circuits without issues.

from 4 to 360h flexible workload
valid certificate in your country
What will I learn?
Gain expertise in disconnect switches, contactors, and thermal overload relays through this practical course. It covers three-phase basics, proper wiring, earthing, conductor sizing, torque specs, standards compliance, protection device selection, short-circuit and overload coordination, plus lockout/tagout and commissioning steps for safe motor starters.
Elevify advantages
Develop skills
- Motor control wiring: assemble secure L1-L3 power and Start/Stop circuits efficiently.
- Disconnect and LOTO: choose, install, and lock out motor isolators properly.
- Contactor and overload setup: select, connect, and align starters for motor safeguarding.
- Standards-based design: implement IEC/NEC guidelines in three-phase motor setups.
- Commissioning and testing: check wiring, rotation, and safeguards prior to power-up.
Suggested summary
Before starting, you can change the chapters and workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workload.What our students say
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