Disconnect Switch, Contactor, and Thermal Relay Course
This course equips you to handle disconnect switches, contactors, and thermal overload relays for safe three-phase motor control. You'll learn precise wiring, protection coordination, compliance with codes like IEC and NEC, and lockout/tagout protocols to confidently design, test, commission, and troubleshoot motor circuits in industrial settings.

from 4 to 360h flexible workload
certificate valid in your country
What will I learn?
Gain expertise in disconnect switches, contactors, and thermal overload relays through this practical course, progressing from three-phase basics to secure, standards-compliant motor starter setups. Master wiring methods, earthing, cable sizing, torque specs, protection selection, short-circuit and overload coordination, plus lockout/tagout and commissioning steps for dependable motor operation.
Elevify advantages
Develop skills
- Motor control wiring: assemble secure L1-L3 power and Start/Stop circuits efficiently.
- Disconnect and LOTO: choose, install, and apply lockout to motor isolators properly.
- Contactor and overload setup: select, connect, and align starters for optimal motor safeguarding.
- Standards-compliant design: implement IEC/NEC guidelines in three-phase motor systems.
- Commissioning and testing: check wiring, phase rotation, and safeguards prior to power-up.
Suggested summary
Before starting, you can change the chapters and the 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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Course in PDF