Uploaded May 2026 | Updated September 2026, 2 weeks ago
Ever wonder why you can't directly switch a big 10 HP motor or HVAC compressor with your PLC? That's where contactors come in — the heavy-duty heroes of industrial automation!
In this video, we break down:
• What a contactor actually is and how it differs from a regular relay
• The key components: coil, armature, and power contacts
• How contactors safely handle high inrush currents, inductive loads, voltage spikes, and arc management
• Why they're essential for motor starters, HVAC systems, heating circuits, lighting banks, and automated machinery
• Load ratings explained (AC-1 for resistive vs. AC-3/AC-4 for inductive/motor loads)
• Real-world applications in harsh industrial environments
Whether you're starting large motors, controlling transformers, or building reliable control panels, contactors provide the safe, repeatable isolation between low-voltage controls (like 24 VDC from a PLC) and high-power three-phase circuits.
***This video is for educational purposes only. Always follow your company's safety procedures and all applicable local codes and regulations. AutomationDirect is not liable for any misuse of this information.
To learn more: AutomationDirect.com/contactors?utm_source=zPQDp2R1yUc&utm_medium=VideoTeamDescription - (VID-MS-0044)
Learn more about contactors or shop reliable, value-priced options today at AutomationDirect.com — the #1 value in automation
#Contactors #IndustrialAutomation #MotorControl #PLC #HVAC #ElectricalEngineering #AutomationDirect
Online Support Page: community.automationdirect.com/s/?utm_source=zPQDp2R1yUc&utm_medium=VideoTeamDescription
**Please check our website for our most up-to-date product pricing and availability.
Related AutomationDirect.com part numbers: *MTRCONTCTR
Ever wonder why you can't directly switch a big 10 HP motor or HVAC compressor with your PLC? That's where contactors come in — the heavy-duty heroes of industrial automation!
In this video, we break down:
• What a contactor actually is and how it differs from a regular relay
• The key components: coil, armature, and power contacts
• How contactors safely handle high inrush currents, inductive loads, voltage spikes, and arc management
• Why they're essential for motor starters, HVAC systems, heating circuits, lighting banks, and automated machinery
• Load ratings explained (AC-1 for resistive vs. AC-3/AC-4 for inductive/motor loads)
• Real-world applications in harsh industrial environments
Whether you're starting large motors, controlling transformers, or building reliable control panels, contactors provide the safe, repeatable isolation between low-voltage controls (like 24 VDC from a PLC) and high-power three-phase circuits.
***This video is for educational purposes only. Always follow your company's safety procedures and all applicable local codes and regulations. AutomationDirect is not liable for any misuse of this information.
To learn more: AutomationDirect.com/contactors?utm_source=zPQDp2R1yUc&utm_medium=VideoTeamDescription - (VID-MS-0044)
Learn more about contactors or shop reliable, value-priced options today at AutomationDirect.com — the #1 value in automation
#Contactors #IndustrialAutomation #MotorControl #PLC #HVAC #ElectricalEngineering #AutomationDirect
Online Support Page: community.automationdirect.com/s/?utm_source=zPQDp2R1yUc&utm_medium=VideoTeamDescription
**Please check our website for our most up-to-date product pricing and availability.
Related AutomationDirect.com part numbers: *MTRCONTCTR
