AF-Line Thermal Overload Relay 3 Pole 4.2 - 5.7 Amp IEC NEMA Bi-Metallic Trip Class 10 For Motor Protection And Industrial Control Systems In Harsh Industrial Environments

AF-Line 3-Pole Thermal Overload Relay, single unit
✔️ 3-pole, thermal overload relay, 4.2-5.7 A, Class 10 trip

This AF-Line thermal overload relay provides motor protection in demanding industrial control systems. Designed to pair with AF-Series contactors (AF9-AF38 frames), it offers a selectable manual or automatic reset for easy startup control. Use in conveyors, pumps, fans, and other harsh-environment applications where reliable overload protection is critical.

✅ 3-pole overload relay with 4.20-5.70 A adjustable trip range
✅ Thermal bi-metallic element for Class 10 trip accuracy
✅ IEC and NEMA compatibility with AF-Series contactors
✅ Part number 804325558563; also known as TF42-5.7
✅ Manual or automatic reset option for controlled startups

💡 What is a thermal overload relay used for in motor control?

In plain terms, this device guards motors against overload and overheating in demanding industrial setups.

• It monitors current and ambient temperature and trips to protect windings and bearings.
• Designed to work with AF-Series contactors for cohesive motor protection in harsh environments.
• Class 10 trip and reset options support safe, reliable startup and operation.