Single TF42-20 Thermal Overload Relay 16-20 A for 3-Phase Motors, IEC Motor Protection Device, Trip Class 10, Thermal Bi-Metallic Trip with Manual or Automatic Reset, DIN-mount for AF Contactors

Single TF42-20 thermal overload relay, 16-20 A
✔️ 3-phase IEC motor protection; Trip Class 10; selectable reset

This single thermal overload relay protects 3-phase motors in control panels and pairs with AF series contactors for reliable motor protection and overload tripping.

✅ Rating: 16-20 A adjustable range, ideal for motor protection
✅ Type: Thermal bi-metallic overload relay, IEC compliant
✅ Poles: 3-pole design for three-phase circuits
✅ Reset: Selectable manual or automatic reset options
✅ Mounting: DIN-rail compatible, fits AF9-AF38 frame contactors
✅ Pack: Single unit supplied for easy replacement and panel use

💡 How does a thermal overload relay protect a three-phase motor in IEC control systems? A motor protection relay senses overheating and persistent overcurrent and trips to prevent motor winding damage. - It uses a thermal bi-metallic element to emulate motor heating and trigger trips on prolonged overloads. - Trip Class 10 timing balances startup inrush tolerance with fast response to damaging conditions. - Designed to work with contactors and DIN-mounted motor control equipment for consistent IEC motor protection.