ABB TF42 Thermal Overload Relay 1NO + 1NC, 16 → 20 A F.L.C, 20 A Contact Rating, 2.6 W, 3P, AF Range

The ABB thermal overload relay is a crucial electromechanical protection device designed for the main circuit to safeguard motors against overload and phase failures. This highly reliable relay is an essential component in starter combinations used alongside contactors. With a trip class of 10 and phase loss sensitivity, this relay offers effective protection for motors in a wide range of industrial applications.

• Overload protection with a trip class of 10 for optimal motor safety
• Phase loss sensitivity to detect and address phase failures promptly
• Temperature compensation ranging from -25°C to +60°C for reliable performance in varied environments
• Adjustable current setting for personalised overload protection as per motor requirements
• Automatic or manual reset options for added flexibility and convenience
• Trip-free mechanism for ensuring the device operates seamlessly in critical situations
• Status indication feature provides clear visibility on the operational state of the relay
• Direct mounting onto block contactors for easy installation and integration
• Sealable operating elements for enhanced security and protection against tampering

• Ideal for motor overload protection in industrial automation systems.
• Used in mechanical equipment to prevent damage due to overload conditions.
• Commonly integrated into electrical panels for comprehensive motor protection.
• Suitable for both indoor and outdoor applications in various industrial settings.
• Designed for use with AF Range contactors to ensure seamless operation.

This a thermal overload relay. It’s an economic electromechanical protection device for the main circuit. It offers reliable and fast protection for motors in the event of overload or phase failure.

This relay has trip class 10, temperature compensation, trip contact (NC), signal contact (NO), automatic- or manual reset selectable, trip-free mechanism, STOP function, and a trip indication

The setting range is 16 to 20 A.