ABB TF42 Thermal Overload Relay 1NO + 1NC, 5.7 → 7.6 A F.L.C, 7.6 A Contact Rating, 2 W, 3P, AF Range

Beef up security around your industrial equipment with this NO/NC thermal overload relay from ABB. To protect your sensitive devices, it cuts the power to an attached circuit in the event of a system surge. It's a breeze to restart the unit after a trip, thanks to the easy-to-access reset button. Attach it to an AF-series contactor (such as 711-6121) in a single or 3-phase motor.

• Wide -25°C to +60°C operating temperature range suits installation in demanding settings
• Screw terminals simplify wiring and installation
• Adjustable contact current rating between 5.7 and 7.6A for versatility

• Factory automation
• Manufacturing industry
• Power generation equipment

When electricity flows through this unit, it heats a bimetal tripping element. If things get too hot, which happens when there's an overload, the internal components bend and open the circuit, turning your equipment off in the process.

A thermal overload relay doesn't need much maintenance due to its robust design. You should check and test it from time to time to make sure it's working properly and to catch any potential issues early on.