TF42-7.6 Thermal overload relay 1SAZ721201R1040

Motor protection with thermal overload relay TF42-7.6

The TF42-7.6 thermal overload relay from ABB is a reliable device used to protect electric motors from overload. Designed to work with AF09 - AF38 series contactors, it provides effective and precise protection in a wide range of industrial and commercial applications. Its main task is to monitor the current flowing through the motor and trigger in case of exceeding the permissible value, preventing damage and downtime.

Functionality and application

The TF42-7.6 relay is an integral part of motor starting systems, ensuring their safe and long-lasting operation. Thanks to the current setting range from 5.7 to 7.6 A, it perfectly adapts to the needs of various loads and motor types. The possibility of manual reset (reset button) and automatic reset after cooling, facilitates operation and minimizes downtime. It has one normally open auxiliary contact, one normally closed and one changeover contact, allowing integration with control and signaling systems. Direct mounting simplifies installation and saves space in control cabinets.

Construction and characteristic features

The device is characterized by a solid construction and high quality workmanship, which guarantees reliability in harsh industrial conditions. Release class 10 provides adequate selectivity in protection systems. The relay has been designed with easy installation and maintenance in mind – screw connection of the main contacts ensures secure and durable electrical connections. Compliance with EN 1449 part 1.15 class CS70 confirms its suitability for applications both indoors and outdoors and in corrosive environments.