TF42-35-Thermal overload relay 1SAZ721201R1053

Motor and installation protection – reliable thermal overload relay TF42-35

The TF42-35 thermal overload relay is a key element in protecting electric motors and installations against overload. The device, catalog number 1SAZ721201R1053, provides effective protection against damage resulting from excessive load, which translates to a longer lifespan of devices and minimized downtime. Thanks to the current setting range of 29-35A, this relay is ideal for use in various industries and construction.

Construction and functionality for professionals

The TF42-35 relay is characterized by direct mounting, which facilitates its integration with existing systems. It uses screw connections for the main contacts, ensuring secure and durable electrical connections. It has one normally open auxiliary contact, one normally closed contact, and one changeover contact, providing flexibility in configuring control circuits. A built-in reset button allows for quick resetting of the device after intervention, and the automatic reset function increases ease of use. Class 10 tripping ensures appropriate time-current characteristics, tailored to typical motor applications. The lack of a reset signal input simplifies the connection diagram.

Application and benefits in practice

The TF42-35 relay is widely used in protecting three-phase motors with power adapted to the current setting range. It is compatible with AF09 - AF38 series contactors, making it a universal solution for many installations. It provides not only protection against overload but also device status signaling via auxiliary contacts – which is particularly important in remote monitoring and control systems. The maximum rated operating voltage of 690V guarantees safety even in demanding industrial conditions. Thanks to its solid construction and high-quality workmanship, the TF42-35 relay is an investment in reliability and long-term protection of the electrical installation.