Thermal overload relay TeSys LRD 0.63-1A screw terminals LRD05

Overload relay – protection for motors and installations

The TeSys LRD05 thermal overload relay is a reliable device used to protect electric motors and circuits against the effects of overload, phase failure, prolonged starting, and other irregularities. Designed to work with TeSys Deca series contactors, it provides comprehensive protection in demanding industrial applications and electrical installations. Thanks to the precise current setting range (0.63…1 A), it allows adaptation to the specific needs of the protected circuit.

Construction and functionality

The LRD05 relay is characterized by a solid construction and easy mounting – directly on contactors or on a DIN rail (using an additional adapter). It has built-in auxiliary contacts (1NO + 1NC) that allow remote monitoring of the device status and signaling of failures. An automatic or manual reset function is available, increasing flexibility in system configuration. A transparent, sealable cover protects the current settings from accidental changes. It is also equipped with a test button to simulate the operation of the trip unit.

Applications and benefits

This model of relay is ideal for applications requiring high reliability and precision. It provides effective protection against overload, which translates into a longer lifespan of motors and minimizes the risk of costly downtime. Signaling of the trip status allows for a quick response in the event of a failure, and the ability to remotely reset facilitates system operation. A 10A release class guarantees the appropriate time-current characteristic for most industrial applications. Compliance with many standards (IEC, UL, CSA, CCC, EAC, ATEX, Marine) confirms its versatility and possibility of use in various environmental conditions. Built-in auxiliary contacts eliminate the need for additional signaling devices – saving space and installation costs.