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TeSys LR9 – LR9D / LR9D

Electronic Thermal Overload Relays up to 315 kW

Advanced, flexible and reliable protection for electrical motors from 18.5 to 315 kW

Thermal Overload Relays
  • Features

    New TeSys LR9D electronic overload relays provide advanced, flexible and reliable protection for electrical motors. Adaptable to diverse needs they can fit a wide range of applications.

    By incorporating multiple functionalities in a single space saving design, the new relays simplify control architecture as well as selection of motor protection devices.

    We rely on electric motors to ensure the continuity of key processes. Choosing the right motor protection device therefore affects not only the infrastructure but also the overall business performance.


    LR9D electronic thermal overload relay includes the following features:
    • Selectable trip class ( 5,10,20,30 ) - makes this range suitable for the majority of applications
    • 5:1 adjustment range - makes new relays suitable for wide range of applications up to 110A
    • Compact size - saves space in control panels
    • Self-Powered - no need for an external power supply
    • Ambient insensitivity - allows accurate current measurement
    • Flexible installation ( close- couple up to 32 A or stand-alone up to 110A )


    Suitable for industrial, food & beverage, machine manufacturing and most other applications.


    • LR9-F: version from 18.5 to 315 kW. It is mounted directly below TeSys F contactors
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