Schneider Electric LR3D3555

The thermal overload relay LR3D3555 is designed for integration with TeSys D contactors, providing essential protection for motors, particularly under unbalanced load conditions. With a thermal setting range of 30-40A, it effectively safeguards motors rated at 18.5kW at 400V.

This device features manual test and reset buttons, an automatic reset function, and a trip auxiliary contact alongside a flag indicator for clear operational status. Its compact dimensions (75mm width and 121mm depth) facilitate direct mounting on the bottom terminals of TeSys contactors such as LC1D80 and LC1D95, forming a streamlined starter solution.

Constructed for durability, the relay is temperature compensated to ensure accurate protection performance within an ambient temperature range of -20 to 60 °C. It is compliant with multiple international standards including IEC, UL, and CSA, indicating its versatility for various applications. The relay also accommodates a variety of terminal connections and allows for the addition of separate mounting terminal blocks and remote control devices.

Furthermore, it is classified under the Green Premium product range, ensuring it meets environmental sustainability standards as it is free from substances of very high concern and complies with RoHS regulations.