Schneider Electric LR2 D3557 Overload Relay With Terminal Block

Schneider Electric TeSys D LR2D3557 overload relay delivers thermal protection for three‑phase motors in TeSys D installations, with a current rating range of 37 to 50 A and a Class 20 trip class for reliable startup protection and overload discrimination. This overload relay is designed to pair with TeSys D contactors to form a motor‑protective switchgear solution and is part of the LR2D family that covers motor‑protection functions in the 37–50 A range. The LA7D3064 terminal block adapter enables separate mounting of the relay (or mounting beneath compatible contactors) to fit compact control panels or DIN‑rail layouts. The LA7D3064 is described as a TeSys D terminal‑block adapter for relay mounting, including use with LR2D3 and LR3D3 variants, and can support configurations where space or layout requires independent placement from the main contactor. Typical applications include motor protection in machinery, conveyors, pumps, and fans, where reliable protection coordination with Schneider Electric TeSys equipment is required.