TeSys LRD thermal overload relays, 12…18A, class 10A. range: TeSys – product name: TeSys LRD – product or component type: differential thermal overload relay – device short name: LRD – relay application: motor protection – product compatibility: LC1D40A, LC1D50A, LC1D65A – network type: AC, DC – [Ui] rated insulation voltage: 600 V power circuit conforming to CSA, 600 V power circuit conforming to UL, 690 V power circuit conforming to IEC 60947-4-1.