TeSys LRD thermal overload relay, 104A/1000V, thermal setting range 80-104A, tripping class 10A, for protection of 3-phase motors 45kW@400V. Differential device with phase failure and load unbalance detection. It provides a thermal adjustement dial, a manual-automatic reset selector acting also as reset button, a trip test button for simulation of a tripping, a stop button, a flag indicator and 2 auxiliary contacts 1NO+1NC for fault signalling. Settings are protected by a transparent cover lockable by sealing. Connection by screw clamp terminals, it connects directly to the bottom terminals of 3-pole contactors LC1D80-D95. Mounting on DIN rail or screw fixing, separated from the contactor, with use of a terminal block LA7D3064 (to be ordered separately). Multi standards certified (IEC, UL, CSA, CCC, EAC, ATEX, Marine), Green Premium compliant (RoHs/Reach). Specifications Main Range TeSys Product name TeSys LRD TeSys Deca Product or component type Differential thermal overload relay Device short name LRD Relay application Motor protection Product compatibility LC1D95 LC1D80 Network type AC DC Thermal overload class Class 10A IEC 60947-4-1 Thermal protection adjustment range 80…104 A [Ui] rated insulation voltage Power circuit 1000 V IEC 60947-4-1 Power circuit 600 V CSA Power circuit 600 V UL Complementary Network frequency 0...400 Hz Mounting support Plate, with specific accessories Rail, with specific accessories Under contactor Tripping threshold 1.14 +/- 0.06 Ir IEC 60947-4-1 Auxiliary contact composition 1 NO + 1 NC [Ith] conventional free air thermal current 5 A signalling circuit Permissible current 0.72 A 500 V AC-15 signalling circuit 0.06 A 440 V DC-13 signalling circuit [Ue] rated operational voltage 1000 V AC 0...400 Hz power circuit IEC 60947-4-1 Associated fuse rating 4 A gG signalling circuit 4 A BS signalling circuit [Uimp] rated impulse withstand voltage 6 kV IEC 60947-1 Phase failure sensitivity Tripping current 130 % of Ir on two phase, the last one at 0 Control type Red push-button stop Blue push-button reset Temperature compensation -4…140 °F (-20…60 °C) Connections - terminals Power circuit screw clamp terminals 1 0.01…0.05 in² (4…35 mm²) flexible without cable end Power circuit screw clamp terminals 1 0.01…0.05 in² (4…35 mm²) flexible with cable end Power circuit screw clamp terminals 1 0.01…0.05 in² (4…35 mm²) solid without cable end Control circuit screw clamp terminals 2 0.00…0.00 in² (1…2.5 mm²) flexible without cable end Control circuit screw clamp terminals 2 0.00…0.00 in² (1…2.5 mm²) flexible with cable end Control circuit screw clamp terminals 2 0.00…0.00 in² (1…2.5 mm²) solid without cable end Tightening torque Control circuit 15.05 lbf.in (1.7 N.m) screw clamp terminals Power circuit 79.66 lbf.in (9 N.m) screw clamp terminals Height 3.19 in (81 mm) Width 2.76 in (70 mm) Depth 4.53 in (115 mm) Net weight 1.12 lb(US) (0.51 kg) Environment Climatic withstand IACS E10 IP degree of protection IP20 IEC 60529 Ambient air temperature for operation -4…140 °F (-20…60 °C) without derating IEC 60947-4-1 Ambient air temperature for storage -76…158 °F (-60…70 °C) Flame retardance V1 UL 94 Mechanical robustness Vibrations6 Gn IEC 60068-2-6 Shocks15 Gn for 11 ms IEC 60068-2-7 Dielectric strength 2.2 kV 50 Hz IEC 60947-1 Standards EN/IEC 60947-4-1 EN/IEC 60947-5-1 UL 60947-4-1 UL 60947-5-1 CSA C22.2 No 60947-4-1 CSA C22.2 No 60947-5-1 GB/T 14048.4 GB/T 14048.5 EN 50495 Product certifications IEC UL CSA CCC EAC ATEX INERIS UKCA