The TF140DU-110 thermal overload relay is an economic electromechanical protection device for the main circuit. It offers reliable and fast protection for motors in the event of overload or phase failure. The device has trip class 10A. Further features are the temperature compensation, trip contact (NC), signal contact (NO), automatic- or manual reset selectable, trip-free mechanism, STOP- and Test function and a trip indication. The overload relays are connected directly to the block contactors. Technical Setting Range: 80 ... 110 A Rated Operational Voltage: Auxiliary Circuit 440 V DC Auxiliary Circuit 500 V AC Main Circuit 690 V AC Main Circuit 440 V DC Rated Operational Current (Ie): 110 A Rated Frequency (f): Auxiliary Circuit 50 Hz Auxiliary Circuit 60 Hz Auxiliary Circuit DC Main Circuit 60 Hz Main Circuit 50 Hz Main Circuit DC Rated Impulse Withstand Voltage (Uimp): Auxiliary Circuit 6 kV Main Circuit 8 kV Rated Insulation Voltage (Ui): 690 V Number of Poles: 3 Number of Auxiliary Contacts NC: 1 Number of Auxiliary Contacts NO: 1 Number of Protected Poles: 3 Conventional Free-air Thermal Current (Ith): Auxiliary Circuit NC 10 A Auxiliary Circuit NO 6 A Rated Operational Current AC-15 (Ie): (120 V) NC 3 A (120 V) NO 1.5 A (240 V) NC 3 A (240 V) NO 1.2 A (400 V) NC 0.75 A (400 V) NO 0.37 A (440 V) NC 0.75 A (440 V) NO 0.37 A (500 V) NC 0.3 A (500 V) NO 0.25 A Rated Operational Current DC-13 (Ie): (125 V) NC 0.25 A (125 V) NO 0.25 A (24 V) NC 1.25 A (24 V) NO 1.25 A (250 V) NC 0.12 A (250 V) NO 0.04 A (60 V) NC 0.25 A (60 V) NO 0.25 A Degree of Protection: IP20 Housing IP20 Main Circuit Terminals IP10 Pollution Degree: 3 Connecting Capacity Auxiliary Circuit: Flexible with Ferrule 1/2x 0.75 ... 2.5 mm² Flexible 1/2x 0.75 ... 2.5 mm² Rigid 1/2x 0.75 ... 4 mm² Connecting Capacity Main Circuit: Flexible with Ferrule 1/2x 16 ... 70 mm² Flexible with Insulated Ferrule 1/2x 16 ... 70 mm² Flexible 1/2x 16 ... 70 mm² Rigid 1/2x 16 ... 70 mm² Tightening Torque: Auxiliary Circuit 0.8 ... 1.2 N·m Main Circuit 8 ... 10 N·m Wire Stripping Length: Auxiliary Circuit 9 mm Main Circuit 25 mm Recommended Screw Driver: Auxiliary Circuit Pozidriv 2 Main Circuit Hexagon 4 Mounting Position: any Power Loss: at Rated Operating Conditions per Pole 2.1 W Suitable For: AF116 AF140 Standards: IEC/EN 60947-1 IEC/EN 60947-4-1 IEC/EN 60947-5-1 UL 60947-1 UL 60947-4-1