Description
TF140DU-142 Thermal Overload Relay
The TF140DU-142 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.
Setting Range: 110 … 142 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: 142 A
Rated Frequency: 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
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 0.9 cm; Main Circuit 2.5 cm
Recommended Screw Driver: Auxiliary Circuit Pozidriv 2; Main Circuit Hexagon 4
Mounting Position: any
Power Loss: at Rated Operating Conditions per Pole 2.3 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
Customs Tariff Code: 85364900
