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TF42-0.74 Thermal Overload Relay
Brand: ABB
Catalog Description: TF42-0.74 Thermal Overload Relay 0.55 … 0.74 A
Description: The TF42-0.74 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 10. Features include temperature compensation, trip contact (NC), signal contact (NO), automatic- or manual reset selectable, trip-free mechanism, STOP function and trip indication. It connects directly to block contactors. Single mounting kits available as accessory.
Setting Range: 0.55 … 0.74 A
Rated Operational Voltage: Auxiliary Circuit 600 V AC/DC; Main Circuit 690 V AC; Main Circuit 600 V DC
Rated Operational Current: 0.74 A
Rated Frequency: Auxiliary Circuit 50 Hz, 60 Hz and DC; Main Circuit 50 Hz, 60 Hz
Rated Impulse Withstand Voltage: Auxiliary Circuit 6 kV; Main Circuit 6 kV
Rated Insulation Voltage: 690 V
Number of Poles: 3
Auxiliary Contacts: NC = 1; NO = 1
Protected Poles: 3
Conventional Free-air Thermal Current (Ith): NC 6 A; NO 4 A
Rated Operational Current AC-15: (120 V) NC 3 A, NO 0.5 A; (240 V) NC 3 A, NO 0.5 A; (400 V) NC 0.75 A, NO 0.5 A; (500 V) NC 0.75 A, NO 0.5 A
Rated Operational Current DC-13: (125 V) NC 0.55 A, NO 0.55 A; (24 V) NC 1.25 A, NO 1.25 A; (250 V) NC 0.27 A, NO 0.27 A; (500 V) NC 0.15 A, NO 0.15 A; (60 V) NC 0.55 A, NO 0.55 A
Degree of Protection: IP20
Pollution Degree: 3
Connection Capacities: Auxiliary Circuit flexible with ferrule 1/2×0.75 … 2.5 mm², insulated ferrule 1×0.75 … 2.5 mm², insulated ferrule 2×0.75 … 1.5 mm², flexible 1/2×0.75 … 1 mm²; Main Circuit flexible with ferrule 1/2×0.75 … 4 mm², insulated ferrule 1/2×0.75 … 4 mm²
Tightening Torque: Auxiliary Circuit 1 … 1.2 N·m; Main Circuit 1.5 … 2.5 N·m
Wire Stripping Length: Auxiliary Circuit 0.9 cm; Main Circuit 1.2 cm
Recommended Screwdriver: Main Circuit Pozidriv 2
Power Loss: at Rated Operating Conditions per Pole 1.1 … 2.0 W
Suitable For: AF09, AF12, AF16, AF26, AF30, AF38
Standards: IEC/EN 60947-1; IEC/EN 60947-4-1; IEC/EN 60947-5-1; UL 60947-1; UL 60947-4-1; IEC 60335-2-40 A2L
Environmental Conditions: Operation Ambient Air Temperature -25 … +60 °C; Storage -50 … +80 °C; Altitude Limit 2000 m; Shock resistance 11 ms Pulse 25g; Vibration resistance 5g 3 … 150 Hz
RoHS Compliance: Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019
