Description
TF42-4.2 Thermal Overload Relay
The TF42-4.2 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: Temperature compensation, trip contact (NC), signal contact (NO), automatic- or manual reset selectable, trip-free mechanism, STOP function and a trip indication. The overload relays are connected directly to the block contactors. Single mounting kits available as accessory.
Setting Range: 3.1 … 4.2 A
Rated Operational Voltage: Auxiliary Circuit 600 V AC/DC; Main Circuit 690 V AC; Main Circuit 600 V DC
Rated Operational Current (Ie): 4.2 A
Rated Frequency: Auxiliary Circuit 50 Hz, 60 Hz and DC; Main Circuit 50 Hz, 60 Hz
Rated Impulse Withstand Voltage (Uimp): Auxiliary Circuit 6 kV; Main Circuit 6 kV
Rated Insulation Voltage (Ui): 690 V
Number of Poles: 3
Number of Auxiliary Contacts: NC 1, NO 1
Conventional Free-air Thermal Current (Ith): Auxiliary Circuit NC 6 A, NO 4 A
Degree of Protection: IP20
Pollution Degree: 3
Connecting Capacity: Auxiliary Circuit flexible ferrule 0.75 … 2.5 mm², main circuit flexible ferrule 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 Screw Driver: Main Circuit Pozidriv 2
Power Loss: 1.1 … 2.0 W per pole at rated operating conditions
Suitable For: AF09, AF12, AF16, AF26, AF30, AF38
Standards: IEC/EN 60947-1, 60947-4-1, 60947-5-1; UL 60947-1, 60947-4-1; IEC 60335-2-40 A2L
Environmental Ratings: Operating temperature -25 … +60 °C (compensated), storage -50 … +80 °C, max altitude 2000 m
Weight and Dimensions: Width 4.5 cm; Height 8.83 cm; Depth 7.05 cm; Weight 0.13 kg
Customs Tariff Code: 85364900
