Description
TF42-38 Thermal Overload Relay 35 … 38 A
The TF42-38 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. Further features are the 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 are available as accessory.
Setting Range: 35 … 38 A
Rated Operational Voltage: Auxiliary Circuit 600 V AC/DC, Main Circuit 690 V AC, Main Circuit 600 V DC
Rated Operational Current (Ie): 38 A
Rated Frequency (f): 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
Auxiliary Contacts – NC: 1
Auxiliary Contacts – NO: 1
Number of Protected Poles: 3
Conventional Free-air Thermal Current: Auxiliary Circuit NC 6 A, Auxiliary Circuit NO 4 A
Rated Operational Current AC-15 (Ie): (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 (Ie): (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
Connecting Capacity Auxiliary Circuit: Flexible with Ferrule 1/2x 0.75 … 2.5 mm², Flexible with Insulated Ferrule 1x 0.75 … 2.5 mm², Flexible with Insulated Ferrule 2x 0.75 … 1.5 mm², Flexible 1/2x 0.75 … 1 mm², Flexible 1/2x 1 … 2.5 mm², Rigid 1/2x 0.75 … 4 mm²
Connecting Capacity Main Circuit: Flexible with Ferrule 1/2x 2.5 … 10 mm², Flexible with Ferrule 1/2x 1.5 … 2.5 mm², Flexible with Insulated Ferrule 1/2x 1.5 … 6 mm², Flexible 1/2x 2.5 … 4 mm², Flexible 1/2x 4 … 6 mm², Rigid 1/2x 1.5 … 2.5 mm², Rigid 1/2x 2.5 … 10 mm²
Tightening Torque: Auxiliary Circuit 1 … 1.2 N·m, Main Circuit 2.5 … 2.7 N·m
Wire Stripping Length: Auxiliary Circuit 9 mm, Main Circuit 12 mm
Recommended Screw Driver: Main Circuit Pozidriv 2
Power Loss: 2.1 … 2.8 W per pole
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
Dimensions (W x H x D): 4.5 cm x 8.83 cm x 7.05 cm
Weight: 0.145 kg
Environmental Information: Operation temperature from -25 to +60 °C, Storage temperature from -50 to +80 °C, Ambient air temperature compensation yes, Maximum operating altitude 2000 m, Resistance to shock 11 ms pulse 25g, Resistance to vibrations 5g 3 … 150 Hz, RoHS compliant according to EU Directive 2011/65/EU and Amendment 2015/863.
