TF42-0.55

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TF42-0.55 Thermal Overload Relay

The TF42-0.55 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 trip indication.

The overload relays are connected directly to block contactors. Single mounting kits are available as accessory.

Technical Data:

• Setting Range: 0.41 … 0.55 A
• Rated Operational Voltage: Auxiliary Circuit 600 V AC/DC; Main Circuit 690 V AC; Main Circuit 600 V DC
• Rated Operational Current (Ie): 0.55 A
• Rated Frequency: Auxiliary Circuit 50 Hz; Auxiliary Circuit 60 Hz; Auxiliary Circuit DC; Main Circuit 50 Hz; Main Circuit 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
• Number of Auxiliary Contacts NO: 1
• Number of Protected Poles: 3
• Conventional Free-air Thermal Current (Ith): Auxiliary Circuit NC 6 A; Auxiliary Circuit NO 4 A
• Rated Operational Current AC-15 (Ie): (120 V) NC 3 A; (120 V) NO 0.5 A; (240 V) NC 3 A; (240 V) NO 0.5 A; (400 V) NC 0.75 A; (400 V) NO 0.5 A; (500 V) NC 0.75 A; (500 V) NO 0.5 A
• Rated Operational Current DC-13 (Ie): (125 V) NC 0.55 A; (125 V) NO 0.55 A; (24 V) NC 1.25 A; (24 V) NO 1.25 A; (250 V) NC 0.27 A; (250 V) NO 0.27 A; (500 V) NC 0.15 A; (500 V) NO 0.15 A; (60 V) NC 0.55 A; (60 V) 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 0.75 … 4 mm²; Flexible with Insulated Ferrule 1/2x 0.75 … 4 mm²; Flexible 1/2x 0.75 … 4 mm²; Rigid 1/2x 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 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
• Customs Tariff Code: 85364900