Description
TF42-3.1 Thermal Overload Relay
The TF42-3.1 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 the block contactors. Single mounting kits are available as accessory.
Electrical Ratings and Characteristics:
Setting range: 2.3 … 3.1 A
Rated operational voltage: Auxiliary circuit 600 V AC/DC, Main circuit 690 V AC / 600 V DC
Rated operational current (Ie): 3.1 A
Rated frequency: Auxiliary circuit 50 Hz, 60 Hz, DC; Main circuit 50 Hz, 60 Hz
Rated impulse withstand voltage: 6 kV
Rated insulation voltage: 690 V
Number of poles: 3
Auxiliary contacts NC: 1, NO: 1
Conventional free-air thermal current: 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 1/2x 0.75 … 2.5 mm², insulated ferrule options, rigid and flexible wire; Main circuit: Flexible with ferrule 1/2x 0.75 … 4 mm², rigid and flexible wire
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 per pole at rated operating conditions: 1.1 … 2.0 W
Suitable for AF09, AF12, AF16, AF26, AF30, AF38
Standards and Certifications: 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
Maximum operating voltage UL/CSA main circuit: 600 V AC
Contact rating UL/CSA: (NC) B600, Q600; (NO) Q600, D300
WEEE Category: 5. Small Equipment (No External Dimension More Than 50 cm)
Package Level 1: carton 1 piece, dimensions 4.8 cm width x 9.2 cm height x 7.8 cm depth, gross weight 0.145 kg
Package Level 2: carton 40 pieces, dimensions 28.0 cm width x 21.0 cm height x 39.5 cm depth, gross weight 7.346 kg
