الوصف
TF42-29 Thermal Overload Relay
The TF42-29 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 include 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 connect directly to the block contactors. Single mounting kits are available as accessory.
Electrical Characteristics: Setting range: 24 … 29 A, Rated operational current: 29 A, Rated operational voltage auxiliary circuit: 600 V AC/DC, main circuit AC: 690 V AC, main circuit DC: 600 V DC, Rated frequency auxiliary circuit: 50 Hz, 60 Hz, DC, main circuit: 50 Hz, 60 Hz. Rated impulse withstand voltage: 6 kV (auxiliary and main circuit), Rated insulation voltage: 690 V.
Mechanical and Physical Data: Number of poles: 3, Number of protected poles: 3, Degree of protection: IP20, Pollution degree: 3. Product net width: 4.5 cm, height: 8.83 cm, depth: 7.05 cm. Weight: 0.145 kg. Power loss per pole: 1.8 … 2.6 W.
Connection and Installation: Connecting capacity auxiliary circuit flexible with ferrule 0.75 … 2.5 mm², rigid 0.75 … 4 mm², main circuit flexible with ferrule 2.5 … 10 mm², rigid 1.5 … 10 mm². Wire stripping length auxiliary circuit: 9 mm, main circuit: 12 mm. Tightening torque auxiliary circuit: 1 … 1.2 N·m, main circuit: 2.5 … 2.7 N·m. Recommended screwdriver: Main Circuit Pozidriv 2.
Environmental and Compliance: Operation ambient temperature: -25 … +60 °C, compensated at -25 … +60 °C, storage: -50 … +80 °C. Maximum operating altitude: 2000 m. RoHS compliant following EU Directive 2011/65/EU and Amendment 2015/863. WEEE category: 5 Small Equipment (No External Dimension More Than 50 cm).
Standards and Certificates: IEC/EN 60947-1, 60947-4-1, 60947-5-1, UL 60947-1, 60947-4-1, IEC 60335-2-40 A2L and multiple international certificates including A2L IEC, ABS, ATEX, BV, CB, CCC, CQC, CE, UKCA, DNV GL, EAC, GL, IECEx, LR, RINA, RMRS, UL.















