ABB TF42-7.6 1SAZ721201R1040 Thermal overload relay

Product Information: ABB TF42-7.6 1SAZ721201R1040 Thermal Overload Relay

Detailed Specifications:

• Model: TF42-7.6 1SAZ721201R1040

• Type: Thermal Overload Relay

• Rated Current Range: 4 A to 7.6 A

• Operating Voltage: 24 V DC to 690 V AC

• Rated Power: Varies based on current and load type

• Overload Protection: Provides protection for motors and other devices against overloads, preventing damage to the equipment

• Time Delay: Adjustable time delay to accommodate different load starting characteristics

• Contact Type: Normally Open contact, rated for 16 A

• Protection Type: Thermal protection with anti-jamming feature to prevent motor damage due to overload

• Dimensions: 90 mm x 45 mm x 80 mm

• Mounting Type: DIN Rail Mounting

• Ambient Temperature Range: -20°C to +60°C

• Protection Rating: IP20

• Certifications: CE, UL, RoHS

Product Advantages and Features:

1. Overload Protection: The TF42-7.6 thermal overload relay effectively protects motors from overload damage and extends equipment lifespan. It features an automatic reset function, restoring normal operation once the overload condition is cleared.

2. Wide Current Range: Supports a rated current range from 4 A to 7.6 A, making it suitable for a variety of motor-powered devices.

3. Adjustable Time Delay: This relay offers adjustable time delay functionality to allow flexible settings based on the load characteristics, avoiding false trips due to short-term high inrush currents.

4. High Reliability and Durability: Designed with strong resistance to electromagnetic interference, ensuring stable operation in environments with high interference, guaranteeing long-term reliability.

5. Easy Installation: Equipped with DIN rail mounting, it is quick and easy to install, saving space and suitable for use in various industrial control panels.

6. Wide Application: This relay is commonly used in industrial automation systems, especially for motor drive and protection systems, improving the safety and stability of equipment.

7. Temperature Compensation: The built-in temperature compensation mechanism adjusts the relay’s operating characteristics based on environmental temperature changes, ensuring stable performance under various environmental conditions.

Applications:

• Motor Protection: Used for overload protection of motors, preventing motor burnouts due to prolonged overloads, widely applied in pumps, fans, compressors, and other equipment.

• Industrial Automation: Used in automation control systems to protect motor-driven equipment, ensuring system stability and safe equipment operation.

• Power Control: As part of power control systems, the TF42-7.6 relay provides overload protection for motors and other load devices, avoiding failures in the power system and equipment damage.

• Building Automation: Applied in building automation systems for motor overload protection, enhancing the safety and reliability of the system, ensuring proper operation of electrical equipment.

• Manufacturing and Machinery: Used as a key component in machinery equipment, protecting motors from overload damage and suitable for various automated mechanical systems.

Precautions:

1. Current Settings: Set the overload relay’s current value according to the actual rated motor current to ensure effective protection.

2. Installation Environment: The relay operates within an ambient temperature range of -20°C to +60°C. Avoid using it in high-temperature or high-humidity environments to ensure normal operation.

3. Maintenance and Inspection: Regularly inspect the relay’s terminals for loose connections to ensure secure wiring and prevent failure of the protection function due to poor contact.

4. Avoid Overload: Ensure the motor’s overload conditions do not exceed the protection capability of the relay during installation to avoid frequent overloads that may damage the equipment.

5. Electromagnetic Interference: When used in environments with high electromagnetic interference, ensure the relay and electrical devices are properly shielded to enhance its anti-interference capabilities.