ABB TA200DU-175 thermal overload relay

ABB TA200DU-175 Thermal Overload Relay – Product Information

1. Product Overview

The ABB TA200DU-175 thermal overload relay is a high-performance protection device designed for AC motor overload and phase-failure protection. It can be directly mounted on ABB contactors such as A210, A260, and A300, forming a reliable motor protection circuit. Using precise bimetal sensing technology, it provides accurate protection against overload, stall, and phase loss, preventing motor damage. With a compact design and reliable performance, it is ideal for industrial motor control systems.

2. Technical Specifications

• Model: TA200DU-175

• Adjustable Current Range: 140 A – 175 A

• Compatible Contactors: A210, A260, A300

• Number of Poles: 3 (three-phase protection)

• Rated Operational Voltage (Ue): 690 V AC, 50/60 Hz

• Rated Insulation Voltage (Ui): 1000 V AC

• Trip Class: Class 10A

• Auxiliary Contacts: 1 NO + 1 NC

• Reset Type: Manual / Automatic selectable

• Mounting Method: Directly on contactor or standalone

• Operating Temperature: −20 ℃ to +60 ℃

• Phase Failure Protection: Available

• Mechanical Life: ≥ 1,000,000 operations

• Electrical Life: ≥ 100,000 operations

3. Features and Advantages

1. High Accuracy – Sensitive bimetal elements ensure precise and reliable overload tripping.

2. Compact Modular Design – Perfect compatibility with ABB contactors, saving panel space.

3. Comprehensive Protection – Offers overload, phase-failure, and stall protection with reset options.

4. Adjustable Current Setting – Easy tuning for different motor current ratings.

5. Easy Installation – Can be mounted directly under the contactor or separately.

6. Durable Construction – High-strength insulating housing with excellent heat and vibration resistance.

7. User-Friendly Interface – Clear indication and test buttons for convenient operation and maintenance.

4. Application Fields

• Industrial automation systems

• Pump and fan control systems

• Water treatment and compressor units

• Conveyor and packaging machinery

• Building electrical and HVAC systems

• Power distribution and energy control

• Mining, metallurgy, and chemical machinery

5. Precautions

1. Ensure the relay’s setting matches the motor’s rated current before installation.

2. Tighten all terminals securely to avoid overheating due to loose connections.

3. Avoid using in environments with high humidity, dust, or corrosive gases.

4. Regularly inspect the contacts and bimetal elements for aging or oxidation.

5. Adjust the setting slightly lower when operating in high-temperature environments.

6. Always disconnect the power supply before maintenance or inspection.

The structure and details of the product：

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