ABB TF65-60 Thermal Overload Relay

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1. Product Overview

The ABB TF65-60 is a high-performance thermal overload relay designed for overload protection of AC motors and other equipment. Using a bimetallic strip for thermal detection, the relay trips when current exceeds the set value, protecting motors and circuits from damage. TF65-60 can be used in combination with ABB contactors, providing comprehensive motor protection with options for manual or automatic reset.

2. Technical Specifications

Electrical Specifications

• Model: TF65-60

• Rated Current Range (Ie): 48–65 A

• Rated Operating Voltage (Ue): 690 V AC

• Poles: 3P

• Overload Type: Thermal (bimetallic strip)

• Adjustable Current Range: 48–65 A

• Reset Type: Manual / Automatic optional

• Rated Frequency: 50/60 Hz

• Auxiliary Contacts (alarm/status): 1 NO + 1 NC optional

Environmental & Mechanical

• Operating Temperature: –25°C … +60°C

• Protection Degree: IP20

• Mechanical Life: ≥ 10,000 operations

• Electrical Life: ≥ 6,000 operations (with contactor)

• Mounting: Directly on ABB contactors (e.g., AF series)

• Dimensions (WxHxD): Approx. 45 mm × 90 mm × 75 mm

• Weight: Approx. 0.6 kg

3. Advantages & Key Features

1. Reliable overload protection — Accurate thermal tripping mechanism for fast response.

2. Wide adjustment range — 48–65 A adjustable current suitable for various motor loads.

3. Flexible reset options — Manual or automatic reset according to application needs.

4. Compact installation — Direct mounting on ABB contactors saves panel space.

5. Auxiliary alarm contacts — Provides status feedback for system monitoring.

6. High mechanical and electrical life — Ensures long-term reliable operation with reduced maintenance.

4. Application Areas

• Industrial motor protection (pumps, fans, compressors, conveyors)

• Automated production lines and machinery

• HVAC systems and large building electrical equipment

• Water treatment and supply systems

• Chemical, petrochemical, and pharmaceutical plants

• Low-voltage distribution and motor control centers

5. Precautions

1. Verify rated current matches motor load before installation to prevent nuisance tripping or protection failure.

2. Use the relay with compatible ABB contactors for complete protection.

3. Install in a dry, ventilated environment, avoiding high temperatures, dust, or corrosive gases.

4. Disconnect load power before manual reset to ensure safety.

5. Periodically check relay operation and contact wear to ensure long-term reliability.

6. Avoid prolonged operation above rated current or high-temperature environments to extend service life.

The structure and details of the product：

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