ABB TA200DU90 Thermal Overload Relay

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Product Overview

The ABB TA200DU90 is a Thermal Overload Relay designed to provide overload protection for three‑phase AC motors and similar equipment. Using a bimetallic thermal element, it senses prolonged overcurrent conditions and trips to disconnect the circuit, preventing motor overheating and damage. It is typically used in combination with a contactor to form a motor control and protection unit, widely applied in industrial automation systems.

Technical Specifications

• Model: TA200DU90

• Type: Thermal Overload Relay

• Current Adjustment Range: 63–90 A (adjustable)

• Applicable Equipment: Three‑phase AC motors

• Rated Insulation Voltage: AC 690 V

• Auxiliary Contacts: 1 Normally Open (NO) + 1 Normally Closed (NC)

• Tripping Mechanism: Thermal (bimetallic strip)

• Reset Method: Manual or automatic (model dependent)

• Contactor Compatibility: Compatible with ABB contactors

• Mounting: DIN rail or combined with contactor

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

• Protection Rating: IP20

• Standards: IEC 60947‑4‑1 / EN 60947‑4‑1

• Dimensions (W×H×D): approx. 45 × 90 × 80 mm

• Weight: approx. 0.5 kg

Advantages and Features

1. Reliable Overload Protection
   Bimetallic thermal sensing provides dependable protection against prolonged overcurrent, preventing motor damage.

2. Wide Adjustable Current Range
   Adjustable from 63–90 A to suit different motor power ratings.

3. Auxiliary Contact Feedback
   Includes NO and NC auxiliary contacts for status feedback or control logic integration.

4. Easy Contactor Integration
   Works with ABB contactors to form compact motor control and protection units, simplifying wiring and design.

5. Industrial‑Grade Construction
   DIN rail or combined mounting supports a variety of industrial field installation requirements.

6. Standards Compliance
   Designed and tested to meet IEC/EN standards, ensuring stable and safe long‑term operation.

Typical Applications

• Overload protection for three‑phase AC motors

• Drives such as fans, pumps, and compressors

• Motor Control Centers (MCCs)

• HVAC motor protection

• Motor control in automated production lines

• Industrial plant and machinery power systems

Precautions

1. Set Correct Current Range
   Adjust the relay’s current setting to match the motor’s rated current prior to installation.

2. Correct Contactor Pairing
   Pair with a properly rated contactor for correct mechanical and electrical compatibility.

3. Proper Wiring
   Wire according to electrical schematics to ensure secure main and control circuit connections.

4. Environmental Considerations
   Avoid direct exposure to moisture, corrosive atmospheres, or strong vibration; use protective measures if required.

5. Regular Inspection
   Periodically check relay operation, auxiliary contact status, and wiring integrity to ensure stable system performance.