ABB EHDB280 contactor

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1. Product Overview & Specifications

• Model / Part Number: EHDB280

• Type / Function: AC Contactor

• Rated Current: 280 A

• Rated Operational Voltage: AC 690 V

• Coil Voltage: Optional AC/DC 24 V, 110 V, 220 V, etc.

• Number of Poles: 3 poles (main contacts)

• Mechanical Life: ≥ 1,000,000 operations

• Electrical Life: ≥ 500,000 operations (at rated load)

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

• Protection Class: IP20 (suitable for cabinet installation)

• Mounting: DIN rail or screw mounting

• Lifecycle Status: OEM module, suitable for new installation or replacement

2. Advantages & Key Features

1. High Reliability
   ABB OEM design ensures long-term stable operation in industrial environments.

2. High Rated Capacity
   Supports up to 280 A, suitable for large motor or high-load control applications.

3. Long Lifespan
   Extended mechanical and electrical life reduces maintenance frequency and downtime.

4. Flexible Coil Options
   Multiple coil voltages available to match different control systems.

5. Industrial Durability
   Operates reliably in high/low temperatures, vibration, and strong electromagnetic interference environments.

6. Easy Installation
   DIN rail or screw mounting allows easy integration into industrial control cabinets.

3. Typical Application Areas

• Industrial motor starting and control

• Automated production lines

• Power distribution systems and control panels

• HVAC large motor control

• Industrial equipment and heavy machinery switching

4. Precautions & Usage Notes

1. Power and Load Requirements
   Ensure the contactor’s rated current and coil voltage match the actual load and control power.

2. Installation Environment
   Install in a dry, dust-free control cabinet; avoid moisture, corrosive, or flammable environments.

3. Thermal Management & Ventilation
   Maintain airflow around the contactor to prevent overheating and prolong life.

4. Safe Operation
   Disconnect power during installation, maintenance, or replacement; follow electrical safety guidelines.

5. Regular Inspection
   Periodically check contact wear, coil condition, and wiring reliability; replace if necessary.

The structure and details of the product：

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