ABB AF400-30-11-70 Contactor

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1. Product Overview

The ABB AF400-30-11-70 is a three-phase AC contactor, part of ABB’s AF series for high-power industrial applications. It is designed for remotely switching motors, lighting, heating loads, and other heavy-duty equipment. With high rated current, reliable operation, long service life, and high-frequency switching capability, it is widely used as a main switching device in industrial automation and power distribution systems.

2. Technical Specifications

• Model: AF400-30-11-70

• Product Type: Three-phase AC Contactor

• Rated Voltage: 690 V AC

• Rated Current: Main contacts 400 A

• Coil Voltage: 220 V AC / 50 Hz (options: 110 V, 380 V, etc.)

• Number of Poles: 3 main contacts + 1 auxiliary contact NO

• Mechanical Life: ≥ 10,000,000 operations

• Electrical Life: ≥ 200,000 operations (at rated load)

• Insulation Class: F

• Mounting: DIN rail or panel mounting

• Protection Class: IP20

• Operating Temperature: -25 ℃ to +55 ℃

• Standards Compliance: IEC 60947-4-1, GB/T 14048.4

• Features: High current capacity, interference-resistant design, fast response, suitable for high-frequency operation

3. Key Advantages & Features

• High Current Capacity – Suitable for heavy-duty motors and large industrial equipment.

• Reliable and Long Lifespan – Mechanical life ≥ 10,000,000, electrical life ≥ 200,000 operations.

• Fast Response & Interference Resistance – Efficient and reliable electromagnetic coil.

• Compact Design – Space-saving for control panel installation.

• Auxiliary Contacts for Control Expansion – Remote signaling, interlocks, or control logic.

• Multiple Coil Voltages – Flexible adaptation to different control systems.

4. Typical Applications

• Industrial motor control (pumps, fans, compressors, elevators)

• Automation production line control

• High-power lighting and heating load control

• HVAC and industrial cooling systems

• Remote power switching in distribution panels

• Equipment maintenance isolation and control circuits

5. Installation & Usage Notes

• Verify Rated Current and Load Type – Prevent overcurrent and ensure safe operation.

• Match Coil Voltage – Ensure coil voltage matches control supply to prevent malfunction.

• Proper Wiring – Connect main and auxiliary contacts according to control circuit design.

• Avoid High Humidity or Corrosive Environments – Use protective measures if necessary.

• Periodic Inspection – Check contacts, coil, and insulation for reliable long-term operation.