ABB EOT16U3P4-1P Closed Switch Disconnector

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1. Product Overview

The ABB EOT16U3P4-1P is an industrial Closed Switch Disconnector designed for switching and isolating circuits in electrical distribution systems. It combines the functions of a circuit breaker and an isolator, providing safe power disconnection for maintenance and ensuring reliable operation in low-voltage distribution, industrial equipment, and control cabinets.

2. Detailed Technical Specifications

• Model: EOT16U3P4-1P

• Type: Closed Switch Disconnector

• Rated Voltage: AC 690 V

• Rated Operating Current: 16 A

• Poles: 3 poles

• Short-Circuit Breaking Capacity: 6 kA

• Operation Mode: Manual, with locking mechanism

• Mechanical Life: ≥ 10,000 operations

• Electrical Life: ≥ 5,000 operations

• Mounting: DIN rail or screw mounting

• Protection Class: IP20

• Operating Temperature: –25 ℃ to +60 ℃

• Standards & Certification: IEC 60947-3, CE

3. Advantages & Features

• High safety: Combines circuit breaker and isolator functions for secure operation

• Easy operation: Manual switching with lockable mechanism to prevent accidental operation

• High reliability: Long mechanical and electrical life suitable for frequent operation

• Strong short-circuit withstand: Up to 6 kA short-circuit current

• Flexible installation: DIN rail or screw mounting, ideal for control cabinets

• Low maintenance: Simple structure, easy to maintain

4. Typical Application Areas

• Low-voltage distribution systems

• Industrial control cabinets

• Motor and VFD circuit protection

• Industrial automation systems

• Building and energy distribution systems

• Applications requiring safe isolation for maintenance

5. Precautions & Installation Notes

• Verify rated voltage, current, and poles before installation

• Ensure circuits are de-energized before operation; avoid switching under load

• Install in well-ventilated locations, avoiding high temperature and humidity

• Regularly check mechanical operation and contact condition

• Use the locking mechanism to prevent accidental operation

• Avoid overload operation to extend service life

The structure and details of the product：

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