ABB OT400E03 1SCA022727R7960 Non-fused switch disconnector

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1. Product Overview

The ABB OT400E03 (1SCA022727R7960) is a non-fused switch disconnector designed for low-voltage distribution systems to safely switch and isolate circuits.
It is suitable for industrial, commercial, and residential distribution systems and can be used in conjunction with protective devices for safe control and maintenance.

2. Main Technical Specifications (Typical)

• Model: OT400E03

• ABB Part Number: 1SCA022727R7960

• Product Type: Non-fused Switch Disconnector

• Rated Voltage: AC 690 V

• Rated Current: 400 A

• Poles: 3

• Rated Short-Circuit Breaking Capacity: 25 kA

• Mechanical Life: ≥ 10,000 operations

• Electrical Life: ≥ 6,000 operations

• Mounting: Panel mount or DIN rail

• Operation Method: Manual rotary knob

• Protection Class: IP20 (with enclosure IP40/IP65)

• Operating Temperature Range: -25 ℃ to +60 ℃

• Enclosure Material: Flame-retardant engineering plastic

3. Key Advantages and Features

1. High Safety

   • Provides reliable circuit isolation for maintenance and operation

   • High protection rating, suitable for various industrial environments

2. High Reliability and Durability

   • Mechanical life ≥ 10,000 operations, electrical life ≥ 6,000 operations

   • High rated current and short-circuit breaking capacity

3. Compact Design

   • Space-saving, suitable for panel or rail mounting

4. Easy Operation

   • Intuitive manual rotary knob with clear ON/OFF indication

5. Versatile Compatibility

   • Can be used with fuses or other protective devices

   • Suitable for industrial, commercial, and residential distribution

4. Typical Applications

• Industrial low-voltage distribution systems

• Commercial and residential building distribution

• Motor and drive control circuits

• Power and energy systems

• Distribution panels and switchgear

5. Installation and Maintenance Notes

1. Power Verification

   • Ensure rated current and voltage match system requirements

2. Power-Off Operation

   • Disconnect power before installation, maintenance, or wiring

3. Installation Environment

   • Avoid high temperature, humidity, and dust

   • Ensure proper ventilation

4. Operation Guidelines

   • Operate rotary knob manually, do not force

   • Periodically check knob and contact status

5. Safety Inspection

   • Regularly check terminal tightness and switch operation

   • Avoid live disassembly or operation