ABB OT80FT3 Non-Fuse Isolating Switch

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Product Model

ABB OT80FT3 Non-Fuse Isolating Switch

Product Overview

The OT series by ABB, such as the OT80FT3, is a high-performance manually operated isolating switch/disconnector designed for low-voltage power distribution and industrial control systems. The “non-fuse” version means that the switch does not include a fuse but is used solely for isolation purposes. The OT80FT3 is suitable as a main isolator switch for disconnecting power during maintenance, service, or for safe operation.

Technical Specifications

• Model: OT80FT3

• Series: OT series disconnector/isolating switch ABB 图书馆+1

• Poles: 3-pole (three-phase) typical Farnell+1

• Rated Current: ~80 A AC three-phase northcoast.com+1

• Rated Operational Voltage: up to ~690 V AC (depending on version) Farnell+1

• Mounting: Panel, DIN-rail or base mounting depending on version ABB 图书馆

• Protection Class: IP20 for the basic unit Farnell

• Standards: IEC 60947-3, UL 508 (or equivalent) Farnell+1

• Additional typical ratings: 8 kV impulse withstand, Ui ~750 V Farnell

Advantages & Key Features

• Reliable isolation: Designed for safe power shut-off and maintenance isolation.

• Space-saving design: Short current path and compact build from OT series. ABB 图书馆

• Flexible configurations: Wide range of accessories, poles, current ratings and mounting options. ABB 图书馆

• Global standard compliance: Suitable for international installations.

• Wide application: Use as main isolator, load disconnect switch, control panel isolator, etc.

Application Areas

• Industrial main distribution isolator switches

• Equipment or machine power isolation for maintenance

• In-line isolators in switchgear or panelboards

• Isolation of production line segments or control cabinets

• Automation equipment and control panels

Precautions

1. Ensure the chosen switch’s current and voltage ratings match the system’s requirements.

2. Follow ABB’s installation instructions for wiring tightness and mounting securely.

3. Install in a well-ventilated location; avoid extreme environments (high temperature, humidity, corrosive gas).

4. While non-fuse, ensure you evaluate whether a fused isolator is required for your system.

5. Always disconnect the power supply before performing installation or maintenance.

6. Periodically inspect the switch mechanism, connection integrity and locking features to maintain reliability.

The structure and details of the product：

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