ABB THN3365AR Safety Switch

• 1. Product Overview

  The ABB THN3365AR Safety Switch is an industrial-grade isolating switch designed to safely disconnect power circuits for equipment maintenance and emergency shutdowns. It provides reliable disconnection capability, high mechanical strength, and compliance with international safety standards. The modular design allows for easy installation and maintenance, suitable for demanding industrial safety applications.

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  2. Technical Specifications

  • Model: THN3365AR

  • Type: Safety / Isolating Switch

  • Rated Voltage (Ue): AC 690 V / DC 600 V

  • Rated Current (Ie): AC-23A 65 A

  • Poles: 3 poles

  • Operation: Manual rotary handle with lockable design

  • Short-Circuit Protection: Compatible with fuse protection

  • Protection Rating: IP65

  • Insulation Material Class: Class B / IEC 60947-3 compliant

  • Mechanical Life: ≥ 10,000 operations

  • Electrical Life: ≥ 6,000 operations at rated load

  • Mounting: Panel mount or DIN rail mount

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

  • Housing Material: High-strength engineering plastic or metal

  • Locking Function: Supports padlock to prevent unauthorized operation

  • Dimensions: ~120 × 85 × 75 mm (varies slightly by variant)

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  3. Advantages and Features

  • High safety: Lockable to ensure personnel and equipment safety.

  • Durable mechanical and electrical performance: Long service life for industrial applications.

  • High protection rating: IP65 for dust and water resistance.

  • Easy operation: Rotary handle with clear ON/OFF indication.

  • Flexible installation: Supports panel or DIN rail mounting.

  • International standards compliant: Meets IEC 60947-3 for safe isolation.

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  4. Typical Applications

  • Power isolation for industrial automation equipment

  • Main circuit protection in motor control centers (MCC)

  • Distribution systems and industrial electrical maintenance

  • Machinery maintenance and emergency shutdown

  • Production line and factory safety control

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  5. Installation & Usage Notes

  • Confirm rated voltage and current match the system before installation.

  • Ensure handle and padlock function operate correctly to prevent misuse.

  • Tighten terminals securely to avoid poor contact or overheating.

  • Maintain IP65-compliant installation environment to prevent water or dust ingress.

  • Inspect mechanical and electrical components periodically and replace aged parts as needed.

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The structure and details of the product： ​

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