GE THN3365 - 400A, 600V, Disconnect Switch

The GE THN3365 disconnect switch is engineered for reliability in demanding industrial and commercial environments where safe electrical isolation matters most. Designed to deliver dependable disconnection under load, it supports proper lockout/tagout procedures and stands up to long-term use in tough operating conditions. If your facility relies on quick, clean isolation of power for maintenance or emergency shutdowns, the THN3365 is built to perform without compromise.

Why the GE THN3365 stands out

• High-load capability: 400A amperage rating provides confident isolation for demanding equipment and heavy service lines.
• Versatile voltage readiness: 600V rating makes it suitable for a wide range of industrial power systems and distribution setups.
• Safety-first design: Built to support lockout/tagout procedures, helping your team meet safety compliance during maintenance and servicing.
• Durable, long-term performance: Robust construction designed for enduring operation in demanding environments, reducing replacement frequency and downtime.

Ideal applications

Particularly well-suited for factories, manufacturing cells, large mechanical rooms, and commercial facilities where reliable electrical isolation is essential. Use it to safely disconnect feeders, machine lines, or service panels during preventive maintenance, repairs, or upgrades, and to enable compliant lockout/tagout practices that protect workers.

Use cases and practical benefits

• Maintenance windows: Isolate circuits quickly and confidently to perform service work without energizing connected equipment.
• Emergency shutdowns: Provide a clear, definitive disconnect point to quickly de-energize systems when safety is at risk.
• System upgrades: Facilitate safe isolation during panel or wiring upgrades without compromising uptime elsewhere in the facility.
• Compliance assurance: Aligns with standard lockout/tagout protocols to help meet OSHA and other safety requirements.

Technical specifications at a glance

• Amperage Rating: 400A
• Voltage Rating: 600V
• Product Type: Disconnect Switch
• Brand: GE
• Model: THN3365

Practical tips for optimal performance

• Pair the THN3365 with compliant lockout/tagout devices and procedures to maximize safety during maintenance.
• Schedule regular inspections of the disconnect switch mechanism and mounting hardware to ensure reliable operation over time.
• Document its integration points within your electrical system so technicians can quickly identify the correct isolation point during servicing.

For facilities seeking a dependable, purpose-built isolation solution, the GE THN3365 offers clear advantages: robust performance under load, strong safety alignment through lockout/tagout support, and durable construction designed to endure the rigors of industrial and commercial power environments.