GE TH3364 - 200A, 3-Pole, Heavy Duty Fused Disconnect Switch

The GE TH3364 Heavy Duty Fused Disconnect Switch is built for reliability in demanding industrial and commercial environments where safe electrical isolation is non-negotiable. With a robust 200A capacity and a three-pole configuration, this disconnect switch ensures complete, safe disconnection of three-phase power, even under load. Designed to work with proper lockout/tagout procedures, it helps protect maintenance personnel and equipment while delivering durable long-term performance.

Why the GE TH3364 stands out

• 200A amperage rating handles demanding feeder and motor circuits with confidence, reducing the need for oversized equipment and helping optimize panel space.
• 3-Pole design provides full-phase isolation, ensuring all phases are safely disconnected for thorough maintenance and fault clearance.
• Heavy duty fused construction offers reliable overcurrent protection and fault containment, helping protect downstream equipment from overloads and short circuits.
• NEMA 1 enclosure delivers solid indoor protection against dust and incidental contact, suitable for indoor electrical rooms, switchgear areas, and controlled environments.
• Lockout/Tagout compatibility supports standard safety protocols, enabling workers to lock the switch in the OFF position during service without risk of accidental re-energization.
• Long-term durability designed for steady operation in busy facilities, with a construction that stands up to routine maintenance and frequent cycling.
• Seamless integration fits into standard electrical distributions and service setups, making it a practical replacement or addition for expanding, remodeling, or upgrading circuits.

Ideal applications and use cases

• Motor control and feeder disconnects on manufacturing lines, conveyors, and automation equipment.
• Air handling units, pumps, and compressor banks where reliable isolation is essential during servicing.
• Main service disconnects in warehouses, data centers, and large commercial facilities requiring clear, safe off-state control.
• Indoor electrical rooms and panel assemblies where compact, durable switching is needed without sacrificing safety.

Key benefits and practical considerations

Choosing a fused disconnect switch like the GE TH3364 means prioritizing safety, reliability, and maintenance efficiency. The fused design provides immediate overcurrent protection, helping to minimize damage to upstream equipment during faults. The three-pole arrangement ensures no leg remains energized during service, which simplifies risk assessment and work planning. Its NEMA 1 enclosure is ideal for indoor installations where dust and incidental contact are typical, while the unit’s robust construction supports repeated use in active facilities.

Specifications at a glance

• Amperage Rating: 200A
• Number of Poles: 3-Pole
• Enclosure Rating: NEMA 1
• Product Type: Heavy Duty Fused Disconnect Switch
• Brand: GE
• Model: TH3364

Installation and best practices

For optimal safety and performance, pair the TH3364 with compatible fusing and wiring configurations in accordance with your facility’s electrical standards. Use proper lockout/tagout procedures during maintenance, ensure fuses are accessible for service, and verify the switch is integrated into a suitable indoor enclosure that aligns with your distribution layout. Regular inspections of contacts, mounting hardware, and enclosure integrity will help sustain dependable disconnection when it matters most.