GE TH3363 - 100A, 600V, 3-Pole, Fused Disconnect Switch

The GE TH3363 is a rugged 3-Pole Fused Disconnect Switch engineered for dependable electrical isolation in demanding industrial and commercial environments. With a 100A rating and a 600V capacity, it delivers reliable overcurrent protection and safe disconnection when maintenance or fault events require it. Designed to work hand in hand with lockout/tagout procedures, this switch keeps personnel safe and equipment protected during servicing and routine outages.

• Three-pole isolation: disconnects all hot lines for complete, safe de-energization of three-phase equipment.
• Integrated fusing: offers immediate overcurrent protection and rapid fault interruption to shield downstream components.
• Lockout/Tagout friendly: streamlined for safety programs, making maintenance workflows more reliable and compliant.
• NEMA 1 enclosure: indoor, general-purpose protection ideal for clean, dry facilities and control rooms.
• Durable, long-lasting construction: built to withstand the demands of busy industrial floors and continuous operation.

Ideal applications

The TH3363 is well suited for motor control circuits, feeders to distribution panels, and equipment that requires strict isolation and protection in manufacturing lines, processing plants, HVAC systems, and other commercial installations. Its 100A, 600V rating covers a wide range of medium-power loads, delivering a compact, reliable solution where space and safety matter.

Why choose this fused disconnect over non-fused alternatives

Compared to simple disconnect switches, the TH3363’s integrated fusing delivers an extra layer of protection by interrupting fault currents at the source. This reduces electrical stress on downstream devices and enhances overall system safety, while the three-pole design ensures a clean, complete shutoff for all live conductors. The combination of a robust, indoor-friendly enclosure and economy of space makes it a practical choice for retrofit projects and new installations alike.

Practical tips for setup and maintenance

• Ensure compatibility with standard three-phase wiring and your control system’s lockout/tagout protocols.
• Schedule regular inspections of fuse elements and switching operation to maintain reliable performance.
• Store and label the disconnect clearly in accordance with facility safety policies to support rapid, safe maintenance.
• Use in clean, dry indoor environments to preserve enclosure integrity and prolong service life.