GE THN3321 - 30A, 240V, 3-Pole, Heavy-Duty, Fuse Switch

GE THN3321 – 30A, 240V, 3-Pole Heavy-Duty Fuse Switch is built to withstand the rigors of industrial and commercial environments, delivering dependable on/off isolation paired with reliable overcurrent protection. This three-pole design provides a single, clear disconnect point for three-phase systems, helping maintenance teams work safely and efficiently.

With a 30-amp, 240-volt rating and a heavy-duty duty cycle, the THN3321 is purpose-built for motor disconnects, panelboards, and branch circuits where space is at a premium and reliability cannot be sacrificed. Its compact footprint makes it a practical choice for tight control panels, while the maintainable fuse-switch construction simplifies routine servicing and fuse replacement when needed.

• Model: THN3321
• Amperage: 30A
• Voltage: 240V
• Poles: 3-Pole
• Duty: Heavy-Duty
• Primary role: Isolator with overcurrent protection for three-phase systems
• Ideal applications: motor disconnects, panelboards, and branch circuit protection in demanding environments

Why the GE THN3321 stands out

• Clear, reliable isolation: A single switch controls all three phases, reducing the risk of accidental energization during maintenance.
• Robust construction: Designed to endure frequent switching and the vibration associated with industrial settings.
• Efficient use of space: A compact fusible switch that fits neatly into standard enclosures and panel layouts without compromising protection.
• Purpose-built for protection and practicality: Combines straightforward disconnect capability with proven overcurrent protection, streamlining wiring and diagnostics.

Practical use cases

• Motor-driven equipment such as conveyors, pumps, fans, and compressors where a safe, accessible disconnect is required.
• Panelboard sections that demand reliable branch circuit protection in a compact, serviceable package.
• Control panels in both new installations and retrofit projects where a rugged, easy-to-maintain fusible switch is advantageous.

Thinking about installation and maintenance? The GE THN3321 is designed for qualified personnel to review and service within standard electrical environments. It delivers dependable performance for routine protection tasks while keeping your control systems simple, safe, and ready for business-critical operations.