ABB TH3221 - 30A, 240V, 2-Pole, Fused Safety Switch

The ABB TH3221 is a purpose-built fused safety switch engineered for industrial and commercial environments where safe electrical isolation is non-negotiable. With a 30A rating at 240V and a 2-pole configuration, this device delivers dependable disconnection under load while supporting rigorous lockout/tagout procedures. Built for durability, it stands up to the demands of daily maintenance, servicing, and equipment isolation tasks.

Why the ABB TH3221 stands out

• Precise current protection: The fused design provides reliable overcurrent protection, safeguarding both personnel and equipment during shutdowns or fault events.
• Full isolation for 240V systems: The 2-pole arrangement ensures complete interruption of the circuit, preventing partial energization and enhancing safety during servicing.
• Indoor-friendly enclosure: NEMA 1 enclosure rating is optimized for indoor, dry environments, making it ideal for control rooms, machine bays, and electrical panels.
• Lockout/Tagout compatible: Designed to integrate with standard lockout/tagout procedures, helping facilities stay compliant during maintenance and repairs.
• Long-term reliability: Built with robust components to sustain repeated operation in demanding industrial settings, reducing downtime and maintenance costs.

Specifications at a glance

• Amperage Rating: 30A
• Voltage Rating: 240V
• Number of Poles: 2-Pole
• Enclosure Rating: NEMA 1
• Product Type: Fused Safety Switch
• Brand: ABB
• Model: TH3221

Ideal use cases

This safety switch is purpose-built for installations where operators must safely isolate power to equipment such as conveyors, packaging lines, processing gear, and automated control panels. It’s a practical choice for facilities performing regular maintenance, line changeovers, or safety upgrades, ensuring that equipment remains de-energized during servicing without compromising system integrity.

How it benefits your operation

By combining reliable fuse-based protection with straightforward isolation, the ABB TH3221 minimizes arc flash risk, supports compliant shutdowns, and accelerates maintenance workflows. The result is safer work practices, quicker troubleshooting, and fewer unexpected outages due to electrical faults in 240V, 30A circuits.

Practical installation and care tips

Install in a dry indoor location with adequate clearance for handle operation and fuse replacement. Use the device in accordance with local electrical codes and your facility’s safety program. When maintenance is required, follow lockout/tagout procedures to ensure a safe working environment, and replace fuses only with the same rating to preserve designed protection levels.

Ready to enhance your electrical safety infrastructure with a dependable, purpose-built solution? The ABB TH3221 delivers precise isolation, strong protection, and built-to-last performance for demanding industrial environments.