ABB TH3363R - 100A, 3-Pole, Fused Safety Switch

Meet the ABB TH3363R — a 100A, 3-pole fused safety switch engineered for demanding industrial and commercial environments where safe electrical isolation is essential. Designed to integrate seamlessly with lockout/tagout procedures, this switch delivers dependable disconnection under load, supporting long-term durability and safer maintenance routines.

Key advantages

• Three-pole configuration provides complete phase isolation for safer service and startup of equipment.
• Fused design adds overcurrent protection, minimizing arc energy and protecting downstream equipment during switching.
• NEMA 3R enclosure offers outdoor-ready protection against rain, dust, and other harsh conditions, expanding where you can install it.
• Structured for easy compliance with lockout/tagout protocols, helping teams pause power safely during maintenance.
• Robust construction designed for steady performance in challenging environments, reducing downtime and maintenance frequency.

Ideal use cases

• Industrial and commercial facilities requiring reliable motor and feeder isolation, such as conveyors, pumps, and large fans.
• Maintenance and service shutdowns where a clear, verifiable disconnect under load is critical for worker safety.
• Outdoor or semi-exposed installations where weather resistance is a must-have feature.

Who should consider the ABB TH3363R

• Facilities engineers, plant managers, and maintenance teams seeking a durable, code-friendly safety switch.
• Electricians tasked with implementing compliant lockout/tagout procedures and safe energy practices.
• Equipment operators needing a reliable, ready-to-use disconnect for critical machinery.

Specifications at a glance

• Amperage rating: 100A
• Number of poles: 3-pole
• Enclosure rating: NEMA 3R
• Product type: Fused safety switch
• Brand: ABB
• Model: TH3363R

Practical considerations and tips

• Ensure installation by qualified electrical personnel in accordance with local codes and safety practices.
• Keep spare fuses accessible to minimize downtime during routine maintenance or fault-finding.
• Use the fused disconnect as the primary service point for motors and heavy loads to maximize protection and control.
• Leverage the NEMA 3R enclosure for outdoor installations where weather exposure is a factor, reducing corrosion risks and downtime.