Square D DU221RBUP - 30A, 240V, 2-Pole, Safety Switch

The Square D DU221RBUP 30A, 240V, 2-Pole Safety Switch is engineered for safe, reliable electrical isolation in demanding industrial and commercial environments. Designed to support proper lockout/tagout (LOTO) procedures, it ensures a clear, verifiable path to de-energize equipment during maintenance and service—reducing risk for workers and equipment alike. Built for long-term durability, this safety switch delivers dependable disconnection under load, so you can trust it to perform when it matters most.

• Amperage rating: 30 A
• Voltage rating: 240 V
• Poles: 2-Pole design for full isolation of both hot lines
• Product type: Safety Switch
• Brand: Square D
• Model: DU221RBUP

Why this safety switch stands out

What sets the DU221RBUP apart is its focused emphasis on safe, compliant isolation paired with practical, real-world durability. The 2-pole construction ensures complete separation of live conductors, minimizing backfeed and enhancing safety during maintenance windows. Its 240V capability fits a wide range of equipment and panel configurations common in workshops, facilities, and production floors. By design, it aligns with lockout/tagout workflows, making it straightforward to secure a de-energized state and protect personnel during servicing.

Ideal use cases

• Machine maintenance on conveyors, presses, fans, motors, and compressors
• Panel isolation within service enclosures and subpanels
• Facilities operations in manufacturing, warehousing, and processing environments
• Situations requiring verified de-energization before mechanical or electrical work

Practical benefits you’ll notice

With the DU221RBUP, you gain a reliable means to:

• Control energy during servicing without exposing technicians to live loads
• Meet safety standards and lockout/tagout procedures with a dedicated isolation point
• Minimize downtime caused by uncertain disconnections, thanks to proven disconnection under load
• Reduce wear on equipment from accidental energization during maintenance cycles

Whether you’re upgrading an aging safety switch or equipping a new installation, the Square D DU221RBUP delivers a precise balance of safety, reliability, and practical performance. Its straightforward 2-Pole 30A/240V design makes it an essential component for responsible electrical isolation in busy facilities, giving maintenance teams the confidence to work safely and efficiently.