Square D LK3DU3 - 30A, Disconnect Switch

Meet the Square D LK3DU3 30A Disconnect Switch—the dependable choice for industrial and commercial environments where safe electrical isolation is non-negotiable. Engineered to deliver a clean, reliable disconnection under load, this disconnect switch supports proper lockout/tagout procedures and stands up to long-term service in demanding control panel applications.

Why the LK3DU3 stands out

• 30-amp reliability for steady, controlled shutdowns of medium-duty circuits without compromising safety or performance.
• Safe lockout/tagout compatibility designed to provide a clear, tamper-evident point for maintenance teams during service and fault isolation.
• Under-load disconnection capability ensures circuits can be safely opened while powered, reducing downtime and risk during servicing.
• Rugged durability tailored for continuous operation in busy environments, resisting wear from repeated actuation and industrial conditions.
• Simple integration purpose-built for panel mounting in commercial and industrial electrical systems, helping you streamline installation and maintenance.

Ideal use cases

Specifications at a glance

• Amperage Rating: 30A
• Product Type: Disconnect Switch
• Brand: Square D
• Model: LK3DU3

Practical considerations and tips

Pair the LK3DU3 with established lockout/tagout practices to maximize safety during maintenance windows. Ensure accessibility of the disconnect handle for quick, unambiguous isolation and verify that wiring complies with your panel design guidelines. For facilities upgrading safety protocols, this switch provides a clear, dedicated disconnection point that technicians can rely on, reducing ambiguity during repair or routine servicing.

Designed for professionals who demand trustworthy isolation and straightforward operation, the Square D LK3DU3 30A Disconnect Switch is a pragmatic choice for improving safety, reducing downtime, and ensuring consistency across your electrical infrastructure.