Square D 306-T - Fused Disconnect Switch

The Square D 306-T Fused Disconnect Switch is built for serious industrial and commercial environments where safe, reliable electrical isolation matters most. Designed to deliver dependable disconnection under load, this switch supports essential lockout/tagout procedures and helps keep maintenance teams and equipment protected during service and routine checks.

Why choose the 306-T? It pairs integrated fuse protection with a robust disconnect mechanism, providing a clear boundary between energized circuits and safe working conditions. This combination reduces the risk of fault energy propagating through your power distribution system and supports fast, controlled power-downs when service is required.

Key differentiators and benefits

• Safe electrical isolation: Enables a verifiably off state for maintenance, repairs, and inspections, with clear separation of power from the protected circuit.
• Integrated fuse protection: Provides overcurrent protection to downstream equipment, helping prevent damage from short circuits or overloads.
• Lockout/tagout compatibility: Designed to support proper safety procedures, ensuring workers can securely tag and, if needed, padlock the disconnect during service.
• Reliable performance under load: Engineered to maintain a dependable disconnection even when circuits are energized, reducing downtime and increasing operational uptime.
• Durability for long-term use: Built to withstand demanding environments, delivering consistent reliability in daily industrial and commercial operations.

Ideal use cases

The Square D 306-T is well-suited for distributing power to motors, transformers, feeders, and other critical loads where safe isolation is required during maintenance or downtime. It serves facilities managers, electrical contractors, and maintenance teams across manufacturing floors, processing plants, and large commercial buildings that rely on clear, safe disconnection points in their electrical systems.

Practical considerations and tips

• Use in scenarios where you need both isolation and protection: fuse-based disconnection helps safeguard equipment and personnel during servicing.
• Plan lockout/tagout procedures around the switch’s capabilities to ensure a compliant and verifiable shutdown process.
• Match fuse types and ratings to the connected circuits to ensure optimal protection and reliable disconnection under load.
• Incorporate routine inspections of the switch and surrounding enclosure to maintain reliability and minimize unexpected failures.

Specifications at a glance

• Product Type: Fused Disconnect Switch
• Brand: Square D
• Model: 306-T