Square D H312NDS - 30A, 600V, 3-Pole, Fused Safety Switch

The Square D H312NDS 30A, 600V, 3-Pole Fused Safety Switch is engineered for industrial and commercial environments that demand safe, reliable electrical isolation. With its fused design and three-pole configuration, it delivers dependable disconnection under load and supports proper lockout/tagout procedures to protect maintenance personnel and equipment.

• Amperage rating: 30 A
• Voltage rating: 600 V
• Poles: 3-Pole (three-phase design)
• Product type: Fused Safety Switch
• Brand: Square D
• Model: H312NDS

Why it matters — this device combines protective fusing with a robust disconnect mechanism, meaning fault currents are limited at the source and downstream equipment is shielded from transients. The built-in fusion path enhances safety during de-energization, which is crucial for servicing motors, conveyors, and other three-phase machinery.

• Safe maintenance workflows: Designed to accommodate lockout/tagout procedures, ensuring circuits remain de-energized during service or inspection.
• Reliable under-load disconnection: Engineered to disconnect safely even when connected to energized systems, reducing the risk of arc flash or equipment damage.
• Durable, industrial-grade build: Built to withstand the rigors of daily use in busy facilities, delivering long-term reliability.

Ideal use cases — perfect for controlling and protecting three-phase motors and process lines in manufacturing, packaging, and material handling; serve as service disconnects for industrial machinery; and function as safe shutdown points in warehouses, energy facilities, and data centers.

For facilities prioritizing safety, reliability, and clear electrical isolation, the Square D H312NDS 3-Pole Fused Safety Switch offers a concrete, purpose-built solution. Pair it with your control panels and maintenance procedures to ensure predictable, safe shutdowns and streamlined lockout/tagout compliance.