Siemens SN323 - 100A, 240V, 2-Pole, Fused Disconnect Switch

The Siemens SN323 is a rugged, two-pole fused disconnect switch engineered for safe and reliable electrical isolation in demanding industrial and commercial environments. With a 100A rating at 240V, it delivers decisive, under-load disconnection while supporting robust lockout/tagout procedures to protect maintenance personnel and equipment.

Why the SN323 stands out

• 100A current rating paired with 240V operation makes it an ideal fit for common industrial feeders and motor circuits, delivering clean, predictable isolation when you need it most.
• 2-pole design ensures both hot lines are interrupted, preventing partial energization and eliminating backfeed risks during maintenance.
• Fused protection in a single unit provides immediate fault current interruption, helping to shield downstream equipment and downstream circuits from damage.
• Durable, serviceable construction built for daily switching in busy environments, with replaceable fuses that simplify maintenance and keep downtime to a minimum.
• Lockout/Tagout friendly design supports compliant safety practices, making it straightforward to apply locks and safety tags during servicing.
• Simple integration fits neatly into standard electrical enclosures and control panels, with straightforward wiring and labeling to speed up installation and commissioning.

Ideal applications and use cases

Siemens SN323 is purpose-built for isolating critical circuits in manufacturing and commercial facilities. Use it to shut off motors, conveyors, and heavy power feeders, or to create safe service points within control panels and switchgear. It’s a dependable choice for equipment rooms, machine control stations, and process lines where reliable isolation under load is essential for safe maintenance and downtime planning.

How it works

When service is required, the SN323 provides a decisive, complete disconnect by opening both poles while the fused path interrupts current. To perform maintenance safely, apply a lock and tag to the switch handle to prevent re-energization, verify absence of voltage, and proceed with work. After service, restore connections, replace fuses as needed, re-close the switch, and remove the lock only when the area is clear and safe.

Specifications

• Brand: Siemens
• Model: SN323
• Product Type: Fused Disconnect Switch
• Amperage Rating: 100A
• Voltage Rating: 240V
• Number of Poles: 2-Pole

With the Siemens SN323, you gain a purpose-built solution that combines precise electrical isolation, enhanced safety through lockout/tagout compatibility, and durable performance designed for everyday industrial demands. It’s a confident choice for engineers and safety teams prioritizing reliable, maintainable power control.