Siemens SN-321 - 30A, 240V, Disconnect Switch

Meet the Siemens SN-321, a rugged 30A, 240V disconnect switch designed for dependable on/off isolation and overcurrent protection in demanding industrial and commercial environments. This compact fusible switch combines strong, field-serviceable construction with straightforward operation, making maintenance and service faster and safer.

• 40-amp? No—the SN-321 is a precise 30A, 240V disconnect solution that provides reliable isolation for medium-duty motor circuits and branch protection without overcomplicating your panel layout.
• Compact footprint tailored for tight control panels, motor control centers, and crowded electrical rooms where space is at a premium.
• Versatile application ideal for motor disconnects, panelboards, and branch circuit protection, helping you centralize control and protection in a single, maintainable device.
• Maintanance-friendly design engineered for quick field service, with accessible terminals and a straightforward disconnect/ reconnect process to minimize downtime.

Why choose the SN-321 for your facility?

• Clear isolation with proven reliability—protects personnel during servicing and safeguards equipment from overcurrent events.
• Easy integration supports standard 240V control circuits and fits seamlessly into existing electrical infrastructure without extensive rewiring.
• Specifically rated for 30A loads, making it a practical choice for motor-driven equipment, conveyors, pumps, and HVAC applications where reliable disconnect capability matters most.

Practical use cases to consider:

• Disconnecting motors in manufacturing lines or processing equipment for safe maintenance.
• Isolating branches on panelboards to simplify troubleshooting and system upgrades.
• Providing a dedicated, maintainable switch for control panels in commercial environments such as data centers, campuses, or large facilities.

In short, the Siemens SN-321 is a purpose-built, space-efficient disconnect switch that delivers dependable isolation and protection where you need it most. It’s the logical choice when you require a maintenance-friendly, 30A/240V solution that keeps your electrical system organized, safe, and ready for service.