Siemens SN424 - 200A, 240V, 3-Pole, Fused Disconnect Switch

The Siemens SN424 is a rugged 200A, 240V fused disconnect switch crafted for demanding industrial and commercial environments where safe, reliable electrical isolation is non-negotiable. Engineered to support lockout/tagout procedures and deliver dependable disconnection under load, this three‑pole disconnect is built for durability and peace of mind on long-term power distribution tasks.

Key features that set the SN424 apart

• Powerful 200A rating: Handles substantial feeder currents in busy electrical rooms and equipment bays without compromising safety.
• Three-pole design: Provides full isolation across all conductors in a 240V system, ensuring complete control during maintenance and de-energization.
• Fused protection: The fused disconnect configuration adds a layer of overcurrent protection to interrupt fault currents quickly and reliably.
• Lockout/Tagout compatibility: Designed to support standard safety procedures, helping teams lock out energy sources and tag the status of the switch during servicing.
• Durable, mission-critical construction: Built for long-term durability in environments where reliability matters most.

Why this makes sense for your operation

When you’re managing power distribution, quick and safe isolation is essential. The SN424 delivers intentional, predictable performance under load, reducing downtime and helping maintenance teams work more efficiently. Its fused design means fault currents are addressed at the source, minimizing risk to personnel and downstream equipment. By enabling robust lockout/tagout workflows, it supports regulatory compliance and safer work practices in busy electrical rooms, motor control centers, and commercial utilities.

Ideal use cases

• Industrial workplaces with heavy feeders and three-phase equipment
• Maintenance and service shutdowns requiring clear energy isolation
• Electrical rooms, switchgear housings, and distribution panels
• Motor control centers where reliable, prompt disconnection is critical

Specifications at a glance

• 200 A
• Voltage Rating: 240 V
• Number of Poles: 3-Pole
• Product Type: Fused Disconnect Switch
• Brand: Siemens
• Model: SN424

Choose the Siemens SN424 when you need a trusted, purpose-built fused disconnect that combines robust protection, safe operation, and practical compatibility with lockout/tagout protocols. It’s an efficient, reliable solution for safeguarding people and equipment in demanding electrical environments.