Siemens 3NW7231 - 100A, 690V, 3-Pole, Switch

The Siemens 3NW7231 is a 3-pole, 100 A, 690 V fusible switch engineered for reliable on/off isolation and overcurrent protection in demanding industrial and commercial environments. Built to withstand tough conditions, this switch delivers decisive disconnect capability when you need it and dependable protection when you don’t.

Designed for situations where space is at a premium and uptime matters, the 3NW7231 offers a compact footprint without compromising performance. Its robust construction is purpose-built for panel installations, motor disconnects, and branch circuits, making it a versatile choice for control cabinets, switchgear assemblies, and process lines where a maintainable, fuse-protected switch is required.

Key benefits

• Precise 3-pole, 100 A, 690 V ratings for three-phase systems
• Integrated fusible switch for streamlined overcurrent protection and safe isolation
• Compact design that fits neatly into panelboards and control panels
• Reliable performance in both industrial and commercial applications
• Maintenance-friendly configuration that simplifies servicing and part replacement

Ideal use cases

• Motor disconnects in conveyors, pumps, fans, and other equipment
• Protection and isolation for panelboards serving critical loads
• Branch circuit protection where a simple, dependable disconnect is needed

Why choose the Siemens 3NW7231

With the 3NW7231, you’re selecting a trusted Siemens solution that prioritizes clear isolation, straightforward maintenance, and robust protection for demanding environments. It reduces the complexity of your electrical protection scheme by combining switching and fusing in a single, compact unit, helping to minimize downtime and simplify upgrades or replacements in existing panel layouts.

Practical considerations

• Ensure compatibility with your three-phase circuit design and panelboard arrangements
• Plan for straightforward maintenance access to facilitate quick inspections and fuse replacements
• Use as part of a well-structured protection strategy to safeguard motors and downstream equipment