Siemens VMS365B - 400A, 600V, 3-Pole, Fused Disconnect Switch

The Siemens VMS365B is a high-performance fused disconnect switch engineered for safe, reliable electrical isolation in demanding industrial and commercial environments. With a robust 400A current rating, a 600V maximum voltage, and a 3-pole design, this device delivers dependable disconnection under load and supports rigorous lockout/tagout procedures to keep maintenance teams protected.

Why the VMS365B stands out

• Integrated fused protection: The fused disconnect configuration provides immediate overcurrent protection, helping to contain faults and protect downstream equipment without requiring separate components.
• Complete isolation with a 3-pole design: All three conductors are reliably disconnected, reducing arc flash risk and ensuring clear, predictable de-energization during service or repair.
• High-capacity performance: 400A continuous rating supports large feeders and demanding load profiles, making it suitable for heavy machinery, motors, and distribution circuits.
• Broad voltage handling: Rated up to 600V, it accommodates a wide range of industrial power systems while maintaining safe operation.
• Maintenance-ready safety: Built to work with standard lockout/tagout practices, helping facilities meet safety requirements during servicing and inspections.
• Durable for long-term use: Designed to withstand the rigors of busy commercial and industrial environments, delivering reliable performance over time.

Ideal use cases

• Main feeder isolation for manufacturing lines and heavy equipment
• Stand-alone safety interlock points in electrical rooms and service panels
• Emergency shutdown or routine maintenance stations where dependable disconnection is critical

Specifications at a glance

• Amperage rating: 400A
• Voltage rating: 600V
• Poles: 3-Pole
• Product type: Fused Disconnect Switch
• Brand: Siemens
• Model: VMS365B

Designed for professionals who demand dependable isolation, easy maintenance, and a clear path to safe operations, the Siemens VMS365B fused disconnect switch provides a trusted solution for protecting people, equipment, and processes in challenging electrical environments.