Siemens NXD63B900 900A 3P 600V Circuit Breaker, Bolt-On | AmpState

Meet the Siemens NXD63B900 — a purpose-built circuit breaker engineered for robust protection in panelboards, load centers, and broader electrical distribution networks. With a 900 A rating, 3 poles, and a 600 V operating envelope, this bolt-on unit is designed for demanding industrial and commercial applications where precise part-number matching matters. Available from AmpState, the NXD63B900 is the exact replacement you need when reliability and compatibility are non-negotiable.

Who benefits: maintenance teams, panel builders, and spare-inventory planners who require a direct part-number match to minimize downtime and sourcing errors. The bolt-on design enables straightforward installation in compatible enclosures, helping you complete service or upgrade projects more efficiently.

• Direct part-number match: simplifies sourcing and inventory management by ensuring this is the exact Siemens NXD63B900 you need.
• Bolt-on mounting: enables quick, tool-friendly installation in suitable panelboards and load centers without specialized adapters.
• High-capacity protection: 900 A rating across 3 poles provides reliable protection for large circuits and distribution feeders.
• Versatile electrical distribution: suitable for panelboards, load centers, and broader distribution networks in commercial and light-industrial settings.
• Trusted Siemens quality: built to endure demanding environments and deliver consistent, dependable performance.

Not sure this is the exact fit for your equipment? AmpState offers support to confirm compatibility with your panel, enclosure, or distribution setup. Just reach out and we’ll help verify the fit.

Specifications at a glance:

• Manufacturer: Siemens
• Part number: NXD63B900
• Product type: Circuit Breaker
• Amperage: 900 A
• Poles: 3
• Voltage: 600 V
• Mounting: Bolt-On

Availability is with AmpState, and this part is ideal for spare inventory, planned replacements, or ongoing maintenance programs where exact part-number fidelity matters. If you’re upgrading or stocking critical infrastructure, the Siemens NXD63B900 offers the certainty and performance your electrical distribution system relies on. Order today and ensure you have the precise protection your panels require, with expert support to confirm fit if needed.