Siemens JXD63B400 400A 3P 600V Circuit Breaker | AmpState

Meet the Siemens JXD63B400—an all‑purpose 400 A, 3‑pole, 600 V circuit breaker designed to protect panelboards, load centers, and electrical distribution networks. This direct part‑number match is a smart choice for teams that value precise fit and reliable protection when swapping or stocking spares.

Key specifications at a glance

• Manufacturer: Siemens
• Part Number: JXD63B400
• Product Type: Circuit Breaker
• Ampere Rating: 400 A
• Poles: 3
• Voltage: 600 V
• Availability: AmpState

Why this model stands out

• The JXD63B400 is ideal when your project, maintenance schedule, or spare inventory hinges on precise Siemens specifications to prevent fit issues and downtime.
• High-current protection in compact, three‑pole form: With a 400 A rating and 3 poles, it provides robust protection for multi‑phase circuits in commercial or industrial panels.
• 600 V capability: Suitable for demanding electrical distribution environments where higher voltage protection is required.
• Trusted Siemens reliability: Built for panelboards and load centers that rely on consistent performance and predictable trip characteristics.

Ideal use cases

• Maintenance and refurbishment projects where panel replacements must match the exact part number for uninterrupted compatibility.
• Panel builders stocking spare inventory to shorten downtime on installation or retrofit jobs.
• Electrical distribution upgrades in facilities that operate at 600 V with multi‑phase circuits.
• Replacements in commercial or light industrial systems that require a 3P protection solution with a 400 A rating.

How it integrates and what to check

This Siemens circuit breaker is designed for use in panelboards and load centers as part of a broader electrical distribution strategy. If you’re unsure about fit, AmpState offers support to confirm compatibility—simply reach out and we’ll help verify the match to your equipment and panel rating.

Practical tips for procurement and maintenance

• Keep JXD63B400 on hand as a dependable spare for quick replacements in critical distribution paths.
• Document the part number (JXD63B400) in your asset registry to streamline future maintenance and audits.
• When ordering, double‑check the panel’s voltage and current requirements to ensure full compatibility with your installation.
• Store in a clean, dry environment to preserve contact integrity and performance over time.

Ready for reliable, precise protection in your Siemens‑designed electrical system? The JXD63B400 from AmpState delivers a straightforward, compatible solution for high‑demand panelboards and distribution applications. If you need help confirming fit or pairing with other components, send a message and our team will assist with compatibility checks and placement guidance.