Siemens 5SY63047 4A 3P 400V Circuit Breaker | AmpState

Siemens 5SY63047 is a purpose-built 3-pole circuit breaker designed to protect panelboards, load centers, and electrical distribution networks with dependable overcurrent protection. This 4 A, 400 V unit is the exact choice for replacement projects and stocking spares when it’s essential to keep your bill of materials (BOM) aligned to the original part number.

• Manufacturer: Siemens
• Part Number: 5SY63047
• Product Type: Circuit Breaker
• Amperage: 4 A
• Poles: 3
• Voltage Rating: 400 V
• Applications: Panelboards, Load Centers, Electrical Distribution
• Ideal For: Replacement projects, stocking spares to maintain BOM fidelity

The 5SY63047 delivers reliable, coordinated protection for three-phase systems, ensuring safe operation of downstream equipment while minimizing nuisance tripping in normal load conditions. Its 400 V rating makes it suitable for a wide range of commercial and light industrial installations, allowing you to protect feeders, motors, and control circuits with a single, compatible device.

Why this Siemens model stands out:

• Exact form, dependable fit: Engineered to match the original Siemens specification, so installation is straightforward and downtime is minimized.
• BOM alignment made easy: Keeps your parts list consistent with the original design, reducing procurement confusion and compatibility risk.
• 3-pole protection for balanced loads: Ideal for 3-phase distribution systems, ensuring synchronized protection across all phases.
• Versatile compatibility: Suits panelboards and load centers commonly deployed in commercial and light industrial settings.

Who benefits most? Maintenance teams, facility managers, and electrical contractors who value reliability, quick swaps during retrofits, and BOM integrity. Whether you’re upgrading an aging panel or stocking spares for critical infrastructure, the Siemens 5SY63047 helps you keep systems protected without guesswork.

How to think about compatibility: If your project requires a three-phase, 400 V circuit breaker with a 4 A rating and Siemens form factor, this part fits the bill. It’s designed to slot into Siemens panelboards and distribution equipment that reference the 5SY6 family, preserving electrical protection coordination and ease of replacement.

Need help confirming fit or matching a part number? AmpState offers guidance to ensure you’re selecting the right device for your specific installation. Message us and we’ll help you confirm compatibility and placement for the Siemens 5SY63047.