Siemens 5SY63057 5A 3P 400V Circuit Breaker | AmpState

The Siemens 5SY63057 is a trusted 5A, 3-pole circuit breaker designed to safeguard panelboards, load centers, and electrical distribution networks. Built for three-phase systems operating up to 400V, it provides reliable protection by interrupting fault currents and preventing damage to wiring and equipment.

Designed for precise part-number matching, this model is ideal when exact compatibility matters—whether you’re stocking spare inventory, building new panels, or performing maintenance on existing Siemens installations. AmpState ensures authentic Siemens parts, making compatibility and long-term maintenance planning straightforward.

• Three-pole configuration ensures all conductors in a three-phase circuit trip together, delivering coordinated protection across the entire circuit.
• 5 A rating is well-suited for branch circuits with moderate operating loads, providing targeted protection without nuisance tripping.
• 400V compatibility aligns with common industrial and commercial distributions, helping you protect equipment in typical three-phase environments.
• Direct part-number match simplifies ordering, minimizes stocking confusion, and speeds up repairs or panel builds.
• Genuine Siemens hardware backed by AmpState’s support, so you can trust fit, function, and availability when you need it most.

This product is perfect for:

• Maintenance teams managing spare parts for Siemens-based installations
• Panel builders assembling new electrical distribution systems
• Spare inventories where a precise part number is essential to avoid misfits

How it helps you in practice

• Fast, reliable replacement in three-phase panels, reducing downtime during service calls or retrofits.
• Improved reliability in distribution rooms where consistent 400V three-phase protection is required.
• Clear, traceable part-numbering (5SY63057) simplifies asset management and future sourcing.

Technical snapshot

• Manufacturer: Siemens
• Part Number: 5SY63057
• Product Type: Circuit Breaker
• Amperage: 5 A
• Poles: 3
• Voltage: 400V

If you’re unsure about fit or compatibility, AmpState offers assistance to help confirm the right part for your specific panel or distribution system. Rely on the Siemens 5SY63057 for precise protection, straightforward stock management, and dependable performance in demanding electrical environments.