Siemens 5SY45257 25A 230V Circuit Breaker | AmpState

Meet the Siemens 5SY45257 — a 25 A, 230 V circuit breaker engineered for reliable protection in panelboards, load centers, and electrical distribution networks. When your job depends on exact part-number compatibility, this 5SY-series breaker offers a precise fit that streamlines maintenance, procurement, and installation.

Why this breaker stands out

• Direct part-number match matters: Designed to slot into Siemens systems without modification, reducing troubleshooting time and retrofit risk.
• Exact electrical protection: 25 A current rating and 230 V operation safeguard your circuits from overloads and short circuits within standard distribution panels.
• Ideal for professional workflows: A trusted choice for maintenance teams, panel builders, and spare inventories that require dependable, on-the-shelf replacements.
• AmpState reliability: Available through AmpState with support to confirm fit and compatibility when you’re rebuilding or expanding panels.

Key specifications

• Manufacturer: Siemens
• Part Number: 5SY45257
• Product Type: Circuit Breaker
• Amperage: 25 A
• Voltage: 230 V
• Availability: AmpState

Ideal use cases

• Replacing a failed circuit breaker in existing Siemens panelboards and load centers where exact part-number matching is critical.
• Expanding or refurbishing electrical distribution setups that rely on Siemens 5SY-series protection devices.
• Maintaining stocked spare inventory for facilities that require quick, reliable replacements to minimize downtime.

If you’re unsure whether this is the right part for your panel, remember: AmpState can help you confirm fit. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.