Siemens 5SY63017 1A 3P 400V Circuit Breaker | AmpState

Meet the Siemens 5SY63017 — a precise three‑pole, 1 A, 400 V circuit breaker engineered to protect your electrical distribution with confidence. Designed for panelboards, load centers, and control panels, this unit is built to drop into your existing Siemens system without compromising performance or safety.

Why this specific 5SY63017 matters for your project

• Exact BOM compatibility: A faithful replacement that keeps your original part number and documentation intact, ensuring seamless procurement and maintenance records.
• 3-pole protection for 3-phase systems: Ideal for commercial and industrial networks that rely on balanced 3‑phase distribution at 400 V.
• Low-current protection: With a 1 A rating, it’s suited for circuits that require precise, low-amperage protection without unnecessary tripping.
• Reliable Siemens engineering: Backed by Siemens’ standards for performance, safety, and compatibility across Siemens panelboards and accessories.
• Ready for replacement or spares: A practical choice for stocking to keep your BOM aligned and downtime minimal during maintenance windows.

Practical use cases

• Replacement projects in existing Siemens installations where the original 5SY63017 is specified
• Spare inventory for factories, data centers, and commercial facilities that require fast, reliable protection on 3‑phase circuits
• OEM or retrofit projects where maintaining exact part numbers guarantees compatibility with existing accessories and trip curves

Specifications at a glance

• Manufacturer: Siemens
• Part number: 5SY63017
• Product type: Circuit Breaker
• Amperage: 1 A
• Poles: 3
• Voltage: 400 V
• Availability: AmpState

How this choice supports your project goals

Choosing the 5SY63017 means you’re prioritizing reliability and compatibility. Its exact fit for Siemens panelboards protects sensitive 3‑phase circuits without altering your protection scheme. By stocking this precise part, you minimize substitution risk, keep maintenance records clean, and reduce downtime when parts are needed quickly. This is especially valuable for facilities managers, electrical contractors, and OEMs who rely on predictable, repeatable installations.

Installation tips and considerations

As with any electrical protection device, follow best practices for safety and performance. Ensure the replacement matches the original amperage, number of poles, and voltage. Before installation, power down the system, verify compatibility with your panelboard, and torque connections to the manufacturer’s specifications. If you’re unsure about fit, AmpState offers support to confirm compatibility with your configuration.

Ready to secure the right part?

Order the Siemens 5SY63017 with confidence from AmpState. If you need help confirming fit against your BOM or panel specification, reach out — we’re ready to assist in ensuring this exact part is the correct match for your electrical distribution needs. Add to cart and keep your electrical system protected with a drop‑in, OEM‑aligned solution.