Siemens 5SY4211-7 Circuit Breaker, 5A, 2-Pole, 400V

The Siemens 5SY4211-7 Circuit Breaker delivers dependable overcurrent protection for industrial electrical service, maintenance, and replacement projects. With a 5 A rating and a two-pole design, it safeguards both conductors in a 400 V system, helping prevent damage from overloads and short circuits in demanding environments.

Designed for Siemens installations and compatible with the 5SY series, this breaker is a practical, field-ready solution when you need reliable, plug-in protection for control panels, machine tools, and industrial distribution points. Its robust construction and Siemens engineering translate to predictable performance under pressure, reducing downtime and easing maintenance schedules.

Specifications at a glance

• Amperage: 5 A
• Poles: 2
• Voltage: 400 V
• Part number: 5SY4211-7
• Manufacturer: Siemens

Why this Siemens 5SY4211-7 stands out

This model is tailored for industrial contexts where precise current protection and reliable trip characteristics matter. By using the exact part number (5SY4211-7), you ensure compatibility with Siemens equipment and systems designed for 400 V circuits, making it a trusted upgrade or replacement in service, maintenance, and OEM applications.

Ideal use cases

• Protection in industrial control panels and machine tool circuits
• Replacement in existing Siemens installations to minimize downtime
• Integration into distribution boards where a compact, two-pole unit is preferred

Notes: Verify fit by part number and application requirements. Need help matching a part number or confirming compatibility? Message us and we'll help.