Siemens 5SY4120-7 - 20A, 1-Pole, Circuit Breaker

Siemens 5SY4120-7 is a robust 20A, 1-pole circuit breaker engineered to deliver dependable overcurrent protection where it matters most. Its compact single-pole design is purpose-built for flexible integration into panelboards, switchboards, and control panels, making it an ideal fit for a wide range of electrical installations.

Key specifications

• Current rating: 20 A
• Poles: 1-Pole
• Breaker type: Circuit Breaker

This model is specifically suited for industrial, commercial, and OEM applications where reliable protection and safe operation in distribution panels and motor control centers are essential. The 5SY4120-7 is built to interrupt fault currents effectively, guarding circuits and connected equipment from damage due to overcurrent events.

Why choose this Siemens 5SY4120-7

• Targeted single-phase protection: The 1-pole configuration focuses protection on individual circuits, enabling precise control within complex panel layouts.
• Versatile integration: Designed for easy installation in panelboards, switchboards, and control panels, supporting streamlined electrical design and maintenance.
• Reliable protection for critical infrastructure: Ideal for distribution panels and motor control centers where downtime isn’t an option and consistent performance matters.

Ideal applications and use cases

• Industrial facilities upgrading control panels or distribution gear
• Commercial electrical rooms needing dependable single-pole protection for individual circuits
• OEM projects requiring a compact, reliable 20A circuit breaker for modular panel assemblies
• Motor control centers where precise overcurrent protection helps minimize equipment risk

Practical considerations

When selecting the Siemens 5SY4120-7, confirm that the circuit’s current draw aligns with the 20A rating and that the panel design accommodates a single-pole device. This breaker is designed to support safe, efficient operation in distribution panels and control environments where dependable protection translates to reduced downtime and longer equipment life.