Siemens S3042B3100 100A Circuit Breaker, NEMA 1 | AmpState

Siemens S3042B3100 100A Circuit Breaker is a reliable protection device for panelboards, load centers, and electrical distribution systems. With a NEMA 1 designation, it’s built for indoor, dry environments and straightforward installation in standard electrical spaces.

Designed with retrofit work and maintenance planning in mind, this exact part number (S3042B3100) helps you keep inventory neat and documentation precise. When your project requires a consistent, easy-to-reference part number, this Siemens breaker is a dependable choice.

• Amp rating: 100 A for dependable protection of critical branch circuits
• Enclosure rating: NEMA 1 for indoor, dry-location service
• Part number consistency: S3042B3100 ensures compatibility and simplifies procurement during retrofit or maintenance
• Application versatility: Suitable for panelboards, load centers, and general electrical distribution systems
• Availability and support: Available from AmpState with expert help to confirm fit and compatibility

Practical use cases

• Retrofit projects where you must replace aging breakers without altering documentation or panel labeling
• Spare part planning for facilities that rely on Siemens equipment and need quick, predictable replacements
• Maintenance scheduling that benefits from a stable, cataloged part number for service records

Why choose this Siemens S3042B3100 over generic options? Its design aligns with Siemens panelboards and load centers, delivering predictable performance, reliable protection, and procurement simplicity through a fixed part number. If you’re unsure about fit, send us a message—AmpState can help confirm compatibility and ensure you get the right component for your system.