Siemens NGB3B030 30A 3P Circuit Breaker, Bolt-On | AmpState

Siemens NGB3B030 is a 3-pole, 30-amp bolt-on circuit breaker designed for dependable protection in panelboards, load centers, and electrical distribution systems.

Engineered to align with your original BOM and Siemens part number, the NGB3B030 is the smart choice for replacement projects and stocking spares. If you’re maintaining multiple facilities or updating service inventories, this breaker keeps procurement streamlined and consistent with the equipment you already own.

Key features that matter in the field

• Three-pole, 30 A rating enables reliable protection for multi-wire circuits and essential feeders.
• Bolt-on mounting provides secure, straightforward installation in compatible Siemens panelboards and distribution gear.
• Part Number: NGB3B030 ensures exact replacement in systems configured for Siemens bolt-on breakers.
• Manufacturer: Siemens brings consistent performance and compatibility with Siemens protection schemes.
• Availability through AmpState to simplify sourcing, stocking, and BOM maintenance for ongoing projects.

Why this breaker is a smart choice

For facilities teams and electrical contractors, this breaker delivers a practical balance of reliability and ease of use. Its bolt-on design reduces installation time on classic Siemens panelboards, helping you minimize downtime during service windows. Because it’s designed to match the original BOM, it simplifies purchasing across multiple sites and ensures your spare stock remains aligned with the equipment in service.

Ideal use cases

• Replacement of failed or aging 3-pole breakers in Siemens panelboards and load centers without changing the protective scheme.
• Maintaining an organized spare parts inventory that corresponds to the original equipment BOM and part numbers.
• Upgrading or servicing electrical distributions in commercial or industrial facilities where 3P, 30 A protection is required.

Pro tip for procurement and compatibility

AmpState makes it straightforward to source the NGB3B030 and confirm fit for your specific panel or distribution setup. If you’re unsure about compatibility with a particular installation, our team can assist in validating that the bolt-on design and 3-pole 30 A specifications match your equipment and protection plan.