Siemens NGB3B015B 15A 3P Circuit Breaker, Bolt-On | AmpState

Meet the Siemens NGB3B015B 15A 3P Circuit Breaker, Bolt-On—built for everyday electrical work, it shields panelboards, load centers, and distribution systems from overloads with reliable, precise protection. This 3-pole, bolt-on design delivers a robust, maintenance-friendly solution for commercial and industrial panels.

Why choose the Siemens NGB3B015B bolt-on 3P breaker?

• Secure bolt-on mounting for dependable connections in demanding panel installations.
• Three-pole configuration (3P) provides simultaneous protection across three conductors, ideal for 3-phase systems or multi-wire circuits.
• 15 A rating delivers targeted protection for circuits that require higher current control without sacrificing reliability.
• Direct part-number match (NGB3B015B) simplifies procurement and stocking, reducing the risk of mismatched replacements.
• Designed for panelboards, load centers, and electrical distribution—works across Siemens-compatible enclosures and layouts.

Who benefits

This breaker is a smart pick for maintenance teams, panel builders, and spare-inventory managers who need a reliable, fast-fit component that aligns with a direct part-number match. If your project requires Siemens-branded protection with bolt-on mounting, this unit fits the bill.

Key specifications at a glance

• Manufacturer: Siemens
• Part Number: NGB3B015B
• Product Type: Circuit Breaker
• Amperage: 15 A
• Poles: 3
• Mounting: Bolt-On
• Applications: Panelboards, Load Centers, Electrical Distribution

Compatibility and support

Available from AmpState. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.

Practical tips for selection and installation

When selecting a replacement, ensure your panelboard or load center supports bolt-on breakers and 3-pole configurations. The Siemens NGB3B015B is designed to integrate into Siemens-based distributions, delivering consistent performance and straightforward maintenance. Keep a spare on hand to minimize downtime during panel upgrades or routine servicing.