Siemens B320 20A 3P 240V Circuit Breaker, Bolt-On | AmpState

The Siemens B320 20A 3P 240V Bolt-On Circuit Breaker is built for dependable, everyday electrical protection in panelboards, load centers, and centralized distribution systems. Designed for professionals who value precise part matching, this breaker delivers a secure, reliable solution where a direct part-number match matters most.

Why the Siemens B320 stands out

• Bolt-On mounting provides a robust, vibration-resistant connection ideal for traditional Siemens panelboards and distribution setups, reducing the risk of loose connections during service operations.
• Three-pole design protects three-phase circuits, making it a smart choice for commercial and industrial power distribution and motor-driven loads.
• 20 amp per pole with a 240V rating supports common three-phase equipment and branch circuits without oversizing or underserving protections.
• Direct part-number match ensures seamless compatibility with Siemens panelboards and load centers, simplifying inventory management and service replacements.
• Versatile coverage is suitable for panelboards, load centers, and electrical distribution setups, making it a dependable choice for maintenance teams, panel builders, and spare inventories.
• Availability through AmpState offers a reliable source for sourcing the B320 when exact fit is required, helping you minimize downtime and ensure fast replacements.

Ideal for maintenance technicians, electrical contractors, and building operations teams, the B320 delivers predictable protection where three-phase power is a staple. Its bolt-on design, combined with Siemens engineering, translates to quicker installations, fewer compatibility headaches, and a safer, more secure electrical distribution network.

Usage scenarios include retrofit projects in commercial facilities, new panel builds in light-industrial settings, and service upgrades where a precise Siemens part-number match accelerates procurement. If you’re evaluating options, consider how a bolt-on 3P 240V solution like the B320 can streamline spare-part inventories and shorten downtime during routine maintenance or fault isolation.

To confirm fit, reference your panel model’s acceptance of bolt-on breakers and verify that a B320 20A 3P 240V configuration aligns with your distribution needs. If you need help verifying compatibility, AmpState is ready to assist in confirming the correct fit for your specific panel and project requirements.