Siemens B350 50A 3P 240V Circuit Breaker, Bolt-On | AmpState

Meet the Siemens B350 50A 3P 240V Bolt-On Circuit Breaker — a dependable safeguard for panelboards, load centers, and electrical distribution systems. Designed for retrofit work and maintenance planning, this bolt-on breaker lets you keep the exact part number when updating or expanding your electrical infrastructure, reducing downtime and confusion on the job site.

Key benefits that matter in real-world installs

• 50 A protection for demanding circuits, with a three-pole design for comprehensive three-phase applications.
• 240V operating voltage to match standard commercial and industrial power distribution.
• Bolt-On mounting for fast, secure installation and straightforward field service, especially during retrofits where enclosure compatibility matters.
• Manufactured by Siemens with a proven track record in reliability and consistent performance across distribution systems.
• Part number B350 ensures seamless replacement in established panels and critical maintenance cycles.

Why this model stands out in the field

Unlike generic substitutes, the B350 is purpose-built for panelboards and load centers that rely on a fixed part number for compatibility during repairs and upgrades. The bolt-on design minimizes the need for reconfiguring mounting hardware, helping technicians complete service tasks faster and with less downtime. Its three-pole, 240V framing supports balanced protection across all phases, which is essential for safe and reliable electrical distribution in commercial and industrial environments.

Ideal use cases

• Retrofit projects where maintaining the exact part number (B350) is critical to compatibility with existing enclosures and bus assemblies.
• Scheduled maintenance in panelboards and distribution centers that require dependable, consistent overcurrent protection.
• New installations within three-phase, 240V systems needing proven Siemens performance and a straightforward bolt-on mounting approach.

Availability, compatibility, and support

This B350 50A 3P 240V Bolt-On Circuit Breaker is available from AmpState. If you’re unsure about fit or compatibility, we’re here to help. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.

When planning your installation, consider how the bolt-on design supports quick field changes, the importance of keeping a consistent part number for long-term maintenance, and how a reliable 50 A, 3-pole, 240V breaker can improve overall circuit protection and system uptime.