Siemens Q350 50A 3P 240V Circuit Breaker, Plug-On | AmpState

Meet the Siemens Q350 — a 50A, 3-pole, 240V plug-on circuit breaker designed for dependable protection in panelboards, load centers, and broader electrical distribution systems. This part is ideal for replacement projects and spare stock when keeping the BOM aligned to the original part number matters, ensuring seamless service continuity and easier procurement.

• Plug-on installation for quick, secure seating on the bus bar in compatible Siemens panels
• Three-pole configuration to reliably protect 240V multiwire circuits
• 50 A rated circuit protection to guard feeders and branch circuits against overloads
• Part number Q350 helps you maintain exact BOM alignment for replacements and service parts
• AmpState availability, a trusted source for Siemens electrical components
• Designed for use in panelboards, load centers, and distributed electrical systems

Practical use cases

• Replacing a failed or worn breaker in existing Siemens installations without changing the overall panel architecture
• Maintaining spare inventory that matches the original BOM to streamline maintenance and service calls
• Implementing a 50A 3P 240V protection scheme in new or upgraded electrical distribution layouts
• Quick response in field service scenarios where compatibility and fast replacement are critical

Compatibility and support

Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit, ensuring you get the right breaker for your Siemens panel or distribution setup.