Siemens 3VA9243-0JB12 250A 3P Circuit Breaker | AmpState

Meet the Siemens 3VA9243-0JB12 — a rugged, OEM-grade 3-pole circuit breaker engineered for reliable circuit protection in panelboards, load centers, and electrical distribution systems. This 250 A device is designed for replacement projects and stocking spares, helping you keep your bill of materials aligned exactly to the original part number. Available from AmpState, your source for genuine Siemens components.

Why this Siemens 3VA9243-0JB12 stands out

• OEM compatibility — designed to match the original Siemens BOM, reducing the risk of incompatibility during replacements and upgrades.
• High-capacity protection — 250 A, 3-pole configuration supports heavy-load circuits and coordinated protection across multiple phases.
• Versatile deployment — suitable for panelboards, load centers, and other electrical distribution setups, making it a go-to choice for both new installs and refurbishments.
• Stock-ready for projects — a reliable spare that keeps maintenance schedules on track and minimizes downtime when a panel requires a like-for-like replacement.
• Direct sourcing — AmpState offers this exact part number (3VA9243-0JB12) with support to verify fit and compatibility for your specific panel or distribution assembly.

Ideal use cases and practical benefits

• Replacement projects where maintaining the original BOM is critical for UL listings and panel labeling.
• Spare parts kits for service vans or maintenance bays, ensuring quick outage recovery without altering protective coordination.
• Upgrades or expansions of Siemens-based electrical distribution where a like-for-like trip curve and electrical characteristics are essential.
• New installations that require a proven Siemens solution to protect feeders, subpanels, and distribution circuits.

Specifications at a glance

• Manufacturer: Siemens
• Part Number: 3VA9243-0JB12
• Product Type: Circuit Breaker
• Amperage: 250 A
• Poles: 3
• Applications: Panelboards, Load Centers, Electrical Distribution
• Availability: AmpState

Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit. By choosing this exact Siemens 3VA9243-0JB12, you’re opting for a reliable, OEM-aligned solution that supports consistent protection, streamlined maintenance, and peace of mind across your electrical infrastructure.