Siemens JD23B350 350A 3-Pole 240 V Circuit Breaker Potential Transformer

Meet the Siemens JD23B350, a rugged three-pole circuit breaker engineered for demanding 240 V three‑phase power systems. With a 350 A current rating, this Siemens unit delivers reliable overcurrent protection for heavy feeders, motors, and critical loads in commercial and industrial environments. The part number JD23B350 guarantees precise compatibility within Siemens’ protection ecosystem, ensuring smooth integration with your existing panels and components.

Key specifications at a glance

• Current rating: 350 A
• Poles: 3
• Voltage rating: 240 V
• Part number: JD23B350

Why this breaker stands out

• Siemens engineering delivers consistent, predictable interruption performance, safeguarding wiring and connected equipment from dangerous overcurrent events.
• The three-pole configuration provides balanced protection across all phases, supporting stable, reliable power distribution in 3‑phase systems.
• Designed for durability in real-world environments, this breaker is well-suited for installation in commercial panel boards and industrial distribution networks, offering long service life and dependable operation.

Ideal use cases

• Feeder protection for manufacturing lines, conveyors, and heavy machinery that operate on 240 V three‑phase power.
• Main distribution panels in commercial facilities where dependable, trip-coordinated protection is essential for uptime and safety.
• Stocking spare breakers for service fleets or specifying parts for new builds where precise Siemens compatibility matters.

Practical considerations for installers

• Verify compatibility with your Siemens panel and protection scheme; confirm terminal connections and mounting requirements per local electrical codes.
• Leverage Siemens’ integrated protection ecosystem—this JD23B350 pairs seamlessly with other Siemens breakers, relays, and metering components to support coordinated protection strategies.

For professionals seeking a dependable, high‑current protection solution, the JD23B350 delivers peace of mind in every installation. It’s the right choice for engineers, electrical contractors, and facility managers who demand precise performance, straightforward sourcing, and long‑term reliability in 240 V, three‑phase environments.