Siemens JXD22B350 - 350 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

The Siemens JXD22B350 is a robust 350A, 240V, 2-pole bolt-on molded case circuit breaker engineered to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built for reliability in demanding environments, this unit combines a solid mechanical mount with precise electrical protection to keep systems running smoothly.

• Secure bolt-on mounting: Creates a rigid, vibration-resistant bus connection that stays aligned even in installations subject to movement or vibration, reducing connection wear and nuisance trips.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection by responding accurately to both gradual overloads and sudden short circuits, helping to prevent damage to downstream equipment.
• OEM-compatible design: Specifically engineered to be compatible with matching Siemens OEM loadcenters and panelboards, ensuring seamless integration and reliable performance.
• High current capability: With a 350A rating, it is well-suited for feeders and large branch circuits in residential, commercial, and light industrial applications.
• Versatile application: Ideal for service panel subpanels, main distribution panels, and equipment racks where robust protection is essential.

Why choose the Siemens JXD22B350 for your electrical protection needs

When your installation requires trustworthy, long-lasting protection for high-demand circuits, the JXD22B350 delivers. The bolt-on design minimizes loosening from vibratory forces, while the thermal-magnetic trip unit ensures precise response without nuisance trips. Its compatibility with Siemens OEM loadcenters makes it a straightforward, plug-and-play upgrade or replacement in compatible systems.

Key specifications at a glance

• Amperage rating: 350A
• Voltage: 240V
• Poles: 2
• Mounting style: Bolt-on
• Type: Thermal-magnetic molded case circuit breaker
• Manufacturer: Siemens
• Part number: JXD22B350
• Application: Branch circuit overcurrent and short-circuit protection

Practical installation and use cases

• Residential subpanels requiring reliable 350A protection for large branch circuits or feeder lines.
• Commercial panelboards needing robust protection in main distribution or subfeed roles.
• Light industrial panels where vibration resistance and strong bus connections are critical for long-term reliability.

Choose the Siemens JXD22B350 when you need a high-capacity, dependable bolt-on circuit breaker that integrates seamlessly with compatible panelboards and loadcenters, delivering clear protection where it matters most.