Siemens JXD23B225 - 225 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens JXD23B225, a 225-amp, 240-volt, 3-pole bolt-on molded case circuit breaker engineered for reliable branch circuit protection in panelboards and loadcenters. Built to withstand vibration and deliver repeatable protection, this unit combines a secure bolt-on mounting with a precise thermal-magnetic trip system, making it a dependable choice for demanding electrical installations.

Key features that set it apart

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection that stays tight over time.
• Thermal-magnetic trip unit delivers stable, repeatable protection against overcurrent and short circuits, helping protect connected equipment.
• OEM-compatible design ready to pair with matching Siemens panelboards and loadcenters for seamless integration.
• Three-pole configuration ideal for three-phase circuits in commercial and light industrial environments, while still suitable for advanced residential applications.
• High-current capability 225A rating at 240V to support larger branch circuits without compromising protection.

Technical specifications at a glance

• Manufacturer: Siemens
• Part Number: JXD23B225
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 225A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal uses and practical value

• Residential, commercial, and light industrial applications where reliable three-phase protection is required or high-current branch circuits need robust protection.
• Upgrading or replacing aging breakers in panelboards and loadcenters that rely on a secure bolt-on connection for long-term bus integrity.
• New installations where OEM compatibility ensures smooth service through a single-source replacement.
• Situations demanding predictable trip behavior under varying load conditions, thanks to the thermal-magnetic trip mechanism.

Why choose this Siemens breaker

The JXD23B225 is more than a high-current breaker — it’s a deliberate design for durability and reliability in real-world panel systems. The bolt-on mounting minimizes movement and vibration, preserving a solid bus connection year after year. The integrated thermal-magnetic trip unit provides consistent protection against both sustained overloads and sudden short circuits, reducing the risk of nuisance trips while safeguarding connected equipment. When paired with matching Siemens panelboards or loadcenters, it delivers a cohesive, dependable protection solution across residential, commercial, and light industrial installations.

Installation and compatibility notes

Ensure you’re selecting a unit that matches your OEM loadcenter or panelboard to maintain full protection and compatibility. This 3-pole, 225A, 240V breaker is designed for bolt-on mounting, offering a rugged, serviceable option for panels that require a secure connection and reliable protection of multi-wire branch circuits.