Siemens FXD63B225 - 225 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Designed for dependable protection in panelboards and load centers, the Siemens FXD63B225 is a 225 A, 600 V, 3-pole bolt-on molded case circuit breaker built to handle the demands of residential, commercial, and light industrial electrical systems. This unit delivers both overcurrent and short-circuit protection with precision, ensuring safe, reliable operation where it matters most.

• Secure bolt-on mounting: Delivers a rigid, vibration-resistant bus connection for steady electrical performance in challenging environments.
• Thermal-magnetic trip unit: Combines thermal and magnetic trip elements to provide stable, repeatable protection against both overloads and short circuits, reducing nuisance trips.
• 3-pole configuration: Suitable for 3-phase circuits, making it ideal for commercial and light industrial panelboards and load centers.
• 225 A, 600 V rating: Supports high-load feeder protection with compatibility for mid- to high-voltage electrical systems commonly found in today’s installations.
• OEM-ready compatibility: Designed to integrate with matching Siemens OEM load centers and panelboards, simplifying replacement and upgrade projects.
• Versatile applications: Perfect for protecting branch circuits in homes, small offices, retail spaces, and light industrial equipment where reliable fault protection is essential.
• Trustworthy Siemens engineering: Built to meet rigorous electrical standards, ensuring long-term performance and compatibility within Siemens’ family of protection devices.

Use scenarios and benefits:

• Replacing a failed breaker in a Siemens panelboard or load center with a like-for-like part (FXD63B225) ensures continuation of original protection characteristics and coordination.
• Installing in 3-phase service panels to safeguard heavy loads and machinery while maintaining solid bus connections and minimal vibration-induced wear.
• Upgrading feeders and distribution circuits in commercial spaces where high-amperage protection is required without compromising panel compatibility.

Technical snapshot

• Manufacturer: Siemens
• Part Number: FXD63B225
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 225 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Tips for best results: verify panelboard compatibility and confirm voltage and current requirements before replacement. Ensure proper torque and secure mounting according to OEM installation guidance to preserve the integrity of the bus connection and protection scheme. When in doubt, consult a licensed electrician to plan a safe, compliant installation that keeps your electrical system protected and running smoothly.