Siemens LXD63B500 - 500 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens LXD63B500 — a 500 A, 480 V, 3-pole bolt-on molded case circuit breaker designed to protect your panelboards and loadcenters with precision and reliability. Available from AmpState, this unit is built to handle the demands of busy electrical spaces while keeping your distribution system safe and compliant.

Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, reducing movement that can cause arcing or loose contacts over time. In environments with equipment vibration or frequent door closures, this robust mounting helps maintain consistent protection and quiet operation.

The thermal-magnetic trip unit delivers stable, repeatable protection: the thermal element manages gradual overloads to protect conductors, while the magnetic element delivers fast interruption during short-circuit events. That means tighter protection for wiring, devices, and downstream equipment, with fewer nuisance trips during normal surge conditions.

Designed to be compatible with matching Siemens OEM loadcenters and panelboards, this breaker ensures proper fit, reliable bus stabs, and straightforward integration into your existing electrical infrastructure. It’s a dependable choice when standardizing protective devices across multiple panels or upgrading legacy setups.

Ideal for residential, commercial, and light industrial applications—whether you’re configuring a main feeder in a service panel, protecting subpanels in a commercial space, or upgrading a distribution network in a light industrial facility. The LXD63B500 handles large feeders and critical circuits with confidence, helping you maintain safe, continuous operation.

• Manufacturer: Siemens
• Part number: LXD63B500
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 500 A
• Voltage rating: 480 V
• Number of poles: 3
• Mounting style: Bolt-on

Choosing this unit means investing in a rugged protection device that aligns with Siemens’ design standards and your panel’s mounting footprint, reducing installation complexity and promoting long-term reliability. The bolt-on approach also simplifies future service or panel upgrades, making it easier to maintain high availability in critical electrical systems.

Ready to upgrade your distribution protection? Order the Siemens LXD63B500 from AmpState today and secure a dependable, high-capacity solution for 480 V systems.