Siemens LXD63B450L - 450 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Siemens LXD63B450L is a robust 3-pole bolt-on molded case circuit breaker engineered for reliable branch circuit overcurrent and short-circuit protection in panelboards and load centers. With a 450A rating and a 600V maximum, it’s built to handle demanding electrical distributions in residential, commercial, and light industrial environments.

• Secure bolt-on mounting delivers a rigid, vibration-resistant bus connection, reducing the risk of loosening and ensuring consistent performance in panels subject to vibration or movement.
• Thermal-magnetic trip unit provides stable, repeatable protection by quickly responding to both sustained overcurrents and sudden short-circuits, helping to safeguard downstream equipment and wiring.
• OEM-compatible design is engineered to pair with matching Siemens OEM load centers and panelboards, making replacements and retrofits straightforward without sacrificing reliability.
• Versatile applications suited for residential service panels, commercial distribution boards, and light industrial equipment enclosures—where dependable, high-current protection is essential.

Key specifications

• Manufacturer: Siemens
• Part number: LXD63B450L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 450A
• Voltage rating: 600V
• Poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Choosing the Siemens LXD63B450L means investing in a dependable protection solution that stays put in demanding installations while delivering precise, predictable trips when protection is required. It’s an ideal fit for installers and facility managers looking to upgrade panelboards and load centers with a high-current, reliable bolt-on breaker that aligns with Siemens’ engineering standards and performance expectations.