Seamless online shopping experience guaranteed with easy shipping and returns policy.

Shop with Confidence: Our Products come with a Reliable Year-Long Warranty.

Icon
Secure transaction
Icon
FREE & fast shipping on orders over $49
Icon
CSA approved with 1 year warranty
Icon
30 day returns
circuit-breaker

Siemens LXD63B450 450A 3P Circuit Breaker | AmpState

Part Number LXD63B450
Amperes 450
Poles 3
Product Type circuit-breaker
Icon
Manufacturer :Siemens
Icon
Replacement available
Icon
Picture available on request
Icon
CSA / UL Approved
Regular price $7,066.00
Sale price $7,066.00 Regular price
Unit price
Save

Seamless online shopping experience guaranteed with easy shipping and returns policy.

Shop with Confidence: Our Products come with a Reliable Year-Long Warranty.

Icon
Secure transaction
Icon
FREE & fast shipping on orders over $49
Icon
CSA approved with 1 year warranty
Icon
30 day returns

Siemens LXD63B450 450A 3P Circuit Breaker | AmpState

Regular price $7,066.00
Sale price $7,066.00 Regular price
Unit price
Product description
Shipping

The Siemens LXD63B450 450A 3P Circuit Breaker is built for serious electrical protection in panelboards, load centers, and broader distribution networks. Designed to deliver reliable performance in high-current applications, this genuine Siemens component is the smart choice when a direct part-number match matters for upgrades, repairs, or spare inventory.

  • Exact fit, guaranteed compatibility: Part Number LXD63B450 ensures seamless replacement in existing Siemens panels, reducing guesswork and installation time.
  • High-current protection: 450 A rating provides robust protection for feeders and distribution circuits in commercial and industrial environments.
  • Three-pole configuration: 3P design delivers balanced protection across all phases, supporting reliable operation of multi-phase systems.
  • Genuine Siemens performance: Built to meet Siemens’ precise trip characteristics and electrical specifications, preserving panel coordination and safety margins.
  • AmpState availability: Securely available from AmpState for maintenance stock, panel builds, and rapid replacements.
  • Maintenance and project readiness: Ideal for maintenance teams, panel builders, and facilities planners who need predictable procurement and quick deployment.

Who should consider the LXD63B450?

Maintenance crews managing Siemens-based panelboards and load centers will benefit from having this exact 450 A, 3-pole breaker on hand. Panel builders specifying Siemens parts for new installations will appreciate the reliability and compatibility of the LXD63B450, while facilities teams maintaining large electrical distributions gain confidence from a consistent, OEM-designed protection device.

Practical use cases and scenarios

  • Replacing a failed high-current breaker in a Siemens panel where a direct part-number match is critical to avoid cross-reference delays.
  • Equipping spare inventory for service fleets that routinely service commercial or industrial distribution panels.
  • Specifying for new builds or retrofits that require robust, OEM-proven protection at 450 A in a 3-pole configuration.

Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.

Contact sales@ampstate.com

Shipping cost is based on weight. Just add products to your cart and use the Shipping Calculator to see the shipping price.

We want you to be 100% satisfied with your purchase.

What Our Customers Say

4.9 (38 reviews)

General feedback we often hear from customers purchasing industrial electrical parts.

Verified

Consistent quality. We’ve added similar items to our regular reorder list.

MRO · Reorder

Verified

Support is responsive when we have questions about fit or application.

Purchasing · Quick answers

Verified

A reliable choice when we need industrial parts on short notice.

Service · Urgent replacement

Fast industrial sourcing support

Need help?

  • Request a quote
  • Need a BOM priced for your project
  • Not sure which part is correct
  • Need an equivalent or replacement
  • Send your part list and get a fast reply

Email us at sales@ampstate.com for pricing, availability, alternates, and project support.

Email for a quote Typical reply: same business day