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circuit-breaker

Square D LGL36400CU31X 400A 3P 600V Circuit Breaker | AmpState

Part Number LGL36400CU31X
Amperes 400
Poles 3
Voltage 600
Product Type circuit-breaker
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Manufacturer :Square D
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Replacement available
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Picture available on request
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CSA / UL Approved
Regular price $17,874.00
Sale price $17,874.00 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
Square D LGL36400CU31X 400A 3P 600V Circuit Breaker | AmpState

Square D LGL36400CU31X 400A 3P 600V Circuit Breaker | AmpState

Regular price $17,874.00
Sale price $17,874.00 Regular price
Unit price
Product description
Shipping

Meet the Square D LGL36400CU31X — a robust 400 A, 3-pole, 600 V circuit breaker designed to protect panelboards, load centers, and electrical distribution networks. Built for reliability in demanding environments, this unit delivers precise interruption and dependable protection when it matters most.

This model is purpose-built for retrofit work and ongoing maintenance planning where keeping the exact part number matters. By choosing LGL36400CU31X, you simplify spares management and reduce the risk of compatibility issues during upgrades or replacements.

Specifications at a glance

  • Manufacturer: Square D
  • Part Number: LGL36400CU31X
  • Product Type: Circuit Breaker
  • Amperage: 400 A
  • Poles: 3
  • Voltage: 600 V

Why this model stands out

  • When renovations or replacements require maintaining the same component lineage, LGL36400CU31X ensures seamless compatibility with existing installations.
  • Reliability for electrical distribution: Designed to protect the integrity of panelboards and load centers, helping minimize downtime and safeguard downstream circuits.
  • Strategic sourcing via AmpState: Available through AmpState, making it easier to source a specific Square D part when exact fit and traceability matter.

Ideal for

  • Facilities upgrading or expanding 3-phase electrical distribution where a 400 A, 3-pole, 600 V breaker fits the panel’s requirements.
  • Maintenance planners who need to stock the exact part number to avoid compatibility gaps during servicing.
  • contractors and electricians managing retrofit projects that require consistent component lineage and predictable performance.

Practical considerations and usage tips

Before installation, verify that the panelboards or distribution equipment are designed to accept a 3-pole, 400 A, 600 V circuit breaker of the Square D lineage. Maintain documentation showing the LGL36400CU31X part number to support future maintenance and audits. For compatibility checks or to confirm fit with your specific installation, feel free to reach out—we’ll help verify the match to keep your project on track.

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

Contact sales@ampstate.com

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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