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

Square D LJA36600U31X - 600 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

★★★★★
Part Number LJA36600U31X
Amperes 600
Poles 3
Voltage 600
Product Type circuit-breaker
Icon
Manufacturer :Square D
Icon
Replacement available
Icon
Picture available on request
Icon
CSA / UL Approved
Regular price $710.00
Sale price $710.00 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 LJA36600U31X - 600 A 600 V 3-Pole Plug-In Circuit Breaker | AmpState - Circuit Breakers

Square D LJA36600U31X - 600 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

Regular price $710.00
Sale price $710.00 Regular price
Unit price
Product description
Shipping

Meet the Square D LJA36600U31X—a 600 A, 600 V, 3-pole plug-in molded case circuit breaker built for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Designed for fast integration into existing systems, it’s the reliable choice for demanding electrical environments.

Why this breaker stands out

  • Fast plug-in connection enables quick installation or replacement in compatible OEM panelboards, reducing downtime and simplifying maintenance.
  • Thermal-magnetic trip unit delivers stable, repeatable protection by combining thermal sensing for overloads with magnetic actuation for instantaneous short-circuit interruption.
  • OEM-compatible design pairs with matching Square D load centers and panelboards for a seamless, code-friendly fit.
  • Versatile across settings suitable for residential, commercial, and light industrial applications where reliable three-phase protection is essential.

Product highlights

  • Amperage rating: 600 A
  • Voltage rating: 600 V
  • Poles: 3 (three-pole)
  • Mounting style: Plug-in
  • Type: Thermal-magnetic molded case circuit breaker
  • Manufacturer: Square D
  • Part number: LJA36600U31X
  • Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

  • Upgrading or maintaining panelboards and load centers in residential, commercial, or light industrial facilities where robust 3-pole protection is required.
  • Replacing a failed or aging breaker with a compatible Square D unit to restore reliable three-phase protection.
  • Installing a plug-in solution in service entrances or distribution panels that demand swift, secure connections and minimal downtime.

Who benefits

Electricians, facilities managers, and panel builders will appreciate the combination of quick installation, dependable protection, and OEM compatibility. It’s an ideal choice when you need a strong, plug-in solution that works seamlessly with Square D panelboards and load centers in diverse environments.

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

Exactly what we needed for a shutdown replacement. No surprises.

Plant · Shutdown

Verified

Good communication and clear updates while the order was processed.

Project · Coordination

Verified

Looks and feels like a proper industrial-grade part. Works as expected.

Service · Field install

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