Square D PJL36080U31 A - 800 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Square D PJL36080U31A 800A, 600V, 3-pole molded case circuit breaker is built to safeguard high‑current branch circuits in panelboards and load centers. With a compact molded‑case design, it frees precious panel space while delivering dependable protection when it matters most.

Precision protection you can count on

• Thermal-magnetic trip unit delivers stable, repeatable protection by combining overload sensing with instantaneous short‑circuit tripping for rapid isolation.
• Compact design minimizes panel depth and improves wire routing, making it ideal for crowded electrical rooms or retrofit projects.
• OEM-compatible fit designed to work with matching OEM load centers and panelboards for straightforward replacements and predictable coordination.
• High-current capability 800A rating supports large branch feeders and distribution circuits in residential, commercial, and light industrial settings.

Technical snapshot

• Manufacturer: Square D
• Part number: PJL36080U31A
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 800 A
• Voltage rating: 600 V
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Ideal applications and scenarios

Use the PJL36080U31A where reliable, high‑current protection is essential: large residential service panels upgrading to support existing feeders; commercial office spaces with 3‑phase equipment; or light industrial environments with heavy machinery and power distribution loads. Its 3‑pole configuration is designed for three‑phase systems, ensuring coordinated protection across all legs without compromising performance.

Why this breaker stands out

In situations where panel space is at a premium, the PJL36080U31A’s compact molded case makes efficient use of enclosure real estate while keeping installation straightforward. The thermal‑magnetic trip mechanism provides precise protection characteristics that respond quickly to dangerous faults, reducing the risk of equipment damage and downtime. And because it’s designed to be compatible with matching OEM load centers and panelboards, you get a reliable, cohesive protection system with predictable electrical performance.

Whether you're upgrading an existing panel or specifying components for a new build, the Square D PJL36080U31A is a practical, robust choice for 800 A, 600 V, 3‑pole protection that keeps your electrical system safe and compliant.