Square D | PJP36080CU31A | Circuit Breaker | 800A | 3-Pole | 600V

Meet the Square D PJP36080CU31A circuit breaker—a robust, high-capacity protection solution designed for demanding electrical systems. Engineered for maintenance, retrofit, and replacement projects, this 800A, 3-pole unit delivers reliable disruption protection at a solid 600V, helping keep heavy-duty equipment and distribution panels safeguarded.

Key specifications at a glance

• Amperage: 800A
• Poles: 3-Pole
• Voltage rating: 600V
• Part reference: PJP36080CU31A (the best reference for compatibility)

Why this model stands out

• Precise compatibility for upgrades and replacements: The PJP36080CU31A is purpose-built for installations that require exact form, fit, and electrical ratings. When you’re updating an aging panel or retrofitting a system to handle higher demand, it’s designed to align with existing bus configurations and protection schemes.
• Copper termination emphasis: The “CU” variant indicates copper termination capabilities, supporting durable, low-resistance connections that stand up to heavy load cycling.
• Clear reference for ordering: Rely on the part number as your primary compatibility check to minimize downtime and mismatches in critical replacements.

Ideal applications and use cases

• Upgrading industrial control panels and motor control centers that require 800A, 3-pole protection at 600V+
• Retrofit projects where matching the original protection profile is essential for safe, compliant operation
• Maintenance replacements in boards serving heavy machinery, manufacturing lines, and data-center infrastructure

Installation and compatibility tips

Before ordering, verify fit and ratings against the target panel or switchgear. Use the exact part reference (PJP36080CU31A) to confirm electrical characteristics and mechanical footprint align with the enclosure. Ensure your conductor sizing, torque specifications, and bus configuration match the breaker’s design for reliable trips and uninterrupted protection.

What to expect in performance and reliability

Designed to provide dependable overcurrent protection in high-demand environments, this 3-pole 800A breaker helps safeguard personnel and equipment by interrupting fault currents quickly and safely. Its rugged construction and adherence to Square D engineering standards support long service life in demanding industrial settings.

Note: Confirm fit and ratings before ordering. The part number is the best reference for compatibility, ensuring you get the exact substitution needed for your system.