Square D PJA36080U41 A - 800 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D PJA36080U41A, an 800A, 600V, 3-pole plug-in molded case circuit breaker designed to safeguard panelboards and load centers with precision and speed. Built for dependable branch circuit overcurrent and short-circuit protection, this unit keeps critical electrical systems running smoothly in commercial, light industrial, and larger residential applications.

Why this breaker stands out

• Fast plug-in connection enables quick installation and simple replacements, minimizing downtime in service panels and distribution boards.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining long-term thermal coordination with instantaneous magnetic response to faults, helping prevent nuisance trips while shielding equipment.
• 3-pole design provides balanced three-phase protection, reducing the risk of phase imbalance and arcing in commercial or industrial setups.
• OEM compatibility engineered to fit matching Square D load centers and panelboards, ensuring reliable fit, proper trip curves, and streamlined maintenance.
• High-capacity ratings with an 800A rating for feeder protection and a 600V rating suitable for standard distribution systems in demanding environments.
• Versatile for multiple environments ideal for panelboard main feeders, subfeeders, and service upgrades in residential, commercial, and light industrial projects.

Ideal for who and where

This plug-in breaker is a practical choice for electrical contractors, facilities managers, and maintenance teams responsible for upgrading or maintaining large panelboards and load centers. It’s well-suited for retrofit projects, new builds, or replacing failing units in commercial spaces, retail locations, schools, and light industrial facilities where uninterrupted power and reliable fault protection are critical.

Use cases and practical applications

• Main or feeder protection in commercial panelboards requiring 800A capacity.
• Replacement in OEM-aligned load centers where fast, seamless plug-in installation reduces downtime.
• Protection for critical circuits feeding heavy equipment, machinery rooms, or data and communication infrastructure within safe 600V distribution networks.

Technical specifications at a glance

• Manufacturer: Square D
• Part number: PJA36080U41A
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 800A
• Voltage rating: 600V
• Poles: 3
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Choose the Square D PJA36080U41A for durable, precise protection that aligns with OEM panelboard specifications and delivers dependable performance across commercial and industrial electrical systems. It’s a purpose-built solution for reliable uptime, straightforward installation, and long-term protection of your electrical infrastructure.