Square D PKA36120U31 A - 1200 A, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D PKA36120U31A 1200 A, 3-Pole Plug-In Molded Case Circuit Breaker—a purpose-built solution for dependable branch-circuit overcurrent and short-circuit protection in panelboards and loadcenters. Designed to integrate seamlessly with OEM equipment, this high-current, plug-in unit keeps large-scale electrical systems running with precision and speed.

• Fast plug-in connection for quick installation or hassle-free replacement, minimizing downtime during panel maintenance or upgrades.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining thermal overload sensing with magnetic short-circuit trip action for clean, decisive interruptions.
• High-current reliability at 1200 A with a 3-pole configuration, ideal for protecting heavy feeders and multi-wire branch circuits in demanding environments.
• OEM-compatible design ensures a precise fit with matching Square D load centers and panelboards, helping preserve warranty coverage and electrical performance.
• Plug-in molded case construction supports straightforward maintenance and quick swaps without rewiring, reducing service disruption in active panels.
• Versatile applicability suited for residential, commercial, and light industrial applications where robust, high-current protection is essential.

Why this matters When you’re guarding critical circuits, you want a breaker that reacts quickly to faults, minimizes nuisance trips, and slots neatly into your existing Square D ecosystem. The PKA36120U31A delivers a reliable, factory-aligned solution that supports fast service, durable performance, and clear protection boundaries for your panelboards and loadcenters.

Specifications at a glance

• Manufacturer: Square D
• Part Number: PKA36120U31A
• Amperage Rating: 1200 A
• Number of Poles: 3
• Mounting Style: Plug-in
• Type: Thermal-magnetic molded case circuit breaker
• Application: Branch circuit overcurrent and short-circuit protection

This combination of high current capacity, rapid installation, and OEM compatibility makes the Square D PKA36120U31A a smart choice for upgrading or expanding panelboard protection in any project that demands reliable, scalable electrical safeguarding.