Square D PJA36100 - 1000 A, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D PJA36100 — a robust 1000A, 3-pole plug-in molded case circuit breaker engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for installers and facility managers who demand quick, reliable protection, this unit is ready to perform when it matters most.

Fast plug-in connection for streamlined installation — designed to slide into compatible OEM load centers and panelboards with minimal downtime. This means faster replacements, easier upgrades, and reduced labor costs on job sites ranging from commercial to light industrial environments.

Thermal-magnetic trip unit for stable protection — the built-in thermal-magnetic mechanism delivers repeatable trip characteristics, providing precise overload protection and immediate short-circuit response. In real-world terms, that translates to fewer nuisance trips and greater peace of mind for high-demand electrical systems.

3-pole, 1000A capacity for demanding systems — ideal for three-phase distribution setups where a single device must reliably guard major feeders and critical circuits. Designed to handle elevated loads in panelboards and load centers without compromising safety or performance.

Compatibility and versatility — purpose-built to work with matching OEM load centers and panelboards, ensuring cohesive protection architecture across your electrical distribution. Suitable for residential, commercial, and light industrial applications where consistent protection is non-negotiable.

Who benefits most from the Square D PJA36100? electrical contractors, building maintenance teams, and facility engineers who install, maintain, or upgrade panelboards. It’s the right choice when you need a rugged, plug-in solution that delivers reliable protection for high-current, three-phase systems.

Key specifications at a glance

• Manufacturer: Square D
• Part Number: PJA36100
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 1000A
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

In practice, this plug-in breaker simplifies upgrades in existing panelboards and panel assemblies, reduces installation time during new builds, and provides dependable protection for critical electrical infrastructure. If you’re upgrading or maintaining a three-phase distribution system that demands strong short-circuit response and reliable overload protection, the Square D PJA36100 is a focused, purpose-built choice that prioritizes performance, compatibility, and ease of use.