{"product_id":"square-d-pja36120u41a-1200a-600v-3-pole-plug-in-circuit-breaker","title":"Square D PJA36120U41 A - 1200 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D PJA36120U41A 3-pole plug-in molded case circuit breaker—the rugged, high-capacity protection your panelboards and load centers rely on. Rated for 1200 A and up to 600 V, this device is purpose-built for demanding commercial, light industrial, and select high-load residential installations where reliable branch-circuit protection is non-negotiable.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey advantages that set this breaker apart\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e for quick installation and easy replacement, minimizing downtime during panel maintenance or upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by precisely coordinating overload and short-circuit responses across circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e protects all three phases simultaneously, ensuring balanced protection in three-phase systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e engineered to fit matching Square D load centers and panelboards, helping you maintain proper coordination and electrical clearance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-capacity rating\u003c\/strong\u003e supports heavy load applications up to 1200 A at 600 V, making it suitable for main or feeder roles in larger panels.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer\u003c\/strong\u003e: Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number\u003c\/strong\u003e: PJA36120U41A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating\u003c\/strong\u003e: 1200 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating\u003c\/strong\u003e: 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of poles\u003c\/strong\u003e: 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style\u003c\/strong\u003e: Plug-in\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eIndustrial and commercial panelboards requiring robust three-phase protection with quick, field-friendly plug-in installation.\u003c\/li\u003e \u003cli\u003eHigh-demand electrical rooms where a 1200 A main or feeder breaker helps consolidate protection in a single, reliable device.\u003c\/li\u003e \u003cli\u003eRetrofitting or expanding existing Square D panel systems that need a precise fit to maintain coordination with upstream and downstream devices.\u003c\/li\u003e \u003cli\u003eResidential setups that demand industrial-grade protection for subpanels or large electrical installs in multi-tenant or specialty applications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this model matters in real-world service\u003c\/h3\u003e\n\u003cp\u003eWhen your electrical distribution relies on steady, dependable protection, the PJA36120U41A delivers predictability. The thermal-magnetic trip curve minimizes nuisance trips while delivering decisive action during overloads or faults. The plug-in design minimizes field wiring complexity, enabling quicker swaps during maintenance or panel upgrades. And because it’s designed to harmonize with matching OEM load centers, you’ll benefit from clean fitment, reliable trip coordination, and minimal reconfiguration requirements.\u003c\/p\u003e \u003ch3\u003ePractical tips for installers and specifiers\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eConfirm panel compatibility with the PJA family before installation to ensure optimal trip coordination and clearance.\u003c\/li\u003e \u003cli\u003eUse the plug-in connection to simplify future replacements and reduce field wiring errors during panel servicing.\u003c\/li\u003e \u003cli\u003ePlan for three-phase distribution scenarios—this 3-pole breaker handles all phases in balanced loads effectively.\u003c\/li\u003e \u003cli\u003eMaintain standard safety practices when working with 600 V systems; verify de-energization and use proper PPE before servicing panelboards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355357565090,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-pja36120u41-a-1200-600-v-3-pole-plug-in-circuit-breaker-482.webp?v=1788752098","url":"https:\/\/www.ampstate.com\/products\/square-d-pja36120u41a-1200a-600v-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}