{"product_id":"square-d-pka36120u43a-1200a-3-pole-plug-in-circuit-breaker","title":"Square D PKA36120U43 A - 1200 A, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D PKA36120U43A—a 1200 A, 3-pole plug-in molded case circuit breaker designed to deliver reliable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. When uptime matters, this unit’s fast plug-in connection streamlines installation and simplifies future replacements, helping you minimize downtime and service disruptions.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eRapid plug-in installation:\u003c\/strong\u003e Speeds up panel work by delivering a secure, tool-free connection that seats firmly in compatible enclosures.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic protection:\u003c\/strong\u003e A calibrated trip unit combines thermal sensing for overloads with magnetic tripping for short circuits, delivering stable, repeatable protection performance across operating conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-ready compatibility:\u003c\/strong\u003e Designed to pair with matching Square D OEM loadcenters and panelboards for straightforward replacements and dependable integration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current, versatile use:\u003c\/strong\u003e Ideal for residential, commercial, and light industrial environments that require robust 1200 A protection across three phases.\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 PKA36120U43A\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\u003eNumber of Poles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Plug-in\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications and scenarios\u003c\/h3\u003e\n\u003cp\u003eUse this 3-pole plug-in breaker in panelboards and loadcenters that require dependable three-phase protection in high-current environments. It’s well-suited for main distribution panels in commercial spaces, electrical rooms in light industrial facilities, and larger residential setups where a dedicated 1200 A protection device is required. If you’re upgrading aging equipment or consolidating feeders, this unit provides a dependable, OEM-compatible solution that reduces compatibility headaches during replacement projects.\u003c\/p\u003e \u003ch3\u003eInstallation tips and best practices\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eEnsure the panelboard is rated for 1200 A and supports plug-in, 3-pole breakers of this class. Confirm that the enclosure is designed for this specific Square D model to guarantee proper fit and protection.\u003c\/li\u003e \u003cli\u003eBefore seating the breaker, inspect bus connectors for cleanliness and any signs of wear to secure a solid plug-in connection.\u003c\/li\u003e \u003cli\u003eKeep essential tools and a spare breaker on hand to expedite future replacements and minimize panel downtime.\u003c\/li\u003e \u003cli\u003eFollow local electrical codes and manufacturer guidance during installation, maintenance, and any planned panel upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Square D PKA36120U43A, you gain a trusted, high-capacity protection device that keeps critical electrical systems safe while streamlining installation and maintenance workflows. Whether you're upgrading a panelboard, installing a new loadcenter, or performing routine service, this 1200 A, 3-pole plug-in breaker delivers precise protection, dependable performance, and compatibility you can rely on.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355360055458,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/schnieder_and_square_d_breaker_and_panel_4a1a681d-4e9e-4223-bb0e-ca2e1b725bcb.png?v=1764691537","url":"https:\/\/www.ampstate.com\/products\/square-d-pka36120u43a-1200a-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}