{"product_id":"square-d-hja36030-30a-600v-3-pole-plug-in-circuit-breaker","title":"Square D HJA36030 - 30 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D HJA36030\u003c\/strong\u003e 30A, 600V, 3-Pole Plug-In Molded-Case Circuit Breaker from AmpState delivers dependable branch circuit protection for panelboards and load centers. Designed for fast, tool-free installation and robust trip performance, this unit is built to keep residential, commercial, and light industrial electrical systems safe and up to code.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection:\u003c\/strong\u003e Quick installation and easy replacement in compatible panels, minimizing downtime during service or upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit:\u003c\/strong\u003e Stable, repeatable protection that combines thermal overload sensing with instantaneous magnetic response for short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design for 3-phase needs:\u003c\/strong\u003e Ideal for commercial or light industrial panelboards and load centers that require three‑phase protection up to 600V.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible:\u003c\/strong\u003e Engineered to fit with matching Square D OEM load centers and panelboards, ensuring proper fit, alignment, and reliable operation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpecific ratings and compatibility:\u003c\/strong\u003e 30A, 600V, molded-case, plug-in mounting — a precise choice for branch circuit overcurrent and short‑circuit protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart Number: HJA36030\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 30A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 600V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Plug-in\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis breaker is a practical, high-reliability solution for projects ranging from panelboard refreshes in service rooms to new-build commercial spaces. If you’re upgrading an aging distribution panel or stocking spare parts for field service, the HJA36030’s plug-in design and thermal-magnetic protection give you predictable performance when it matters most.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy choose this 3‑pole plug-in breaker\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMinimizes installation time with a straightforward plug-in connection designed for compatible Square D panelboards.\u003c\/li\u003e \u003cli\u003eDelivers dual-mode protection—thermal for sustained loading, magnetic for fast response to short circuits—helping protect wiring, devices, and motors from damage.\u003c\/li\u003e \u003cli\u003eOffers clean compatibility with OEM panels, so you don’t have to modify or adapt panels to fit the breaker.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical tips and usage notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eUse in panelboards and load centers that specify a matching 3-pole, 600V plug-in molded-case breaker from Square D.\u003c\/li\u003e \u003cli\u003ePlan replacements or upgrades around 30A branch circuits that require reliable protection without frequent nuisance trips.\u003c\/li\u003e \u003cli\u003eAlways have a qualified electrician perform installation and ensure the panel’s labeling and NEC requirements are satisfied.\u003c\/li\u003e \u003cli\u003eStore spare units in a clean, dry environment to preserve the integrity of the thermal-magnetic trip mechanism for long-term reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355288555682,"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_7557dcc8-36c5-41f4-a5b7-e9bf2f3d60a3.png?v=1764690963","url":"https:\/\/www.ampstate.com\/products\/square-d-hja36030-30a-600v-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}