{"product_id":"square-d-hja36070sk","title":"Square D HJA36070SK 70A 3-Pole 600 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cstrong\u003eSquare D HJA36070SK 70A 3-Pole 600V Circuit Breaker\u003c\/strong\u003e — a robust, three-phase solution designed to safeguard demanding electrical systems. With a 70 A current rating and a 3-pole configuration, this circuit breaker delivers reliable, coordinated protection across all three legs of your 600 V power distribution. The HJA36070SK is built for industrial panels, service feeders, and motor circuits where consistent trip performance and quick isolation of faults are essential. \u003cp\u003e\u003cstrong\u003eWhy this 3-pole, 600 V breaker stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\u003cstrong-six-figure protection for three-phase loads:\u003e A true three-pole design ensures simultaneous disconnection of all phases, preventing unstable x-factors that can occur with single-pole devices in three-phase systems.\u003c\/strong-six-figure\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStructured for mid-sized industrial use:\u003c\/strong\u003e Ideal for motor-driven equipment, conveyors, HVAC equipment, and heavy feeders in panelboards and distribution panels that run on 600 V networks.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable compatibility with Square D ecosystems:\u003c\/strong\u003e Part Number \u003cem\u003eHJA36070SK\u003c\/em\u003e fits Square D installations where a 70 A rating is required, helping you maintain a clean, standardized protection scheme across your panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear, decisive overcurrent protection:\u003c\/strong\u003e Quickly interrupts fault currents to minimize damage to motors, wiring, and downstream devices, while preventing nuisance trips on healthy loads.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eKey specifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eCurrent rating: \u003cstrong\u003e70 A\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePoles: \u003cstrong\u003e3\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eVoltage rating: \u003cstrong\u003e600 V\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePart number: \u003cem\u003eHJA36070SK\u003c\/em\u003e\n\u003c\/li\u003e \u003cli\u003eBrand: \u003cstrong\u003eSquare D\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eThree-phase motor circuits in manufacturing equipment, pumps, and compressors\u003c\/li\u003e \u003cli\u003ePower feeders and distribution panels supplying industrial machinery\u003c\/li\u003e \u003cli\u003eCommercial or light-industrial HVAC and process systems that operate on 600 V\u003c\/li\u003e \u003cli\u003ePanels requiring a coordinated 3-pole breaker for reliable trip performance\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical guidance for installation and operation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eEnsure the enclosure and bus bars are compatible with Square D HJA-series breakers and rated for 600 V systems.\u003c\/li\u003e \u003cli\u003eVerify the load current aligns with the 70 A rating to prevent nuisance trips or under-protection.\u003c\/li\u003e \u003cli\u003eIn new installations or replacements, pair this breaker with a properly rated panel and follow local electrical codes and lockout\/tagout procedures during installation.\u003c\/li\u003e \u003cli\u003eRegularly inspect the breaker for signs of wear, loose connections, or overheating in high-load applications, and replace if degradation is observed.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you're upgrading an aging distribution panel, standardizing a new three-phase installation, or protecting a critical motor circuit, the Square D \u003cem\u003eHJA36070SK\u003c\/em\u003e 70 A, 3-pole, 600 V circuit breaker delivers decisive protection with straightforward integration into existing \u003cem\u003eSquare D\u003c\/em\u003e ecosystems. It’s a practical, purpose-built choice for professionals who need dependable three-phase overcurrent protection without compromisings on safety or performance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46423566811298,"sku":"HJA36070SK","price":3552.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/square-d-hja36070sk","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}