{"product_id":"square-d-hja36125unyp","title":"Square D HJA36125UNYP 125A 3-Pole 600 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eSquare D HJA36125UNYP 125A 3-Pole 600 V Circuit Breaker delivers reliable three-phase protection for demanding electrical systems. Built by Square D, this unit combines a solid 125-amp current rating with a true 3-pole configuration, safeguarding circuits in environments up to 600 volts.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HJA36125UNYP\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 125 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Square D\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWho it's for: technicians and facility managers responsible for three-phase power distribution in commercial and light-industrial settings. If your panels or enclosures are designed to accept Square D protective devices, this breaker provides a precise fit and dependable performance for protecting feeders and three-phase circuits.\u003c\/p\u003e \u003cp\u003eWhy this matters: the 3-pole design ensures simultaneous protection across all three phases, helping prevent unbalanced loads and reducing the risk of damage to motors, conveyors, compressors, and other three-phase equipment. The 600 V rating makes it suitable for a wide range of industrial applications, while the 125 A rating targets medium-scale distribution without oversizing protective devices.\u003c\/p\u003e \u003cp\u003eUse cases and practical guidance:\n- Protect three-phase feeders feeding motors, HVAC equipment, or processing lines in industrial spaces.\n- Serve as a main or feeder protection device in compatible Square D panels and enclosures.\n- Ideal when upgrading or replacing aging breakers that need a precise match to existing panel specifications.\u003c\/p\u003e \u003cp\u003eKey considerations for installation and maintenance:\n- Confirm three-phase system compatibility and voltage level (up to 600 V) before installation.\n- Ensure the panel accepts the HJA36125UNYP form factor and that conductor sizes and terminal torque follow your system’s guidelines.\n- Replace only with the exact part number to maintain panel coordination and protection integrity.\u003c\/p\u003e \u003cp\u003eWith the Square D HJA36125UNYP 125A 3-Pole 600 V Circuit Breaker, you gain a dependable, standards-aligned solution that keeps your three-phase power distribution safe and uninterrupted, day in and day out.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46423185522850,"sku":"HJA36125UNYP","price":510.0,"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-hja36125unyp","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}