{"product_id":"square-d-hda36125sh","title":"Square D HDA36125SH 125A 3-Pole 600 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D HDA36125SH, a rugged three-pole circuit breaker designed to guard 3-phase power systems with precise, reliable protection. With a 125 A current rating and a 600 V maximum, this unit is built for demanding industrial and commercial applications where safe, controlled shutdown is critical.\u003c\/p\u003e \u003cul\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\u003ePart number:\u003c\/strong\u003e HDA36125SH\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this breaker matters for your system\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e3-pole design provides synchronized protection across all phases, helping prevent unbalanced loads and protecting motors, drives, and feeders from overloads and faults.\u003c\/li\u003e \u003cli\u003eDesigned for compatibility with Square D panels and enclosures that support the HDA family, simplifying replacement, upgrades, and inventory management.\u003c\/li\u003e \u003cli\u003e125 A capacity makes it a practical choice for feeders and larger branch circuits in mid-size industrial setups or commercial power centers.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal use scenarios\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMain or feeder protection in 3‑phase distribution panels for manufacturing lines, processing equipment, or HVAC systems.\u003c\/li\u003e \u003cli\u003eReplacement part in existing Square D installations that require a reliable 125 A, 3-pole, 600 V protection device.\u003c\/li\u003e \u003cli\u003eCritical safety component in service disconnects and electrical rooms where robust protection translates to uptime and safer maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eKey considerations for installation and compatibility\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eEnsure the enclosure or panel accepts HDA-series breakers and that mounting and bus connections align with your specific Square D setup.\u003c\/li\u003e \u003cli\u003eInstall by qualified personnel in accordance with local electrical codes and manufacturer installation guidelines to ensure proper performance and safety.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Square D HDA36125SH when you need dependable, three-phase protection that aligns with established Square D engineering and your 125 A protection requirements. It’s a precise, purpose-built solution for reliable power distribution in industrial and commercial environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46423575593122,"sku":"HDA36125SH","price":5807.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-hda36125sh-125a-3-pole-600-v-circuit-breaker-374.webp?v=1789316284","url":"https:\/\/www.ampstate.com\/products\/square-d-hda36125sh","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}