{"product_id":"square-d-hja36150u31xaa","title":"Square D HJA36150U31XAA 150A 3-Pole 600 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D HJA36150U31XAA is a purpose-built 150 A, three-pole circuit breaker designed for demanding industrial power distributions. Engineered to support protective relays and metering through potential transformer (PT) configurations, this device blends reliable overcurrent protection with measurement-ready versatility in a single, rugged package.\u003c\/p\u003e \u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eCurrent rating: 150 A, delivering strong protection for moderate-to-high load centers\u003c\/li\u003e \u003cli\u003ePoles: 3 for balanced three‑phase protection in commercial and industrial systems\u003c\/li\u003e \u003cli\u003eVoltage rating: up to 600 V, suitable for typical industrial power distribution environments\u003c\/li\u003e \u003cli\u003ePotential transformer compatibility: designed to integrate with PT-based protection and remote metering schemes\u003c\/li\u003e \u003cli\u003ePrecise part identification: Part Number HJA36150U31XAA ensures exact replacement and compatibility\u003c\/li\u003e \u003cli\u003eRobust construction: built to withstand the rigors of demanding electrical installations\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy this Breaker Stands Out\u003c\/h2\u003e\n\u003cp\u003eUnlike generic breakers, this Square D model is purpose-tuned for environments where monitoring and protection must work hand-in-hand. The 3-pole configuration delivers coordinated trip protection across all phases, reducing the risk of unbalanced faults. Its PT-ready design means you can pair it with metering and protection schemes without needing additional adapters, simplifying installation and improving visibility into real-time electrical conditions.\u003c\/p\u003e \u003ch2\u003eIdeal Use Cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eIndustrial facilities with three-phase equipment and heavy motors\u003c\/li\u003e \u003cli\u003eData centers and server rooms where reliable protection and accurate power monitoring are critical\u003c\/li\u003e \u003cli\u003eManufacturing floors with complex distribution panels requiring PT-enabled protection\u003c\/li\u003e \u003cli\u003eCommercial buildings employing three-phase distribution in main service panels\u003c\/li\u003e \u003cli\u003e OEM panel assemblies needing a precise, compatible Square D component\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eSpecifications at a Glance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eCurrent rating: 150 A\u003c\/li\u003e \u003cli\u003ePoles: 3\u003c\/li\u003e \u003cli\u003eVoltage rating: 600 V\u003c\/li\u003e \u003cli\u003ePart Number: HJA36150U31XAA\u003c\/li\u003e \u003cli\u003eFunction: Circuit breaker with potential transformer support for enhanced protection and measurement\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical Tips for Installation and Use\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eVerify panel compatibility and fitment with your Square D enclosure and labeling to ensure proper mounting and electrical clearances\u003c\/li\u003e \u003cli\u003ePlan for PT integration by identifying the appropriate metering or protection relays in your system design\u003c\/li\u003e \u003cli\u003eTorque connectors to the manufacturer's specifications and perform a final inspection after installation\u003c\/li\u003e \u003cli\u003eKeep a record of the part number (HJA36150U31XAA) for future replacements or maintenance planning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46423181852834,"sku":"HJA36150U31XAA","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-hja36150u31xaa-150a-3-pole-600-v-circuit-breaker-potential-771.webp?v=1789279782","url":"https:\/\/www.ampstate.com\/products\/square-d-hja36150u31xaa","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}