{"product_id":"siemens-hqj3b175ha02-circuit-breaker","title":"Siemens | HQJ3B175HA02 | Circuit Breaker | 175A | 3-Pole | 240V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens HQJ3B175HA02 is a robust 3‑pole, 240V circuit breaker engineered for reliable overcurrent protection in commercial and industrial electrical systems. With a 175A rating and bolt‑on mounting, this unit is designed for straightforward replacement or retrofit in compatible panels, keeping your power distribution protected without lengthy downtime.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 175 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3‑Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt‑On\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference:\u003c\/strong\u003e HQJ3B175HA02\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this model stands out\u003c\/h3\u003e\n\u003cp\u003eWhat makes the HQJ3B175HA02 unique is its alignment with Siemens’ bolt‑on design language, delivering a dependable protection solution that slots directly into compatible panels. It’s built for maintenance, retrofit, and replacement projects where exact specifications matter, ensuring you’re not guessing on compatibility or performance.\u003c\/p\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofit projects in existing Siemens panels where a 175A, 3‑pole, 240V bolt‑on breaker is required.\u003c\/li\u003e \u003cli\u003eMaintenance replacements to restore protected circuits after a fault or failure in a 3‑phase distribution system.\u003c\/li\u003e \u003cli\u003eNew installations in panel configurations that specify a 175A, 3‑pole, 240V bolt‑on device from Siemens.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation notes\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Confirm fit and ratings before ordering. The HQJ3B175HA02 part number is the best reference for compatibility with your Siemens panels. This bolt‑on breaker is designed to work in systems that supply 240V three‑phase power and require a 175A protective device. Before installation, ensure your panel model and bus arrangement support bolt‑on 3‑pole breakers of this rating to prevent operational or safety issues.\u003c\/p\u003e \u003ch3\u003ePractical tips for best results\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMatch the breaker's amperage and pole count to the protected load to avoid nuisance tripping or insufficient protection.\u003c\/li\u003e \u003cli\u003eUse only in panels specified by Siemens for bolt‑on 3‑pole 175A devices to maintain electrical integrity and warranty coverage.\u003c\/li\u003e \u003cli\u003eSchedule replacement during a planned maintenance window to minimize downtime on critical circuits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427069153442,"sku":"HQJ3B175HA02","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a0994f42-7fad-49d1-911a-c2784022b8c9.png?v=1765492979","url":"https:\/\/www.ampstate.com\/products\/siemens-hqj3b175ha02-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}