{"product_id":"siemens-qj23b125ha02-circuit-breaker","title":"Siemens | QJ23B125HA02 | Circuit Breaker | 125A | 3-Pole | 240V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens QJ23B125HA02\u003c\/strong\u003e is a 125A, 3-pole circuit breaker designed for 240V three‑phase systems. Built for maintenance, retrofit, and replacement projects where exact specification matching matters, this bolt‑on unit delivers secure, dependable protection in compatible panels.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBolt‑on mounting\u003c\/strong\u003e for a solid, vibration‑resistant connection in panels designed for bolt‑on breakers.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e125A overload protection\u003c\/strong\u003e to safeguard feeders and interconnected equipment in 240V, three‑phase circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree‑pole configuration\u003c\/strong\u003e provides coordinated protection across all three phases, helping prevent uneven loading and equipment damage.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePrecise compatibility\u003c\/strong\u003e with Siemens bolt‑on panels that accept QJ breakers; the part number \u003cem\u003eQJ23B125HA02\u003c\/em\u003e is the best reference for matching your enclosure.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance‑friendly replacement\u003c\/strong\u003e minimizes downtime when replacing worn or tripped devices in active electrical systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis breaker is ideal for:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMaintenance or retrofit projects in commercial or industrial panels that require Siemens QJ bolt‑on devices.\u003c\/li\u003e \u003cli\u003eNew installations needing reliable protection for 125A, 3‑phase, 240V circuits.\u003c\/li\u003e \u003cli\u003eReplacing existing breakers with exact ratings to maintain panel integrity and trip coordination.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eImportant compatibility notes:\u003c\/strong\u003e Confirm fit and ratings before ordering. The part number is the best reference for compatibility, so use \u003cem\u003eQJ23B125HA02\u003c\/em\u003e to verify against your panel’s requirements.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePractical installation tips\u003c\/strong\u003e: Power down the system and follow all panel manufacturer guidelines when seating the breaker. Keep a spare on hand for quick maintenance or unexpected replacements, and ensure the panel is rated for bolt‑on Siemens QJ devices to maintain optimal protection and reliability.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427423047842,"sku":"QJ23B125HA02","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/siemens-qj23b125ha02-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}