{"product_id":"siemens-qj23m175","title":"Siemens QJ23M175 175A 3-Pole 240 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens QJ23M175 175A 3-Pole 240 V Circuit Breaker is a robust solution for protecting three-phase power distribution in commercial and industrial settings. Built around Siemens engineering for reliability, this breaker delivers dependable overcurrent protection for feeders and heavy 3-phase loads, helping to prevent costly electrical damage and downtime.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 175 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 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e QJ23M175\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this 3-pole design matters\u003c\/h3\u003e\n\u003cp\u003eIn a three-phase system, a 3-pole breaker protects all phases simultaneously. The Siemens QJ23M175 ensures balanced protection across the entire circuit, reducing the risk of unbalanced loads and unwanted tripping on a single phase. This makes it an ideal choice for applications where uptime and coordinated shutdowns are critical—such as motors, HVAC equipment, and other 3-phase machinery.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMain distribution or subfeed protection in 3-phase panels for commercial or light industrial facilities\u003c\/li\u003e \u003cli\u003eFeeder protection for manufacturing lines that rely on three-phase motors\u003c\/li\u003e \u003cli\u003eHVAC and processing equipment circuits where reliable 240 V, 3-phase protection is essential\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat makes it stand out\u003c\/h3\u003e\n\u003cp\u003eRather than relying on single-phase protection, this 3-pole unit provides coordinated tripping across all phases, improving safety and system integrity. The QJ23M175 is designed to integrate smoothly with Siemens distribution equipment, helping to maintain labeling consistency, serviceability, and panel compatibility—key factors for project timelines and long-term maintenance.\u003c\/p\u003e \u003ch3\u003eInstallation and practical tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify the system voltage is 240 V and that a 3-phase configuration is present before installation.\u003c\/li\u003e \u003cli\u003eReplace like-for-like with the same current rating (175 A) to preserve intended protection levels.\u003c\/li\u003e \u003cli\u003eInstall per Siemens guidelines, ensuring proper seating in the panel and clean, secure wiring connections.\u003c\/li\u003e \u003cli\u003eLabel the circuit clearly to reflect its 3-pole protection and 175 A rating for future maintenance and safety checks.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow it compares to alternatives (without naming brands)\u003c\/h3\u003e\n\u003cp\u003eFor any 3-phase setup, a 3-pole breaker like the QJ23M175 provides synchronized protection across all live conductors, reducing the risk of phase-to-phase faults that can occur when using separate single-pole devices. This cohesive approach minimizes nuisance tripping on unbalanced loads and simplifies maintenance in busy electrical rooms.\u003c\/p\u003e \u003cp\u003eIn short, the Siemens QJ23M175 175A 3-Pole 240 V Circuit Breaker is crafted for reliability, compatibility, and straightforward installation in demanding 3-phase systems. If your project requires solid, coordinated protection for 240-volt, three-phase circuits, this part delivers the trusted performance you expect from Siemens.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46423583916194,"sku":"QJ23M175","price":2790.0,"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\/siemens-qj23m175","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}