{"product_id":"siemens-qj3b225a02-circuit-breaker","title":"Siemens | QJ3B225A02 | Circuit Breaker | 225A | 3-Pole | 240V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens QJ3B225A02\u003c\/strong\u003e circuit breaker is a reliable bolt-on, 3-pole protection device designed for 240V systems with a 225A rating. Built for durability in commercial and industrial panels, this unit excels in maintenance, retrofit, and replacement projects where precise compatibility matters.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 225 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\u003ePart number:\u003c\/strong\u003e QJ3B225A02\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Best reference for compatibility; confirm fit and ratings before ordering\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this bolt-on breaker suits demanding electrical systems\u003c\/h3\u003e \u003cp\u003eWith a three-pole configuration, this Siemens circuit breaker protects all three phases of a 240V feed, ensuring coordinated tripping and robust overload protection for large feeders, panelboard circuits, and motor control centers. The bolt-on mounting provides a secure, vibration-resistant connection that’s easier to service in heavy-duty environments than plug-in alternatives.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e \u003cp\u003ePerfect for:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eRetrofits in existing Siemens panels that require QJ3B225A02 with bolt-on mounting\u003c\/li\u003e \u003cli\u003eReplacement of aging 3-pole 225A breakers in industrial panels\u003c\/li\u003e \u003cli\u003eFeeding high-current circuits such as large HVAC units, pumps, and service feeders where 225A protection is required\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow to verify compatibility\u003c\/h3\u003e \u003cp\u003eBefore ordering, compare the panel’s frame, bus, and rating requirements to the QJ3B series. The QJ3B225A02 part number is the most reliable reference for compatibility — ensure your panel accepts a 3-pole, 225A, 240V bolt-on breaker in the same frame style.\u003c\/p\u003e \u003ch3\u003eInstallation and safety notes\u003c\/h3\u003e \u003cp\u003ePower must be isolated during installation. Follow Siemens installation guidelines and torque specifications for bolt-on breakers, and ensure the device is seated firmly in the panel to maintain proper contact and reliable operation.\u003c\/p\u003e \u003cp\u003eChoosing a genuine Siemens breaker aligns with a long track record of electrical reliability, serviceability, and availability of replacement parts, translating to reduced downtime and a smoother maintenance experience.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427417936034,"sku":"QJ3B225A02","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-qj3b225a02-circuit-breaker-225a-3-pole-240v-bolt-553.webp?v=1789720307","url":"https:\/\/www.ampstate.com\/products\/siemens-qj3b225a02-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}