{"product_id":"siemens-hb3b040-40a-3p-240v-circuit-breaker","title":"Siemens HB3B040 40A 3P 240V Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eDiscover reliable, OEM-grade protection with the \u003cstrong\u003eSiemens HB3B040\u003c\/strong\u003e 40A, 3P, 240V circuit breaker. Built for demanding electrical environments, this unit is purposefully designed for panelboards, load centers, and distribution systems where precise trip protection and dependable performance matter most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact OEM part for seamless BOM alignment:\u003c\/strong\u003e The \u003cem\u003eHB3B040\u003c\/em\u003e designation ensures compatibility with your original equipment and documentation, making replacements straightforward and downtime minimal.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole, 240V operation:\u003c\/strong\u003e Ideal for three-phase circuits that run at 240V, delivering balanced protection across all phases for reliability in industrial and commercial installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e40 A protection rating:\u003c\/strong\u003e Calibrated to guard feeders and branch circuits against overloads and short circuits, helping safeguard downstream equipment without over-tripping sensitive controls.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile installation appeal:\u003c\/strong\u003e Commonly employed in panelboards, load centers, and electrical distribution setups where robust, coordinated protection is required.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSmart stocking choice:\u003c\/strong\u003e Perfect for replacement projects and spare inventories, ensuring your BOM stays consistent with the original part number and reducing project risk.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy choose this Siemens breaker? Because it delivers OEM-grade reliability that technicians and facilities managers trust. By matching the exact trip characteristics and electrical footprint of your existing system, it helps maintain protective coordination and minimizes downtime during swaps or restorations. If you’re rebuilding a panel or refreshing spares, the HB3B040 keeps your distribution network compliant and ready for operation.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePractical use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReplacing an aging or failed 3P 240V breaker in a residential-turned-commercial multi-use panel where three-phase protection is required.\u003c\/li\u003e \u003cli\u003eStocking spare breakers for service vans or maintenance bays to speed on-site repairs and reduce equipment downtime.\u003c\/li\u003e \u003cli\u003eMaintaining BOM integrity during panel retrofits or upgrades that preserve the original Siemens configuration.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eHelpful support\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAvailable from AmpState, the \u003cem\u003eHB3B040\u003c\/em\u003e is ready to ship to keep your project on schedule. If you’re unsure about fit or compatibility with your current panel or BOM, \u003cstrong\u003emessage us\u003c\/strong\u003e and we’ll help you confirm that this exact part is the right match for your system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46412506955938,"sku":"HB3B040","price":1646.0,"currency_code":"CAD","in_stock":true}],"url":"https:\/\/www.ampstate.com\/products\/siemens-hb3b040-40a-3p-240v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}