{"product_id":"siemens-qj23b150h-150a-240v-3-pole-bolt-on-circuit-breaker","title":"Siemens QJ23B150H - 150 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens QJ23B150H is a robust 150A, 240V, 3-pole bolt-on molded case circuit breaker engineered to protect your electrical system with precision. Designed for dependable branch circuit overcurrent and short-circuit protection, it fits seamlessly into panelboards and loadcenters, delivering reliable performance when it matters most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection, helping maintain consistent electrical contact even in environments with movement or equipment vibration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e combines a thermal element for overload protection with a magnetic element for rapid short-circuit response, delivering stable, repeatable protection characteristics across varying loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e is engineered to work with matching Siemens OEM loadcenters and panelboards, reducing installation fuss and ensuring a reliable fit and predictable performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suitable for residential, commercial, and light industrial installations, from busier service panels to equipment rooms requiring dependable protection for three-phase circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable molded case construction\u003c\/strong\u003e built to endure daily operation and provide long-term protection for your electrical infrastructure.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart number: QJ23B150H\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage rating: 150 A\u003c\/li\u003e \u003cli\u003eVoltage rating: 240 V\u003c\/li\u003e \u003cli\u003eNumber of poles: 3\u003c\/li\u003e \u003cli\u003eMounting style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eUse cases and whom it’s for\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or replacing a failing 3-pole protection device in Siemens panelboards or loadcenters, ensuring seamless compatibility and reliable protection.\u003c\/li\u003e \u003cli\u003eProtecting three-phase distribution feeders in light commercial spaces, warehouses, or small industrial rooms where stable trip performance matters.\u003c\/li\u003e \u003cli\u003eInstalling as main or feeder protection in residential or commercial electrical panels that require a 150A rating and solid, bolt-on mounting.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for installation and care\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify that the panelboard or loadcenter is designed for a 3-pole, 150A bolt-on breaker to ensure proper fit and electrical performance.\u003c\/li\u003e \u003cli\u003eFollow standard electrical safety practices: power down the equipment, confirm de-energization, and consult the panel’s documentation for torque recommendations on bolt-on connections.\u003c\/li\u003e \u003cli\u003eUse the thermal-magnetic protection characteristics to coordinate with upstream protective devices and downstream feeders for predictable protection curves.\u003c\/li\u003e \u003cli\u003eStore and handle the breaker carefully to avoid damage to the molded case or bus connections, preserving performance over the breaker’s service life.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Siemens QJ23B150H, you’re choosing a time-tested solution that blends precise protection with straightforward replaceability. It’s a thoughtful choice for any project requiring reliable 150A, 240V, 3-pole protection in a bolt-on format—delivered with the durability and compatibility you expect from Siemens.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355161612450,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_465a4d5f-37c2-48b4-b9e6-10cd7ddbd2fd.png?v=1764689845","url":"https:\/\/www.ampstate.com\/products\/siemens-qj23b150h-150a-240v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}