{"product_id":"siemens-lgb3b040b-40a-600v-3-pole-bolt-on-circuit-breaker","title":"Siemens LGB3B040B - 40 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens LGB3B040B is a 40A, 600V, 3-pole bolt-on molded case circuit breaker designed to protect branch circuits with precision in panelboards and load centers. Its three-pole configuration ensures simultaneous disconnection of all phases, delivering safer, more reliable performance for 3-phase electrical systems in a variety of environments.\u003c\/p\u003e \u003ch2\u003eKey benefits\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection, reducing loose connections and nuisance trips in demanding installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by combining thermal overload protection with instantaneous magnetic trip for short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e40A at 600V\u003c\/strong\u003e capacity suits a wide range of branch circuits without oversizing components, helping to optimize panelboard layouts.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e is designed to work with matching Siemens OEM loadcenters and panelboards, ensuring dependable fit and performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e well-suited for residential, commercial, and light industrial settings, from home electrical panels to small business electrical rooms.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eApplications and use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eProtect 3-phase equipment such as compressors, pumps, and HVAC components in commercial or light industrial spaces.\u003c\/li\u003e \u003cli\u003eReplace or upgrade existing breakers in Siemens or compatible OEM panelboards to restore reliable branch-circuit protection.\u003c\/li\u003e \u003cli\u003eIntegrate into new installations where a robust 3-pole, bolt-on MCCB solution is required for motor or process loads.\u003c\/li\u003e \u003cli\u003eUse in retrofit projects where vibration resistance and secure electrical connections are priorities in demanding environments.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical snapshot\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e LGB3B040B\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 40A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of poles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style:\u003c\/strong\u003e Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePrimary purpose:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eInstallation tips and best practices\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eEnsure the breaker is mounted on an appropriate panelboard or load center that is compatible with the LGB3B040B to maintain guaranteed performance.\u003c\/li\u003e \u003cli\u003eSecure the bolt-on connection to maximize bus integrity and minimize the potential for vibration-induced trips in dynamic environments.\u003c\/li\u003e \u003cli\u003ePlan 3-phase protection with a single device that trips all three lines simultaneously, simplifying downstream protection coordination and isolation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349822328994,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-lgb3b040b-40-a-600-v-3-pole-bolt-on-circuit-breaker-988.webp?v=1788733426","url":"https:\/\/www.ampstate.com\/products\/siemens-lgb3b040b-40a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}