{"product_id":"siemens-lgb3k040b-circuit-breaker","title":"Siemens | LGB3K040B | Circuit Breaker | 40A | 3-Pole | 600V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens LGB3K040B\u003c\/strong\u003e is a rugged, 40A, 3-pole, 600V bolt-on circuit breaker engineered to protect and control three-phase power in demanding electrical environments. Designed for maintenance, retrofit, and replacement tasks, this unit delivers exact Siemens specifications to keep your systems compliant and running smoothly.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy choose the LGB3K040B for your project? It’s built to align with Siemens standards, ensuring reliable performance in three-phase distribution and protection schemes. The bolt-on design provides a secure, heavy-duty installation suitable for panelboards, motor control centers, and other industrial electrical gear that demands dependable circuit protection.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaintenance: Replace aging or out-of-spec breakers with a direct, compatible Siemens part to maintain original protection characteristics.\u003c\/li\u003e \u003cli\u003eRetrofit: Upgrade legacy systems to modern, Siemens-certified components while preserving system ratings and trip coordination.\u003c\/li\u003e \u003cli\u003eReplacement: Stocked spare for critical service needs in commercial or industrial facilities that rely on 3-phase protection at 600V.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eImportant compatibility notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAlways confirm fit and ratings before ordering. The part number \u003cstrong\u003eLGB3K040B\u003c\/strong\u003e is the best reference to ensure exact compatibility with your equipment.\u003c\/li\u003e \u003cli\u003eSuitable for systems that require a 40A, 3-pole, 600V bolt-on circuit breaker; verify mounting style and enclosure compatibility in your installation manual.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical tips for installation and operation\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003ePrepare the mounting area by ensuring the enclosure supports bolt-on breakers and that the mounting hardware is appropriate for the panel design.\u003c\/li\u003e \u003cli\u003eCoordinate with your system’s protection plan to maintain proper trip characteristics and sequence in three-phase circuits.\u003c\/li\u003e \u003cli\u003eMaintain clear labeling and documentation that references the exact part number (LGB3K040B) for future maintenance and audits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor professionals seeking a reliable, Siemens-branded solution that aligns with exact specs and maintenance needs, the LGB3K040B offers straightforward compatibility, robust 3-phase protection, and a durable bolt-on installation designed to keep critical power systems safeguarded and compliant.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46426840563874,"sku":"LGB3K040B","price":4388.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-lgb3k040b-circuit-breaker-40a-3-pole-600v-bolt-985.webp?v=1789632087","url":"https:\/\/www.ampstate.com\/products\/siemens-lgb3k040b-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}