{"product_id":"siemens-lgb2b040b-circuit-breaker","title":"Siemens | LGB2B040B | Circuit Breaker | 40A | 2-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens LGB2B040B Circuit Breaker delivers reliable overcurrent protection in demanding electrical setups. This 40A, 2-pole unit is rated for up to 600V, making it a solid choice for panels and retrofit projects that require exact specification alignment.\u003c\/p\u003e \u003cp\u003eDesigned for maintenance, retrofit, and replacement tasks where matching specs matter, the LGB2B040B offers a straightforward path to restoring safe, code-compliant operation in existing systems. The part number is the most reliable reference for compatibility, so before ordering, verify that this exact model matches your panel’s requirements and ratings.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 40A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 2-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat this means for your project\u003c\/h3\u003e\n\u003cp\u003eThe Siemens LGB2B040B is a precise fit for installations that demand the LGB2B040B’s 40A capacity in a 2-pole configuration, with a 600V rating. It simplifies replacement and retrofitting by aligning with established Siemens compatibility standards, reducing uncertainty during upgrades or service shutdowns.\u003c\/p\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacing worn or failed breakers in compatible Siemens panels where a 40A, 2-pole, 600V unit is required\u003c\/li\u003e \u003cli\u003eRetrofit projects that need to match existing specifications exactly to maintain system performance\u003c\/li\u003e \u003cli\u003eMaintenance actions that require a known-good part number reference to ensure proper fit and operation\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation notes\u003c\/h3\u003e\n\u003cp\u003eAlways confirm fit and ratings against your panel labeling and manufacturer recommendations. The LGB2B040B part number is the best reference for ensuring a true-fit replacement, so cross-check this model with your existing equipment before proceeding with purchase or installation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46425646039202,"sku":"LGB2B040B","price":657.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/siemens-lgb2b040b-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}