{"product_id":"siemens-lgb2b125b-125a-600v-2-pole-bolt-on-circuit-breaker","title":"Siemens LGB2B125B - 125 A, 600 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens LGB2B125B is a 2-pole bolt-on molded case circuit breaker rated at 125 A and 600 V, designed to deliver reliable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for durability and consistent performance, this breaker is a pragmatic choice for everyday electrical protection needs in residential, commercial, and light industrial settings.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant connection to the bus, helping maintain electrical integrity even in panels subjected to movement or vibration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by coordinating overloads (thermally) and rapid fault clearing (magnetically) for high-energy faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e designed to work with matching Siemens loadcenters and panelboards, ensuring a proper fit and dependable performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e ideal for residential panels, commercial distributions, and light industrial service entrances where reliable protection is essential.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProven Siemens engineering\u003c\/strong\u003e backed by robust construction and long-standing industry trust for continuous protection you can count on.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\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 LGB2B125B\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 125 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of poles:\u003c\/strong\u003e 2\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style:\u003c\/strong\u003e Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for reliability in real-world panels, the LGB2B125B is the right choice when you need solid protection with a secure connection. Use it to upgrade a panelboard, replace aging breakers, or outfit a new installation where predictable trip performance and a sturdy mounting scheme matter most. If you’re coordinating with Siemens loadcenters and panelboards, this bolt-on solution aligns with your system for streamlined, trustworthy protection.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349822132386,"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_375d5d28-e620-433a-8270-6fbf2683cd38.png?v=1764157729","url":"https:\/\/www.ampstate.com\/products\/siemens-lgb2b125b-125a-600v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}