{"product_id":"siemens-lgb3b050b-50a-600v-3-pole-bolt-on-circuit-breaker","title":"Siemens LGB3B050B - 50 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eDesigned for dependable protection in panelboards and load centers, the Siemens LGB3B050B is a 3-pole molded-case circuit breaker rated for 50A and 600V, with a sturdy bolt-on mounting that keeps the bus connection secure even in vibration-heavy environments. This is not just a breaker—it's a critical safety and reliability component for residential, commercial, and light industrial electrical systems.\u003c\/p\u003e \u003ch3\u003eCore advantages\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-on mounting for a rigid, vibration-resistant bus connection\u003c\/strong\u003e—reduces movement and improves reliability in panels that experience door operation or mechanical vibration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e with stable, repeatable protection—adapts to temperature changes and fault currents to trip reliably when needed.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e provides simultaneous protection of all three phases in a 3-phase system, ensuring balanced shutdowns and equipment protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600V rating and 50A capacity\u003c\/strong\u003e—suitable for a wide range of residential, commercial, and light industrial branch circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM panel compatibility\u003c\/strong\u003e—specifically designed to be compatible with matching Siemens OEM load centers and panelboards, ensuring a seamless fit and electrical performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat this breaker protects\u003c\/h3\u003e\n\u003cp\u003eThe LGB3B050B offers branch circuit overcurrent protection and short-circuit protection. In the event of overload or fault, the thermal-magnetic trip unit opens the circuit to prevent wiring damage, fires, and equipment failure, while allowing quick restoration when the fault is cleared.\u003c\/p\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eNew installations in Siemens-compatible load centers and panelboards for three-phase systems.\u003c\/li\u003e \u003cli\u003eRetrofitting existing panels that require a reliable 3-pole 50A protection device with bolt-on mounting.\u003c\/li\u003e \u003cli\u003eFacilities like small commercial offices, light manufacturing, and service equipment where a robust, durable breaker is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart number: LGB3B050B\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage rating: 50 A\u003c\/li\u003e \u003cli\u003eVoltage rating: 600 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 \u003cp\u003eChoosing the Siemens LGB3B050B means prioritizing reliability and alignment with Siemens panel systems. It’s built to perform consistently in real-world electrical environments, keeping your power distribution safe and up to code while simplifying maintenance and replacement in the field.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349822361762,"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_da0a1e05-7211-4619-b68d-44bd7fc48e33.png?v=1764157738","url":"https:\/\/www.ampstate.com\/products\/siemens-lgb3b050b-50a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}