{"product_id":"siemens-hb3b050-50a-240v-3-pole-bolt-on-circuit-breaker","title":"Siemens HB3B050 - 50 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens HB3B050 is a robust 50A, 240V, 3-pole bolt-on molded case circuit breaker designed to safeguard electrical systems in panelboards and load centers. Built for dependable branch circuit overcurrent and short-circuit protection, this breaker delivers consistent performance across residential, commercial, and light industrial applications.\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 reliable protection even in environments with equipment start-ups or movement.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection: the thermal element handles overloads while the magnetic element responds quickly to short circuits for fast interruption.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e designed to pair with matching Siemens load centers and panelboards, ensuring proper fit, alignment, and coordinated protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole design\u003c\/strong\u003e delivers dependable three-phase protection for balanced distribution and equipment that requires multi-phase interruption.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDirectly applicable for branch circuits\u003c\/strong\u003e with a 50A rating and 240V operation, ideal for protecting feeders and critical circuits in panel installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRugged molded case construction\u003c\/strong\u003e supports long-term operation in everyday electrical environments, from home garages to small commercial spaces.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: HB3B050\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: 240 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 in panelboards and load centers\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho this is for and practical use\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eIdeal for installers upgrading or expanding residential panels, light commercial panels, or small industrial distribution boards that require reliable three-phase protection.\u003c\/li\u003e \u003cli\u003eGreat as a direct replacement for Siemens-based systems, helping ensure compatibility and streamlined maintenance with OEM components.\u003c\/li\u003e \u003cli\u003eUseful for protecting feeders and critical loads in new installations or renovations where a secure, vibration-resistant connection matters.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTips for optimal performance\u003c\/h3\u003e\n\u003cp\u003eWhen planning installation, pair the HB3B050 with a matching Siemens panelboard to ensure optimal bus alignment and protection coordination. The bolt-on design simplifies mounting in compatible enclosures, contributing to a clean, secure setup with fewer loose connections and wobble over time. Regularly verify that system voltages and load profiles align with the 240V, 50A ratings to maintain reliable protection for your critical circuits.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349797621922,"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_d9ecf590-cca8-438e-a4cb-0d4de3b5c551.png?v=1764157083","url":"https:\/\/www.ampstate.com\/products\/siemens-hb3b050-50a-240v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}