{"product_id":"siemens-b390hh-90a-240v-3-pole-bolt-on-circuit-breaker","title":"Siemens B390HH - 90 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens B390HH is a 90A, 240V, 3-pole bolt-on molded case circuit breaker designed for dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Its robust construction and precise protection features make it a reliable choice for ensuring power reliability in a variety of electrical setups.\u003c\/p\u003e \u003ch3\u003eWhy the Siemens B390HH stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e delivers a rigid, vibration-resistant connection to the bus, reducing loosening risks in demanding environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection performance, responding to both sustained overloads and sudden shorts.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole configuration\u003c\/strong\u003e ideal for three-phase circuits common in commercial and light industrial applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility with OEM load centers\u003c\/strong\u003e ensures seamless integration with matching Siemens load centers and panelboards.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suitable for residential, commercial, and light industrial protection needs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhere it fits best\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eProtects branch circuits in panelboards and loadcenters, preventing damage from overcurrent and short circuits.\u003c\/li\u003e \u003cli\u003eGreat for upgrades or replacements in existing Siemens OEM systems, ensuring consistent performance and fit.\u003c\/li\u003e \u003cli\u003ePerfect for 3-phase installations that demand reliable protection and durable mounting.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey specifications\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 B390HH\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 90A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips and use cases\u003c\/h3\u003e\n\u003cp\u003eWhen integrating the Siemens B390HH into a panelboard or loadcenter, rely on its thermal-magnetic trip to handle typical overloads and fast magnetic trips for short circuits. It’s a solid choice for protecting 3-phase equipment, motors, and other loads in commercial spaces or light industrial setups, while still fitting neatly into residential-oriented distribution boards that require robust protection and reliable mounting.\u003c\/p\u003e \u003cp\u003eIf you’re maintaining consistency across your electrical distribution, using the B390HH with compatible OEM Siemens load centers ensures predictable performance, straightforward installation, and long-term reliability. This breaker is built to handle everyday demand, reduce nuisance trips, and safeguard critical circuits from damage due to overcurrent and short circuits.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349756334242,"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_91136308-d5e4-4b7b-a5ed-3337e2784c01.png?v=1764155982","url":"https:\/\/www.ampstate.com\/products\/siemens-b390hh-90a-240v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}