{"product_id":"siemens-b320h-20a-240v-3-pole-bolt-on-circuit-breaker","title":"Siemens B320H - 20 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eProtect your panel’s most vital circuits with the Siemens B320H 3-pole bolt-on circuit breaker. Built for reliability in demanding environments, this 20A, 240V unit delivers consistent, fast-acting protection for three-phase systems and single-phase feeders alike.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection to the panel, reducing movement and potential wear over time.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection against overloads and short circuits, helping to minimize nuisance trips while safeguarding equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design for 240V applications\u003c\/strong\u003e ideal for panelboards and load centers supporting three-phase distribution or multiple 120V legs.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e20A, 240V rating\u003c\/strong\u003e precisely matched to circuits that require dependable, intermediate protection without frequent tripping.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMolded-case construction\u003c\/strong\u003e engineered for durability in commercial, residential, and light industrial installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e OEM load center compatibility\u003c\/strong\u003e designed to integrate smoothly with Siemens OEM panelboards and matching components for a cohesive protection system.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile use across environments\u003c\/strong\u003e suited for residential service panels, commercial distribution boards, and light industrial equipment feeders.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy choose the Siemens B320H?\u003c\/h3\u003e\n\u003cp\u003eUnlike generic breakers, the B320H is built to maintain accurate trip thresholds across varying temperatures and loads, ensuring you get the right protection when it matters most. The bolt-on mount and stainless bus connections reduce vibration-induced wear and improve long-term reliability, making it a prudent choice for installations where panel accessibility and dependable performance are paramount.\u003c\/p\u003e \u003ch3\u003eUse cases and practical scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading an aging panel to modern, reliable thermal-magnetic protection for three-phase or multi-leg circuits.\u003c\/li\u003e \u003cli\u003eAdding a dedicated 20A branch circuit in a commercial space without compromising panel integrity.\u003c\/li\u003e \u003cli\u003eReplacing worn-out breakers in load centers that require a snug bolt-on fit and consistent trip behavior.\u003c\/li\u003e \u003cli\u003eInstalling in new constructions where Siemens OEM compatibility ensures seamless integration with existing panel ecosystems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B320H\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 20A\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 \u003cp\u003eEquip your panel with Siemens reliability and precise protection—the B320H 3-pole bolt-on breaker is ready to safeguard your electrical system with clarity and confidence.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349753417890,"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_9804597b-584c-4f02-95f4-e20818b06f96.png?v=1764155922","url":"https:\/\/www.ampstate.com\/products\/siemens-b320h-20a-240v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}