{"product_id":"square-d-qhb220-20a-240v-2-pole-bolt-on-circuit-breaker","title":"Square D QHB220 - 20 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D QHB220 is a purpose-built 20A, 240V, 2-pole bolt-on circuit breaker designed to guard your most essential branch circuits. Built for stability and longevity in panelboards and load centers, this molded case breaker delivers dependable overcurrent and short-circuit protection with a design that’s ready for demanding residential, commercial, and light industrial environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e for a rigid, vibration-resistant bus connection that minimizes loosening and inconsistent trips in busy electrical panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection by combining slow-building thermal response with fast magnetic actuation for sudden faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e design works with matching Square D OEM load centers and panelboards, ensuring a cohesive, reliable protection system.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e ideal for residential circuits, light commercial panels, and modest industrial setups that require solid, code-compliant protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e QHB220\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 2\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\u003eWhat makes this breaker stand out\u003c\/h3\u003e\n\u003cp\u003eUnlike generic substitutes, the QHB220 is engineered to stay seated under vibration, maintain a solid bus connection, and trip predictably when faults occur. Its 2-pole configuration ensures both hot lines disconnect together, enhancing safety for 240V circuits and preventing partial deenergization scenarios. For installers and facilities managers, this means fewer call-backs and a cleaner protection strategy across panels that rely on consistent performance from key protective devices.\u003c\/p\u003e \u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or stocking panels in single- and multi-family dwellings where 240V circuits are common\u003c\/li\u003e \u003cli\u003eSmall commercial panelboards serving outlets, lighting, and equipment with reliable, coded protection\u003c\/li\u003e \u003cli\u003eLight industrial environments that require sturdy bolt-on MCCB protection with predictable trip behavior\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTips for use\u003c\/h3\u003e\n\u003cp\u003eEnsure compatibility with your existing OEM load centers and panelboards when selecting replacement breakers. The bolt-on mounting style is designed to deliver a strong, vibration-resistant connection—perfect for installations where panels experience regular activity or vibration. Use this 20A, 240V unit for circuits that demand dependable short-circuit protection and protection against sustained overloads, keeping critical systems running smoothly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355391447202,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/schnieder_and_square_d_breaker_and_panel_0badf4d3-1831-4963-9cae-ea3f187d5ebe.png?v=1764691744","url":"https:\/\/www.ampstate.com\/products\/square-d-qhb220-20a-240v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}