{"product_id":"square-d-qhb120-20a-120v-1-pole-bolt-on-circuit-breaker","title":"Square D QHB120 - 20 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D QHB120—a 20A, 120V, 1-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and loadcenters. Built to endure the demands of residential, commercial, and light industrial environments, this unit combines a secure mounting method with precise protection you can trust.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e: A rigid bus connection minimizes movement and vibration, helping maintain a reliable, arc-free electrical path even in panels that see frequent door openings or equipment starts.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: A dual-sensor protection system that reacts to both overloads (thermal) and short circuits (magnetic) for fast, repeatable trips and reduced nuisance outages.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e: Engineered to integrate smoothly with matching Square D OEM loadcenters and panelboards, ensuring consistent trip characteristics and straightforward replacement.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile, space-conscious configuration\u003c\/strong\u003e: A compact 1-pole, 20A breaker that fits standard panelboard footprints without complicating your electrical layout.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable for a range of circuits\u003c\/strong\u003e: Ideal for residential lighting and outlet circuits, small commercial loads, and light industrial applications where dependable protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e: Square D QHB120, 1-pole, 20A, 120V, bolt-on molded case circuit breaker. Designed for branch circuit overcurrent and short-circuit protection in panelboards and loadcenters, with a focus on durability and predictable performance.\u003c\/p\u003e \u003ch3\u003eWhy this breaker is a smart choice for your panel\u003c\/h3\u003e \u003cp\u003eWhen reliability matters, the Square D QHB120 delivers. Its bolt-on mounting creates a solid, vibration-resistant connection that helps prevent loose contacts over time. The thermal-magnetic trip unit provides stable protection across varying loads and temperatures, so you’re less likely to experience unexpected trips during routine startup or high-demand moments.\u003c\/p\u003e \u003cp\u003eThis breaker is ideal for:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eResidential service panels and lighting circuits\u003c\/li\u003e \u003cli\u003eSmall to mid-size commercial installations with mixed loads\u003c\/li\u003e \u003cli\u003eLight industrial control and power distribution where standardization matters\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eSeamless integration and consistent performance are the hallmarks of the QHB120. If you’re upgrading or replacing a like-for-like bolt-on, 1-pole protection device, this breaker provides a straightforward, code-compliant solution that keeps your electrical system protected and easy to maintain.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355391185058,"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_1e47d6b3-3c79-4998-8d46-c3e429665b81.png?v=1764691741","url":"https:\/\/www.ampstate.com\/products\/square-d-qhb120-20a-120v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}