{"product_id":"siemens-hgb3b045b-45a-600v-3-pole-bolt-on-circuit-breaker","title":"Siemens HGB3B045B - 45 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens HGB3B045B—a 45 A, 600 V, 3-pole bolt-on molded case circuit breaker designed to safeguard every distribution panel. Built for reliability in demanding environments, this unit delivers precise branch circuit overcurrent protection and fast short-circuit response in panelboards and loadcenters.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-on mounting\u003c\/strong\u003e delivers a secure, vibration-resistant bus connection, reducing loosening risk and ensuring consistent electrical contact in dynamic installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e combines slow-burning thermal protection with instantaneous magnetic trip, providing stable, repeatable protection against overloads and short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e ideal for three-phase distribution, enabling clean, balanced protection across all phases in commercial or light industrial setups.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600 V rating\u003c\/strong\u003e suitable for higher-voltage branch circuits, offering robust protection for modern electrical systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e engineered to pair with matching Siemens OEM loadcenters and panelboards for seamless integration and performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e suitable for residential, commercial, and light industrial environments where dependable protection and easy serviceability are priorities.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThe Siemens HGB3B045B is more than a breaker—it's a core component of a safe, reliable electrical distribution system. Its bolt-on, molded case design provides rugged physical durability and proven electrical performance, while the thermal-magnetic trip mechanism offers protection that you can count on during both routine operation and fault conditions. With compatibility across Siemens load centers and panelboards, you get a streamlined retrofit or new-install solution that minimizes compatibility concerns and installation time.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWho benefits most\u003c\/strong\u003e: electrical contractors, facilities managers, and maintenance teams working with three-phase panels in commercial or light-industrial spaces, or homeowners upgrading to a robust, industry-standard protection solution.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eUse cases and scenarios\u003c\/strong\u003e:\n\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eProtecting branch circuits in three-phase panelboards for small commercial spaces or light industrial equipment racks.\u003c\/li\u003e \u003cli\u003eUpgrading legacy panels to a modern, bolt-on MCCB for improved fault protection and serviceability.\u003c\/li\u003e \u003cli\u003eInstalling in new builds where Siemens OEM compatibility ensures straightforward panel integration.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Siemens HGB3B045B, you’re choosing a reliability-focused solution that prioritizes clear protection, simple installation, and durable performance across everyday electrical challenges. If you’re configuring or upgrading a panelboard or loadcenter, this 45 A, 600 V, 3-pole bolt-on breaker stands out as a precise, practical choice that aligns with real-world needs and industry standards.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349806403746,"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_e8d51775-ad5d-49cc-9a18-2e2a70aa322d.png?v=1764157347","url":"https:\/\/www.ampstate.com\/products\/siemens-hgb3b045b-45a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}