{"product_id":"siemens-ngb1b045b-45a-347v-1-pole-bolt-on-circuit-breaker","title":"Siemens NGB1B045B - 45 A, 347 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003eSiemens NGB1B045B is your reliable, purpose-built solution for protecting branch circuits in panelboards and loadcenters. This 45A, 347V, 1-pole bolt-on molded case circuit breaker is engineered to deliver dependable overcurrent and short-circuit protection where it matters most—in residential, commercial, and light industrial electrical distributions. \u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e — The bolt-on design provides a rigid, vibration-resistant bus connection, ensuring a dependable ride through the bumps and vibration of everyday operation. This means fewer loosening issues and more consistent protection over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e — Combines a thermal element for steady overload protection with a magnetic trip for swift short-circuit response. The result is stable, repeatable protection performance that minimizes nuisance trips and quickly isolates faults when they occur.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-compatible reliability\u003c\/strong\u003e — Specifically engineered to be compatible with matching Siemens OEM loadcenters and panelboards, helping you maintain proper coordination within your distribution system without compatibility surprises.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e — Ideal for a range of settings: residential panels for branch-circuit protection, light commercial installations (lighting or receptacle feeders), and light industrial distributions where compact, reliable protection is required.\u003c\/li\u003e\n\u003c\/ol\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e NGB1B045B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker (MCCB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 45 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 347 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Bolt-on\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re upgrading an existing Siemens panel or stocking a replacement for service calls, the NGB1B045B delivers a precise fit and predictable protection you can trust. Its focused 45 A rating and 347 V capability cover common commercial and residential distribution needs, while the single-pole design keeps layouts simple and efficient. For technicians seeking a durable, plug-and-play option that aligns with Siemens’ ecosystem, this bolt-on MCCB is a straightforward, long-term solution that reduces downtime and helps keep electrical systems safe and compliant.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355137527970,"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_6596a801-fe79-4167-8463-fb3a3cf581f6.png?v=1764689562","url":"https:\/\/www.ampstate.com\/products\/siemens-ngb1b045b-45a-347v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}