{"product_id":"siemens-ngb1b030-circuit-breaker","title":"Siemens | NGB1B030 | Circuit Breaker | 30A | 1-Pole | 347V","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens NGB1B030\u003c\/strong\u003e is a 30-amp, 1-pole circuit breaker rated for 347V, designed to protect a single hot leg in commercial and industrial electrical systems. Ideal for maintenance, retrofit, and replacement projects that require precise compatibility with the NGB family and Siemens panels.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 30 A\u003c\/li\u003e \u003cli\u003ePoles: 1-Pole\u003c\/li\u003e \u003cli\u003eVoltage rating: 347 V\u003c\/li\u003e \u003cli\u003eReference: NGB1B030 (best compatibility reference)\u003c\/li\u003e \u003cli\u003ePart of the Siemens NGB series family\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this Siemens breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDesigned for straightforward replacement in panels that accept NGB-type devices, reducing downtime during maintenance or upgrades.\u003c\/li\u003e \u003cli\u003e347V capability makes it suitable for commercial distribution and lighting circuits that run on higher voltage systems, helping protect wiring and equipment from overloads on a single leg.\u003c\/li\u003e \u003cli\u003eReliability you expect from Siemens — engineered to trip consistently under fault conditions and protect downstream devices from damage.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofit an existing panel to add a dedicated 30 A single-pole circuit on a 347 V distribution path.\u003c\/li\u003e \u003cli\u003eReplace a failed breaker in a Siemens panel where the original part number is NGB1B030.\u003c\/li\u003e \u003cli\u003eProtect critical 347V circuits such as lighting feeders, control circuits, or branch circuits in commercial installations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAlways confirm fit and ratings before ordering — the part number is the best reference for compatibility.\u003c\/li\u003e \u003cli\u003eUse in panels designed for Siemens NGB1B030-series devices and rated for 347V, 30A, 1-Pole configurations.\u003c\/li\u003e \u003cli\u003eFollow standard electrical safety practices: shut off main power, verify absence of voltage, and install per manufacturer guidelines.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re performing routine maintenance, upgrading an old panel, or replacing a failed breaker, the Siemens NGB1B030 delivers dependable protection for a single 347V circuit. Keep your electrical system aligned with your original specifications by choosing the exact part number that matches your panel’s requirements.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46426261487778,"sku":"NGB1B030","price":1722.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/siemens-ngb1b030-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}