{"product_id":"siemens-ngb1b090b-circuit-breaker","title":"Siemens | NGB1B090B | Circuit Breaker | 1-Pole | 347V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens NGB1B090B—a precise, OEM 1-pole circuit breaker engineered for 347V systems. Built for maintenance, retrofit, and replacement projects, this part reflects Siemens’ exacting standards for fit, function, and long‑term reliability. When you need to preserve the original protection scheme in your panel, this is the part to trust.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 347V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e NGB1B090B\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Maintenance, retrofit, and replacement where matching specs are required\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy choose the NGB1B090B for your panel\u003c\/h3\u003e\n\u003cp\u003eThis Siemens circuit breaker is not just a drop‑in replacement—it’s a guaranteed fit that preserves the original electrical protection characteristics of your system. Using the exact part number ensures compatibility with Siemens panels and downstream components, helping you maintain safety, warranty compliance, and consistent trip behavior.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRoutine maintenance on commercial or industrial panels that require 1-pole protection at 347V\u003c\/li\u003e \u003cli\u003eRetrofit projects where the existing breaker matches the NGB1B090B specifications\u003c\/li\u003e \u003cli\u003eReplacement of a failed or worn 1-pole breaker in systems designed for 347V operation\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow to verify compatibility\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm the fit and ratings by cross‑checking your panel label and the part number. The NGB1B090B is designed to be the best reference for compatibility, so using the exact part number is your most reliable step. If your panel documentation lists NGB1B090B or requires a 1-pole breaker rated for 347V, you’re aligned.\u003c\/p\u003e \u003ch3\u003ePractical guidance for installers\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReview panel labeling to ensure voltage and pole requirements match 347V single‑pole protection\u003c\/li\u003e \u003cli\u003eKeep records of the replacement part number (NGB1B090B) for future maintenance and warranty validation\u003c\/li\u003e \u003cli\u003eHandle with standard electrical safety procedures and verify the circuit is de-energized during replacement\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re maintaining an established Siemens installation, upgrading to preserve original protection parameters, or completing a retrofit with trusted Siemens components, the NGB1B090B delivers dependable, field‑proven performance. Add this exact 1‑pole, 347V circuit breaker to your cart to ensure precise compatibility and streamlined maintenance workflows.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427474624674,"sku":"NGB1B090B","price":399.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-ngb1b090b-circuit-breaker-1-pole-347v-871.webp?v=1789728238","url":"https:\/\/www.ampstate.com\/products\/siemens-ngb1b090b-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}