{"product_id":"siemens-ngb2b040-circuit-breaker","title":"Siemens | NGB2B040 | Circuit Breaker | 40A | 2-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens NGB2B040 Circuit Breaker — a precise, purpose-built protection device designed for exact Siemens specifications. With its 40A rating, 2-pole construction, and 600V capacity, this breaker is engineered to deliver dependable protection in maintenance, retrofit, and replacement scenarios where compatibility matters most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 40A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 2-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e NGB2B040\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIdeal use:\u003c\/strong\u003e maintenance, retrofit, and replacement where matching Siemens specs are required\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility note:\u003c\/strong\u003e Confirm fit and ratings before ordering. The part number is the best reference for compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this Siemens breaker stands out: it’s designed to slot into panels that require the NGB2B040 specification, ensuring identical electrical characteristics and a seamless mechanical fit. In retrofit projects or panel upgrades, using the exact part number minimizes modification needs and keeps protection aligned with your system’s design intent.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eUse cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eDirect replacement in Siemens-based panels when the NGB2B040 specification is specified\u003c\/li\u003e \u003cli\u003eRetrofits in commercial or light industrial electrical panels where a 40A, 2-pole, 600V breaker is required\u003c\/li\u003e \u003cli\u003eMaintenance intervals where preserving original protection characteristics simplifies compliance and safety checks\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eInstallation and safety considerations\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAlways ensure the power is fully shut off before attempting a breaker replacement\u003c\/li\u003e \u003cli\u003eVerify that the panel and circuit align with the NGB2B040 ratings and form factor\u003c\/li\u003e \u003cli\u003eWhen in doubt, consult a qualified electrician to confirm compatibility and perform the installation to code\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor reliable, field-proven protection that aligns with your Siemens system, choose the Siemens NGB2B040 Circuit Breaker. Its generation-ready design supports straightforward maintenance and seamless retrofits, helping you maintain safe, code-compliant electrical operation with confidence.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427474329762,"sku":"NGB2B040","price":2722.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-ngb2b040-circuit-breaker-40a-2-pole-600v-933.webp?v=1789728170","url":"https:\/\/www.ampstate.com\/products\/siemens-ngb2b040-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}