{"product_id":"ngb3b040b","title":"Siemens NGB3B040B - 40A, 3-Pole, Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens NGB3B040B is a 40A, 3-pole circuit breaker engineered to safeguard three-phase electrical systems in demanding environments. Its three-pole configuration is designed for flexible installation in panelboards, switchboards, and control panels, delivering dependable overcurrent protection where it matters most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e40A current rating.\u003c\/strong\u003e Precise protection for feeders and motor circuits in industrial and commercial settings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design.\u003c\/strong\u003e Ideal for three-phase distribution, reducing wiring complexity and ensuring protection across all three phases.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application.\u003c\/strong\u003e Suitable for industrial, commercial, and OEM deployments where safe operation in distribution panels and motor control centers is essential.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDependable protection and safe operation.\u003c\/strong\u003e Specifically engineered to maintain system integrity in demanding environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFlexible mounting in common enclosure types.\u003c\/strong\u003e Fits panelboards, switchboards, and control panels, supporting a wide range of installation layouts.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUse cases and benefits in practice:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMotor control centers: Protects three-phase motors and associated feeders from overcurrent faults, helping minimize downtime and equipment wear.\u003c\/li\u003e \u003cli\u003eIndustrial control panels: Provides reliable protection for programmable controllers, sensors, and actuated loads within a centralized panel.\u003c\/li\u003e \u003cli\u003eCommercial electrical rooms: Safeguards feeders and distribution circuits feeding HVAC, pumps, and processing equipment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy choose a 3-pole solution for three-phase systems? A single- or two-pole breaker cannot protect all three conductors in a three-phase circuit. The 3-pole design ensures each phase is protected together, simplifying wiring and enhancing safety in distribution panels and motor control centers.\u003c\/p\u003e \u003cp\u003eNote: For precise installation, ensure compatibility with your enclosure and follow local electrical codes and Siemens guidance during wiring and mounting.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default","offer_id":46390628581538,"sku":"NGB3B040B","price":684.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/circuit_breaker_generic_02841a15-53d8-4c5c-93d9-612449fcb527.png?v=1765378555","url":"https:\/\/www.ampstate.com\/products\/ngb3b040b","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}