{"product_id":"siemens-neb2b040b-40a-600v-2-pole-bolt-on-circuit-breaker","title":"Siemens NEB2B040B - 40 A, 600 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens NEB2B040B is a rugged 2-pole bolt-on molded case circuit breaker designed to protect branch circuits from overcurrent and short circuits in panelboards and load centers. With a 40 A rating and 600 V capacity, this device is built to meet the demands of residential, commercial, and light industrial electrical systems while offering dependable protection and long-term performance.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands up in real-world service\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e delivers a rigid, vibration-resistant connection to the bus bar, reducing the risk of connection loosening in environments with mechanical noise or movement.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection by combining thermal overload sensing with magnetic short-circuit protection, delivering fast, predictable trips when faults occur.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e is purpose-built to work with matching Siemens OEM load centers and panelboards, making retrofits and replacements straightforward without compromising protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applicability\u003c\/strong\u003e suited for residential panels, commercial distribution, and light industrial installations where reliable branch-circuit protection matters most.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThe NEB2B040B is more than just a component—it's a reliable safeguard for wiring and equipment, helping prevent downstream damage, unplanned outages, and costly downtime. Its robust bolt-on configuration and precise thermal-magnetic protection are ideal for panel upgrades, service panel replacements, or new installations where a dependable, field-proven solution is required.\u003c\/p\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e NEB2B040B\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 2\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho benefits the most\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eElectricians and contractors performing panel replacements or upgrades in homes, offices, and light manufacturing facilities\u003c\/li\u003e \u003cli\u003eFacilities managers overseeing distributed electrical systems that require dependable, low-maintenance protection\u003c\/li\u003e \u003cli\u003eSpecifiers and engineers selecting compatible protection devices for Siemens panelboards and load centers\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor a reliable, field-tested solution that combines secure installation with precise protection, the Siemens NEB2B040B 40 A, 600 V, 2-pole bolt-on circuit breaker is a clear choice. Choose it for durable performance, compatibility with Siemens panel systems, and protection you can count on in demanding environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355135496354,"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_74ac4161-c07d-4769-aa2c-487f4c96580a.png?v=1764689532","url":"https:\/\/www.ampstate.com\/products\/siemens-neb2b040b-40a-600v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}