{"product_id":"siemens-ngb2b050b-50a-600v-2-pole-bolt-on-circuit-breaker","title":"Siemens NGB2B050B - 50 A, 600 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered for dependable branch-circuit protection, the Siemens NGB2B050B is a 2-pole, 50-amp, 600-volt bolt-on molded case circuit breaker designed to secure panelboards and load centers. Its robust bolt-on mounting delivers a rigid, vibration-resistant bus connection, helping maintain clean, consistent electrical contact in environments where vibrations or equipment operation can loosen connections over time.\u003c\/p\u003e \u003ch2\u003eKey features that matter in the field\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-on mounting for reliability\u003c\/strong\u003e – A secure, vibration-resistant connection minimizes bus-bar movement, reducing arcing risks and ensuring stable performance in daily use and during startup surges.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e – Combines thermal overload protection with magnetic short-circuit protection, delivering repeatable, predictable trips that protect wiring and loads from damage.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e2-pole, 50A, 600V rating\u003c\/strong\u003e – Suitable for higher-demand circuits while providing the protection you need for both hot legs and shared neutral configurations common in modern panelboards.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e – Specifically designed to work with matching Siemens OEM load centers and panelboards, helping you achieve a seamless fit, consistent trip characteristics, and streamlined replacement.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e – Ideal for residential, commercial, and light industrial circuits where durable, code-compliant overcurrent and short-circuit protection is required.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy it matters for your project\u003c\/h2\u003e\n\u003cp\u003eThe NGB2B050B isn’t just a breaker spec sheet item—it’s a practical solution for protecting branch circuits against overcurrent events that could damage wiring, insulation, or connected equipment. The bolt-on design is especially valuable in installations where panel vibration, device replacement, or retrofit work demands a solid, long-lasting connection. The thermal-magnetic trip ensures fast, reliable response to both overloads and short circuits, reducing the risk of fire or equipment failure in critical electrical systems.\u003c\/p\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or replacing breakers in residential panelboards that demand robust, field-replaceable hardware with secure mounting.\u003c\/li\u003e \u003cli\u003eCommercial office builds or retrofit projects where panels are subject to vibration or movement and a dependable bus connection is essential.\u003c\/li\u003e \u003cli\u003eLight industrial applications with motor-driven loads or HVAC circuits requiring reliable short-circuit protection and stable trip performance.\u003c\/li\u003e \u003cli\u003eNew installations where Siemens OEM compatibility guarantees consistent protection characteristics across the panel lineup.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eSpecifications at a glance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: NGB2B050B\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 50 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 600 V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 2\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical installation tips\u003c\/h2\u003e\n\u003cp\u003eEnsure the breaker is installed in a Siemens-compatible panelboard or load center and that the wiring gauge and conductor insulation meet the device’s rating. Follow the manufacturer's torque and fastening guidance for the bolt-on terminals to maintain a secure connection. For ongoing reliability, routinely inspect the breaker and surrounding bus connections during servicing, and replace any unit showing signs of wear or overheating. Always de-energize and lockout\/tagout the system before performing electrical work.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355137986722,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-ngb2b050b-50-a-600-v-2-pole-bolt-on-circuit-breaker-679.webp?v=1788734689","url":"https:\/\/www.ampstate.com\/products\/siemens-ngb2b050b-50a-600v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}