{"product_id":"siemens-ngb2b090b-90a-600v-2-pole-bolt-on-circuit-breaker","title":"Siemens NGB2B090B - 90 A, 600 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eProtect critical electrical circuits with the Siemens NGB2B090B 90A, 600V, 2-pole bolt-on molded case circuit breaker. Designed for reliable branch circuit overcurrent and short-circuit protection in panelboards and load centers, this unit blends rugged construction with precise safety mechanisms to keep power systems running smoothly.\u003c\/p\u003e \u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection that stays solid through load variations and panel activity.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by combining a thermal element for gradual overloads with a magnetic element for instantaneous faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e2-pole design at 90 A \/ 600 V\u003c\/strong\u003e supports balanced protection for multiwire circuits in residential, commercial, and light industrial settings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM load center compatibility\u003c\/strong\u003e with matching Siemens panels ensures seamless integration and certified performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: NGB2B090B\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 90 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 \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cp\u003eThe NGB2B090B isn’t just a breaker—it’s a reliable backbone for your distribution panels. The bolt-on mounting delivers a solid, low-impedance bus connection that stays dependable even in vibration-prone environments. The thermal-magnetic trip unit provides predictable protection: the thermal element handles sustained overloads, while the magnetic element responds instantly to short circuits, helping minimize damage to wiring and downstream equipment.\u003c\/p\u003e \u003ch3\u003eIdeal Use Scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eResidential sub-panels and main branch circuits requiring a robust 90 A protection point.\u003c\/li\u003e \u003cli\u003eCommercial lighting, HVAC, and receptacle circuits that demand dependable 600 V protection and quick interruption of faults.\u003c\/li\u003e \u003cli\u003eLight industrial panels where durable mounting and consistent protection under varying loads are essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp\u003eEngineered to pair with matching OEM Siemens load centers and panelboards, this 2-pole breaker provides predictable performance and straightforward integration. The bolt-on design enhances mechanical stability in installations subject to movement or vibration, while the dual-pole configuration ensures both conductors are protected together, simplifying panel layout and maintenance.\u003c\/p\u003e \u003ch3\u003ePractical Tips for Maximum Performance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eConfirm the panel’s voltage rating and available space to ensure a proper fit for 2-pole, 90A operation.\u003c\/li\u003e \u003cli\u003eTorque mounting screws according to the panel manufacturer’s specifications to maintain a solid bus connection.\u003c\/li\u003e \u003cli\u003eKeep a small stock of spare breakers on hand to minimize downtime during service or panel upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Siemens NGB2B090B 90A, 600V, 2-pole bolt-on breaker from AmpState for dependable circuit protection that supports safe, efficient power distribution across residential, commercial, and light industrial environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355138150562,"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_b8d012b1-e65c-4d7e-996f-0b1f3b282bdc.png?v=1764689575","url":"https:\/\/www.ampstate.com\/products\/siemens-ngb2b090b-90a-600v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}