{"product_id":"siemens-ngb3b020b-20a-600v-3-pole-bolt-on-circuit-breaker","title":"Siemens NGB3B020B - 20 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens \u003cstrong\u003eNGB3B020B\u003c\/strong\u003e is a 20A, 600V, 3-pole bolt-on molded case circuit breaker engineered to deliver dependable branch-circuit protection for panelboards and load centers. Designed for challenging electrical environments, this device combines a secure mounting method with precise protection to help keep systems up and running.\u003c\/p\u003e \u003ch3\u003eWhy this bolt-on breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection, reducing the risk of loosening connections in busy electrical rooms and equipment racks.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection across temperature variations — fast enough to interrupt short circuits while avoiding nuisance trips during normal operation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e is formulated to work with matching Siemens panelboards and load centers, ensuring proper fit, alignment, and coordinated protection across the distribution system.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e suited for residential, commercial, and light industrial environments where reliable 3-phase protection is required.\u003c\/li\u003e\n\u003c\/ul\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 NGB3B020B\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 20A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3\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\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cp\u003eUse the Siemens NGB3B020B when upgrading or installing panelboards and load centers that require robust 3-pole protection for three-phase circuits. It’s a solid choice for distribution feeders in commercial spaces, protection of equipment in light industrial settings, or replacing worn breakers in compatible Siemens systems. The bolt-on design is particularly advantageous in installations where vibration is a concern or where a durable, rigid connection is essential to maintain electrical integrity over time.\u003c\/p\u003e \u003ch3\u003ePractical notes for installers\u003c\/h3\u003e\n\u003cp\u003eEnsure compatibility with your Siemens OEM load centers and panelboards by matching the NGB3B020B to the corresponding enclosure type. When installing, follow standard bolt-on procedures to achieve a secure bus connection and verify the mechanical alignment to prevent mis-tripping. Use as part of a coordinated protection scheme to complement other Siemens devices in the same distribution system, delivering reliable protection for critical loads without compromising accessibility or serviceability.\u003c\/p\u003e \u003cp\u003eWith the Siemens NGB3B020B, you gain a dependable, purpose-built solution for 3-pole overcurrent protection that performs consistently in diverse environments—from compact residential panels to bustling commercial and light industrial electrical rooms.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355138478242,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-ngb3b020b-20-a-600-v-3-pole-bolt-on-circuit-breaker-262.webp?v=1788734779","url":"https:\/\/www.ampstate.com\/products\/siemens-ngb3b020b-20a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}