{"product_id":"siemens-ngg1b030-30a-347v-1-pole-circuit-breaker","title":"Siemens NGG1B030 - 30 A, 347 V, 1-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens NGG1B030 — a 30A, 347V, 1-pole molded case circuit breaker built for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. With a compact silhouette and Siemens engineering behind it, this breaker fits where space is at a premium without compromising protection.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e maximizes panel space and simplifies alignment in tight panel layouts, helping you fit more circuits without crowding the enclosure.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by combining thermal overload sensing with magnetic short-circuit protection, so you get fast, predictable tripping when it matters most.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e347V rating\u003c\/strong\u003e ideal for commercial and light industrial distribution networks where higher line voltage is used, ensuring reliable protection across the system.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e30A rating\u003c\/strong\u003e provides targeted protection for typical branch circuits such as lighting runs, small equipment feeders, and receptacle circuits—reducing the risk of damage from overcurrent while minimizing unnecessary trips.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e1-pole design\u003c\/strong\u003e offers dedicated protection for a single circuit, enabling clean, straightforward wiring and circuit isolation in panelboards.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e guaranteed with matching Siemens load centers and panelboards, ensuring proper fit, terminal torque, and seamless electrical performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePerfect for:\u003c\/strong\u003e commercial electrical rooms, light industrial installations, and spaces that use 347V distribution where reliable single-pole protection is needed. If you’re upgrading or replacing an existing Siemens panel, NGG1B030 ensures compatibility and minimizes downtime while maintaining system safety.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy it matters\u003c\/strong\u003e — A molded case breaker like the NGG1B030 isn’t just a plug-in component. It’s the first line of defense against overloads and short circuits, safeguarding wiring, equipment, and occupants. The thermal-magnetic trip mechanism provides predictable response, so you’re less likely to experience nuisance trips during normal inrush, and more likely to stay protected during faults.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eQuick specs at a glance\u003c\/strong\u003e:\n\u003c\/p\u003e \u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: NGG1B030\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 30A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 347V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 1\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e \u003cli\u003eCompatibility: Compatible with matching Siemens OEM load centers and panelboards\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical tips for installation and use: verify the panel’s acceptable part numbers before swapping, ensure the terminals are torqued to the manufacturer’s specification, and use this 1-pole 30A breaker for single-circuit protection within the 347V distribution system. By matching the NGG1B030 to your Siemens panel, you’ll maintain electrical coordination, simplify maintenance, and keep your electrical system running smoothly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355150143650,"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_a379ec75-9404-4768-98aa-d3f8bc20a4c0.png?v=1764689594","url":"https:\/\/www.ampstate.com\/products\/siemens-ngg1b030-30a-347v-1-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}