{"product_id":"siemens-hgb3b125b-circuit-breaker-trusted-supplier","title":"HGB3B125B | Siemens 125A 480V 3-Pole 35 kA Type HGB Bolt-On Thermal-Magnetic MCCB","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"451\" data-start=\"0\"\u003eThe Siemens HGB3B125B is a 125-amp, 480-volt molded case circuit breaker designed for dependable low-voltage protection in commercial and industrial systems. This three-pole breaker utilizes a thermal-magnetic trip unit to guard against overload and short-circuit conditions. With a 35 kA interrupt rating and bolt-on\/low-tab connection options, the HGB3B125B delivers secure installation and high-performance fault clearing.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCircuit Breaker\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHGB3B125B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMolded Case Circuit Breaker\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eType HGB Low Voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e480 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmperage Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e125 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterrupt Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e35 kA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrame Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e125 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrip Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThermal Magnetic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhase\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3-Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of Poles\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnection Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBolt-On \/ Low Tab\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWire Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8–1\/0 AWG (Bolt-On), 8–2\/0 AWG (Low Tab)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePanel Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTemperature Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.4 in H × 3 in W × 2.8 in D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndustrial and commercial low-voltage circuit protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About HGB3B125B\u003c\/h4\u003e\n\u003cp class=\"\" data-end=\"1074\" data-start=\"590\"\u003eThe HGB3B125B belongs to Siemens’ Type HGB low-voltage breaker family, engineered for durability and consistent protection in three-phase 480 VAC applications. Its panel-mount design, combined with both bolt-on and low-tab connection compatibility, supports flexible installation in various distribution assemblies. The breaker accepts wire sizes from 8 AWG to 1\/0 AWG (bolt-on) and 8 AWG to 2\/0 AWG (low tab), enhancing wiring versatility. With a thermal-magnetic trip mechanism and a 35 kA interrupt rating, the HGB3B125B provides reliable system protection in demanding environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-end=\"1102\" data-start=\"1085\"\u003eKey Features:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e125A, 480V rating: Supports medium–high capacity three-phase loads.\u003c\/li\u003e\n\u003cli\u003e35 kA interrupt rating: Handles high fault currents for improved system safety.\u003c\/li\u003e\n\u003cli\u003eThermal-magnetic trip: Provides overload and instantaneous fault protection.\u003c\/li\u003e\n\u003cli\u003e3-pole configuration: Designed for balanced three-phase distribution.\u003c\/li\u003e\n\u003cli\u003eBolt-on\/low-tab connection: Supports multiple installation methods.\u003c\/li\u003e\n\u003cli\u003ePanel-mount design: Integrates easily into low-voltage distribution panels.\u003c\/li\u003e\n\u003cli\u003eWide wire range: Accepts 8 AWG to 1\/0 or 2\/0 AWG depending on connection type.\u003c\/li\u003e\n\u003cli\u003eCompact dimensions: 5.4 in H × 3 in W × 2.8 in D for space-efficient installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe HGB3B125B delivers the reliability and precision required for molded case protection in industrial and commercial low-voltage systems.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":48493796786474,"sku":"HGB3B125B","price":615.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/HGB3B125B.webp?v=1716303429","url":"https:\/\/iqelectro.com\/products\/siemens-hgb3b125b-circuit-breaker-trusted-supplier","provider":"IQElectro","version":"1.0","type":"link"}