{"product_id":"hgb3b125b","title":"HGB3B125B - 125Amp Circuit Breaker","description":"\u003cp\u003e\u003cstrong\u003eHGB3B125B - 125Amp Circuit Breaker\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe HGB3B125B is a 125-amp, 3-pole HGB G-frame circuit breaker built for compatible low-voltage panelboard applications where dependable overload and short-circuit protection are essential. Its compact dimensions—approximately 3 inches wide by 5.4 inches high by 2.8 inches deep—also make physical verification simple when you're matching an existing panelboard installation. For applications calling specifically for an HGB3B125B 125A 3-pole circuit breaker, the combination of HGB frame construction, thermal-magnetic protection, defined interrupting ratings, and Cu\/Al conductor compatibility gives you the key specifications needed to evaluate the fit with confidence.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e125A current rating: Designed for circuits and compatible panelboard applications requiring a 125-amp breaker.\u003c\/li\u003e\n\u003cli\u003e3-pole configuration: Provides simultaneous circuit protection across three poles for suitable three-phase electrical systems.\u003c\/li\u003e\n\u003cli\u003eThermal-magnetic trip unit: Combines thermal overload response with magnetic short-circuit protection.\u003c\/li\u003e\n\u003cli\u003eHGB G-frame design: Built for compatible low-voltage panelboard mounting applications using the HGB frame configuration.\u003c\/li\u003e\n\u003cli\u003eLoad-side lug configuration: Equipped with TC1GG20 load-side lugs only, an important detail when matching an existing installation.\u003c\/li\u003e\n\u003cli\u003eCopper and aluminum conductor compatibility: Accepts 8 AWG to 1\/0 AWG Cu\/Al conductors, providing flexibility for approved wiring applications.\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCatalog Number \/ MFN:\u003c\/strong\u003e HGB3B125B\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Low-voltage panelboard circuit breaker\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Type:\u003c\/strong\u003e HGB G-Frame\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 125A\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Unit:\u003c\/strong\u003e Thermal-magnetic\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupting Rating at 600Y\/347V:\u003c\/strong\u003e 14 kAIC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupting Rating at 480Y\/277V:\u003c\/strong\u003e 35 kAIC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLug Configuration:\u003c\/strong\u003e Load-side lugs only\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLug Type:\u003c\/strong\u003e TC1GG20\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWire Range:\u003c\/strong\u003e 8 AWG to 1\/0 AWG\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductor Compatibility:\u003c\/strong\u003e Copper \/ Aluminum (Cu\/Al)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (W x H x D):\u003c\/strong\u003e 3 x 5.4 x 2.8 in.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet Weight:\u003c\/strong\u003e 2.756 lb.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 887621219901\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Mexico\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial Compliance and Certifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe HGB3B125B circuit breaker is UL Listed, providing an important certification reference when evaluating the breaker for a compatible electrical installation. Environmental documentation associated with this model references WEEE (2012\/19\/EU) take-back obligations and REACH Article 33 information. RoHS substance-restriction compliance is listed as not available in the supplied technical data, and a SCIP number is not provided.\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe HGB3B125B 125A 3-pole circuit breaker is best suited to compatible low-voltage panelboards and commercial or industrial electrical distribution systems that specifically require an HGB G-frame breaker with this amperage, pole configuration, trip technology, and interrupting capacity. Its thermal-magnetic trip mechanism makes it appropriate where protection against both sustained overload conditions and short circuits is required.\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\n\u003cdiv\u003e\n\u003cblockquote\u003e\n\u003cp style=\"font-size: 12px;\"\u003e\u003cem\u003eUse of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer.\u003cstrong\u003e CIRCUIT BREAKER SUPERSTORE®\u003c\/strong\u003e is an independent reseller and is \u003cstrong\u003enot \u003c\/strong\u003ean authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do \u003cstrong\u003enot\u003c\/strong\u003e apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 12px;\"\u003e\u003cem\u003eSiemens®, I-T-E®, and Murray® are registered trademarks of Siemens AG. Products sold are surplus, used, or refurbished and are \u003cstrong\u003eNOT \u003c\/strong\u003esupplied by Siemens AG or its affiliates.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"SIEMENS","offers":[{"title":"New In Box","offer_id":50454378479915,"sku":"HGB3B125B","price":701.43,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/hgb3b125b","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}