{"product_id":"heg3b015b-circuit-breaker-600v-15a-3p-65ka480v-bolt-on-vl-series","title":"Siemens HEG3B015B Circuit Breaker | 15A 3-Pole 600V 65kA@480V Bolt-On | VL Series MCCB","description":"\u003cdiv class=\"product-description\"\u003e\n\n  \u003ch2\u003eSiemens HEG3B015B — 15A 3-Pole Molded Case Circuit Breaker\u003c\/h2\u003e\n\n  \u003cp\u003eThe \u003cstrong\u003eSiemens HEG3B015B\u003c\/strong\u003e is a high-interrupting capacity, thermal magnetic molded case circuit breaker (MCCB) from the \u003cstrong\u003eSiemens VL Series\u003c\/strong\u003e. Rated at \u003cstrong\u003e15 Amps, 600V AC, 3-Pole\u003c\/strong\u003e, with an exceptional \u003cstrong\u003e65kA interrupting rating at 480V\u003c\/strong\u003e, this breaker is engineered for demanding industrial and commercial power distribution applications where standard-capacity breakers fall short.\u003c\/p\u003e\n\n  \u003cp\u003eWith a bolt-on connection type and Long-Time \/ Instantaneous (LI) trip functions, the HEG3B015B delivers precise, reliable overcurrent protection in panelboards, switchboards, and motor control centers.\u003c\/p\u003e\n\n  \u003chr\u003e\n\n  \u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\n  \u003ctable\u003e\n    \u003ctbody\u003e\n      \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSiemens\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHEG3B015B\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVL Series\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrame Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHEG (H-Frame)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAmpere Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e15A\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e600V AC\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-Pole (3P)\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\u003eInterrupting Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e65kA @ 480V\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterrupting Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh Interrupting Capacity\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\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTrip Unit 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\u003eTrip Functions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLI — Long-Time \u0026amp; Instantaneous\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReverse Feed Suitable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLugs Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUL Listed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003chr\u003e\n\n  \u003ch2\u003eWhy Choose the Siemens HEG3B015B?\u003c\/h2\u003e\n\n  \u003cp\u003eThe HEG3B015B stands out from standard-capacity circuit breakers because of its \u003cstrong\u003e65kA interrupting rating at 480V\u003c\/strong\u003e — a critical specification in high-fault-current environments like manufacturing facilities, data centers, industrial plants, and large commercial buildings. Where lower-rated breakers fail under extreme fault conditions, the HEG3B015B is engineered to interrupt safely and protect your system.\u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHigh fault current protection:\u003c\/strong\u003e 65kA AIC @ 480V handles severe short-circuit conditions without failure\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThermal magnetic trip unit:\u003c\/strong\u003e Provides both overload (thermal) and short-circuit (magnetic) protection in a single unit\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBolt-On mounting:\u003c\/strong\u003e Ensures a secure, low-resistance connection to the bus bar — critical for reliability and NEC compliance\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eReverse feed capable:\u003c\/strong\u003e Allows flexible installation in panelboards and switchboards\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLI trip functions:\u003c\/strong\u003e Long-Time and Instantaneous trip offer precise, coordinated protection for downstream equipment\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUL Listed:\u003c\/strong\u003e Meets U.S. safety standards for commercial and industrial electrical installations\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\n  \u003cul\u003e\n    \u003cli\u003eIndustrial motor control centers (MCCs)\u003c\/li\u003e\n    \u003cli\u003eCommercial panelboards and switchboards\u003c\/li\u003e\n    \u003cli\u003eManufacturing and process plants\u003c\/li\u003e\n    \u003cli\u003eData centers and critical infrastructure\u003c\/li\u003e\n    \u003cli\u003eHVAC and mechanical equipment protection\u003c\/li\u003e\n    \u003cli\u003eBranch circuit protection in high-fault-current environments\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr\u003e\n\n  \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n  \u003cp\u003e\u003cstrong\u003eWhat does 65kA @ 480V mean?\u003c\/strong\u003e\u003cbr\u003e\n  It means this circuit breaker can safely interrupt a fault current of up to 65,000 amperes at 480 volts — one of the highest ratings available for a 15A breaker, making it suitable for installations close to large utility or transformer sources.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eWhat is the difference between HEG and HGB\/NGG Siemens breakers?\u003c\/strong\u003e\u003cbr\u003e\n  The HEG frame offers a higher interrupting capacity (65kA @ 480V) compared to the NGG (25kA @ 480V) and HGB (35kA @ 480V) frames. Choose the HEG when your system's available fault current exceeds what lower-rated frames can handle.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eIs the HEG3B015B suitable for reverse feed?\u003c\/strong\u003e\u003cbr\u003e\n  Yes. The HEG3B015B is approved for reverse feed applications, giving installers greater flexibility in panelboard and switchboard configurations.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eAre lugs included with the HEG3B015B?\u003c\/strong\u003e\u003cbr\u003e\n  No. Lugs are not included and must be ordered separately based on your wire gauge requirements.\u003c\/p\u003e\n\n  \u003cp\u003e\u003cstrong\u003eWhat trip functions does this breaker include?\u003c\/strong\u003e\u003cbr\u003e\n  The HEG3B015B includes LI trip functions: Long-Time (overload protection) and Instantaneous (short-circuit protection), standard for thermal magnetic MCCBs.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"New","offer_id":48396206768376,"sku":"HEG3B015B-N","price":396.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0826\/1209\/3176\/files\/Photoroom_20260210_230721_5e0aebd0-388a-4d4a-abf2-86d0db555c07.jpg?v=1778795159","url":"https:\/\/alphabreakersandcontrols.com\/products\/heg3b015b-circuit-breaker-600v-15a-3p-65ka480v-bolt-on-vl-series","provider":"Alpha Breakers \u0026 Controls","version":"1.0","type":"link"}