{"product_id":"3va5330-5ec31-0aa0","title":"3VA5330-5EC31-0AA0 - 300A Class MJAS 3-Pole Circuit Breaker","description":"\u003cp\u003e\u003cstrong\u003e3VA5330-5EC31-0AA0 - 300A Class MJAS 3-Pole Circuit Breaker\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Siemens 3VA5330-5EC31-0AA0 is a solid, no-nonsense 300A circuit breaker built for people who just need things to work the way they should. It’s part of the 3VA5 series, which is widely used in commercial and industrial setups, so it’s not some niche or hard-to-match component. This one uses a thermal magnetic trip unit, meaning it handles both overloads and short circuits without requiring anything complicated to set up. The overload protection is fixed at 300 amps—so there’s nothing to dial in—and the instantaneous trip can be adjusted between 5 to 10 times the rated current. That gives you some flexibility where it actually matters. With a 35 kA rating at 480V, it’s built to deal with higher fault levels without hesitation. It’s the kind of breaker you’d drop into a panel and not think about again—which, honestly, is exactly what most people want.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e300A rating for steady, everyday load protection\u003c\/li\u003e\n\u003cli\u003e3-pole design for standard three-phase systems\u003c\/li\u003e\n\u003cli\u003eThermal magnetic trip unit—simple and reliable\u003c\/li\u003e\n\u003cli\u003eFixed overload protection (no guesswork)\u003c\/li\u003e\n\u003cli\u003eAdjustable instantaneous trip (5–10x) for short-circuit tuning\u003c\/li\u003e\n\u003cli\u003e35 kA interrupting capacity at 480V AC\u003c\/li\u003e\n\u003cli\u003e400A frame (3VA5 series)\u003c\/li\u003e\n\u003cli\u003eBuilt for consistent performance in demanding setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 3VA5330-5EC31-0AA0\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3VA5\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 300A\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Size:\u003c\/strong\u003e 400A\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Unit:\u003c\/strong\u003e Thermal Magnetic (TM230)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverload Protection:\u003c\/strong\u003e Fixed at 300A\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShort-Circuit Protection:\u003c\/strong\u003e Adjustable (5–10x In)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupting Rating:\u003c\/strong\u003e 35 kA @ 480V AC\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eHeight: 9.8 in\u003c\/li\u003e\n\u003cli\u003eWidth: 6.3 in\u003c\/li\u003e\n\u003cli\u003eDepth: 5.9 in\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLugs:\u003c\/strong\u003e Not included\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\u003cul\u003e\n\u003cli\u003eThis breaker is UL listed, so it meets the standard requirements for use in U.S. electrical systems. It’s built to handle typical commercial and industrial conditions without cutting corners on safety or consistency.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eYou’ll usually see this used in: Commercial buildings Industrial panels and machinery Main or sub-distribution panels Replacement jobs where specs need to match closely If you’re looking for something straightforward that does its job without extra complexity, this is exactly that.\u003c\/li\u003e\n\u003c\/ul\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","offer_id":51697447502123,"sku":"3VA5330-5EC31-0AA0","price":1850.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/3va5330-5ec31-0aa0","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}