{"product_id":"3va5340-5ef31-0aa0","title":"3VA5340-5EF31-0AA0 - 400A Class MJAS 3-Pole Circuit Breaker","description":"\u003cp\u003e\u003cstrong\u003e3VA5340-5EF31-0AA0 - 400A Class MJAS 3-Pole Circuit Breaker\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWhen you’re dealing with 400-amp loads, you don’t want to guess if your breaker can handle it—you want something you know will. The Siemens 3VA5340-5EF31-0AA0 is built for that kind of job. It’s a 3-pole thermal magnetic circuit breaker from the 3VA5 line, designed to protect your system without interfering with normal operation. One thing people like about this model is the adjustability. The overload protection can be set anywhere from 320A up to 400A, so you’re not locked into a fixed setting. The instantaneous trip (short-circuit protection) is adjustable too, from 5 to 10 times the rated current. That gives you more control when coordinating protection across a system and avoiding unnecessary trips. It’s also rated at 35 kA at 480V AC, which puts it right where it needs to be for many commercial and industrial setups. Whether you’re replacing an existing unit or building out a new panel, this breaker is made to handle real-world conditions without being overly complicated.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features and Benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e400A capacity for higher-load applications\u003c\/li\u003e\n\u003cli\u003eThermal magnetic trip unit (TM240) for combined protection\u003c\/li\u003e\n\u003cli\u003eAdjustable overload range: 320A to 400A\u003c\/li\u003e\n\u003cli\u003eInstantaneous trip adjustable from 5–10x\u003c\/li\u003e\n\u003cli\u003e35 kA interrupting rating at 480V AC\u003c\/li\u003e\n\u003cli\u003e3-pole configuration for three-phase systems\u003c\/li\u003e\n\u003cli\u003ePart of the Siemens 3VA5 series\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\u003ePart Number:\u003c\/strong\u003e 3VA5340-5EF31-0AA0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e 3VA5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e 3VA53\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Size:\u003c\/strong\u003e 400A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupting Class:\u003c\/strong\u003e Class M (MJAS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterrupting Rating:\u003c\/strong\u003e 35 kA @ 480V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrip Unit:\u003c\/strong\u003e TM240 (Thermal Magnetic)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverload Protection (Ir):\u003c\/strong\u003e 320A – 400A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShort-Circuit Protection (Ii):\u003c\/strong\u003e 5–10x\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 9.8\" H x 6.3\" W x 5.9\" D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLugs:\u003c\/strong\u003e Not included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial Compliance and Certifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThis breaker is UL-listed and built to meet standard North American electrical requirements. It’s designed for safe operation in systems where consistent performance matters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhere It Works Best\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eYou’ll typically see this used in commercial buildings, industrial facilities, and larger electrical distribution systems. It’s a good fit for panelboards, switchgear, and motor control setups that require 400A protection and some level of adjustment.\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","offer_id":51697449664811,"sku":"3VA5340-5EF31-0AA0","price":1850.0,"currency_code":"USD","in_stock":false}],"url":"https:\/\/store.circuitbreakersuperstore.com\/products\/3va5340-5ef31-0aa0","provider":"CIRCUIT BREAKER SUPERSTORE®","version":"1.0","type":"link"}