{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1120-3EE46-0AA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1120-3EE46-0AA2","canonicalUrl":"https://aoctrl.com/siemens/3VM1120-3EE46-0AA2","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1120-3EE46-0AA2","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 3VM1120-3EE46-0AA2, 4-pole molded case circuit breaker, 20 A rated continuous current, TM220 thermal-magnetic release, N switching capacity class, 76 kA at 240 V AC, 53 kA at 415 V AC.","salesMarkdown":"The SENTRON 3VM1120-3EE46-0AA2 is a 4-pole molded case circuit breaker (MCCB) rated for 20 A continuous current across the 40 °C to 55 °C ambient range, with only a 1 A derating step at 60 °C. That thermal stability means it holds its full rating in a warm enclosure without oversizing the frame — useful when the panel sits near a motor or drive. The interrupting capacity tells the real story for fault coordination: 76 kA at 240 V AC, 53 kA at 415 V AC, 32 kA at 440 V AC, and 11.9 kA at 500 V AC. The N switching capacity class means this breaker is designed for normal-duty industrial distribution — not the high-stress utility tie or large motor branch that demands the S class. For most panelboard and sub-distribution applications, the N class provides the right balance of fault-clearing muscle without paying for a frame you don't need. The TM220 overcurrent release is a thermal-magnetic type — thermal element for overload protection, magnetic trip for short-circuit. The LI protective function confirms it provides long-time delay and instantaneous protection, no electronic adjustment. That makes it a straightforward drop-in for standard feeder or branch protection where you don't need the selectivity tuning of an electronic trip unit. The main current circuit uses box terminals with front connection — standard for panelboard and switchboard mounting. The frame size is rated for up to 160 A, so this 20 A breaker sits in a physically larger frame than its continuous rating suggests. That's typical for the 3VM platform: the frame is sized for the interrupting capacity, not the amp rating. Verify the mounting footprint against your existing bus bar or DIN-rail adapter before committing the panel layout. Front IP40 protection. No motor drive option and no auxiliary contacts from the factory. ## Environmental limits and power loss Maximum power loss 12 W.","metaTitle":"SENTRON 3VM1120-3EE46-0AA2 4-Pole MCCB, 20A, 76kA at 240V","metaDescription":"SENTRON 3VM1120-3EE46-0AA2 molded case circuit breaker, 4-pole, 20A rated, TM220 release. Interrupting capacity 76kA at 240V AC, 53kA at 415V AC. Current lifecycle stage, available","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"title":"3VM1120-3EE46-0AA2","at 240 V":"76 kA","at 415 V":"53 kA","at 440 V":"32 kA","at 500 V":"11.9 kA","at 40 °C":"20 A","at 45 °C":"20 A","at 50 °C":"20 A","at 55 °C":"20 A","at 60 °C":"19 A","at 65 °C":"19 A","at 70 °C":"19 A","description":"circuit breaker 3VM1 IEC frame 160 breaking capacity class N Icu=25kA @ 415V 4-pole, line protection TM220, ATFM, In=20A overload protection Ir=14A...20A short-circuit protection Ii=16 x In N conductor unprotected terminal connection","Number of poles":"4","Product version":"Line protection","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"12 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"20 A","Rated insulation voltage Ui":"690 V","Ground fault monitoring version":"Without","Design of the overcurrent release":"TM220","Protection class IP / on the front":"IP40","Design of the N-conductor protection":"Without","Reference code / acc. to DIN EN 81346-2":"Q","Max. rated operational voltage Ue with DC":"500 V","Product extension / optional / motor drive":"No","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"LI","Switching capacity class of the circuit breaker":"N","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"500 V","Type of electrical connection / for main current circuit":"box terminal","Arrangement of electrical connectors / for main current circuit":"Front connection"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/890a9c4e8f724baae13c5de28442f149.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=682794&mlfb=3VM1120-3EE46-0AA2"},"ai":{"faq":[{"question":"What type of overcurrent release does this MCCB use?","answer":"The TM220 is a thermal-magnetic release providing LI protection — long-time delay for overloads and instantaneous magnetic trip for short-circuits. No electronic adjustment or ground fault monitoring is included."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1120-3EE46-0AA2","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3VM1120-3EE46-0AA2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}