{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1120-4ED12-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1120-4ED12-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VM1120-4ED12-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1120-4ED12-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VM1120-4ED12-0AA0, 1-pole molded case circuit breaker, 20 A rated current, TM210 thermal-magnetic release, 76 kA at 240 VAC, 9 kA at 415 VAC.","salesMarkdown":"## What this MCCB does — and what the ratings actually mean for your panel Its 20 A continuous rating holds across 40 °C to 55 °C without derating — only at 60 °C does it step down to 19 A, so for most panel environments you get the full 20 A. The interrupting capacity tells the real story: 76 kA at 240 VAC means it can clear a massive fault on a 240 V distribution bus, but drops to 9 kA at 415 VAC — that's still enough for most 415 V feeder applications, but if your available fault current at the panel exceeds 9 kA at 415 V, this breaker won't coordinate. At 25.4 mm wide (one inch), this single-pole MCCB snaps onto standard DIN rail. Depth of 70 mm and height of 130 mm — check gland-plate clearance if you're back-panel mounting. Front-face protection is IP40, so it's fine for dry indoor panels but not washdown zones. The 500 V rated insulation voltage (Ui) covers most 400 V line-to-line systems with headroom.","metaTitle":"Siemens 3VM1120-4ED12-0AA0 SENTRON MCCB, 1-Pole, 20 A, 76 kA","metaDescription":"Siemens SENTRON 3VM1120-4ED12-0AA0 molded case circuit breaker, 1-pole, 20 A rated, 76 kA at 240 VAC interrupting capacity. TM210 release. Current lifecycle status. Sourced to orde","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"25.4 mm","title":"3VM1120-4ED12-0AA0","Height":"130 mm","at 240 V":"76 kA","at 415 V":"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","Depth [In]":"2.8 in","Width [In]":"1 in","Height [In]":"5.1 in","description":"circuit breaker 3VM1 IEC frame 160 breaking capacity class S Icu=36kA @ 240V 1-pole, line protection TM210, FTFM, In=20A overload protection Ir=20A, not adjustable short-circuit protection Ii=16 x In nut keeper kit","Number Of Poles":"1","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":"4 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Courant permanent assigné Iu":"20 A","Ground-Fault Monitoring Version":"Without","Tension assignée d'isolement Ui":"500 V","Design Of The Overcurrent Release":"TM210","Design Of Short-Circuit Protection":"For switching capacity values in DC power systems, see the 3VA Molded Case Circuit Breaker Manual; link available under Service & Support in the last chapter","protection class IP / on the front":"IP40","reference code / acc. to IEC 81346-2":"Q","Max. rated operational voltage Ue with DC":"125 V","Product Extension / Optional / Motor Drive":"No","Adjustable response value current / lg min.":"20 A","Adjustable response value current / li max.":"320 A","Adjustable response value current / li min.":"320 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"S","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"415 V","Mechanical Service Life (Switching Cycles) / Typical":"12 000","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front connection","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6,5","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"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=575041&mlfb=3VM1120-4ED12-0AA0"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VM1120-4ED12-0AA0 at 240 V and 415 V?","answer":"76 kA at 240 VAC and 9 kA at 415 VAC. The 415 V figure is the limiting one for coordination studies — verify your available fault current at that voltage level."},{"question":"What is the width of this MCCB?","answer":"25.4 mm (1 inch) wide — single-pole, fits standard DIN-rail spacing."},{"question":"Where can I buy 3VM1120-4ED12-0AA0 and how is it quoted?","answer":"Sourced to order against an RFQ through independent distribution. Submit a request with your quantity and target delivery window; availability and current pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1120-4ED12-0AA0","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/3VM1120-4ED12-0AA0 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}}