{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1120-3ED12-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1120-3ED12-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VM1120-3ED12-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1120-3ED12-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VM1120-3ED12-0AA0, 1-pole molded case circuit breaker, 20 A rated at 40 °C, TM210 thermal-magnetic release, 53 kA interrupting at 240 V AC, 70 mm depth.","salesMarkdown":"## 1-pole MCCB for line protection — 20 A, TM210 release, 53 kA at 240 V The interrupting capacity is 53 kA at 240 V AC and 8 kA at 415 V AC — the 415 V figure is the one that governs most European 400 V distribution, so verify your available fault current against that lower value, not the 240 V headline. The 1-pole form factor (25.4 mm wide) fits a single module on a DIN rail, leaving adjacent slots for other breakers or accessories. The TM210 release is fixed — no interchangeable trip units — so the 20 A rating is baked in at the factory. Maximum power loss is 4 W. At 60 °C it derates to 19 A, and stays at 19 A through 70 °C. That means in a warm panel — say 50 °C internal ambient — you still get the full 20 A; no need to oversize for a typical industrial enclosure. Depth is 70 mm, height 130 mm, width 25.4 mm — a single 1-pole module.","metaTitle":"Siemens 3VM1120-3ED12-0AA0 SENTRON MCCB, 1-pole, 20 A, TM210","metaDescription":"Siemens SENTRON 3VM1120-3ED12-0AA0 molded case circuit breaker, 1-pole, 20 A rated at 40 °C, TM210 release, 53 kA at 240 V. Current lifecycle. Sourced to order.","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":"3VM1120-3ED12-0AA0","Height":"130 mm","Maximum":"320 A","Minimum":"1 s","at 240 V":"53 kA","at 415 V":"8 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]":"2.76 in","Width [In]":"1 in","Height [In]":"5.12 in","description":"circuit breaker 3VM1 IEC frame 160 breaking capacity class N Icu=25kA @ 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","Trip Indicator":"No","Number Of Poles":"1","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","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","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"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","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"415 V","operating voltage / at DC / rated value":"125 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"N","Mechanical Service Life (Operating Cycles) / Typical":"15 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","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=575039&mlfb=3VM1120-3ED12-0AA0"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VM1120-3ED12-0AA0 at 415 V?","answer":"8 kA at 415 V AC. That is the figure to use for selectivity studies in 400 V distribution — the 53 kA at 240 V is a higher headline number but does not apply at typical European line voltage."},{"question":"Where can I buy 3VM1120-3ED12-0AA0?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"What is the width of 3VM1120-3ED12-0AA0?","answer":"25.4 mm — a standard 1-pole module width for DIN-rail mounting."},{"question":"What compliance documentation is available for this MCCB?","answer":"The SENTRON series carries CE, UL, and CSA certifications as standard. RoHS and REACH declarations are available from Siemens on request. The insulation voltage is rated at 500 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1120-3ED12-0AA0","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/3VM1120-3ED12-0AA0 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}}