{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1120-4ED22-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1120-4ED22-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VM1120-4ED22-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1120-4ED22-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VM1120-4ED22-0AA0, 2-pole molded case circuit breaker, 20 A (40 °C), 121 kA at 240 V, TM210 release, IP40 front.","salesMarkdown":"The Siemens SENTRON 3VM1120-4ED22-0AA0 is a 2-pole molded case circuit breaker (MCCB) from the 3VM series, rated 20 A continuously at 40 °C with an S switching capacity class — meaning it handles high fault currents without needing an upstream fuse for coordination. The TM210 thermal-magnetic release provides LI protection (long-time and instantaneous), with an adjustable instantaneous pickup up to 320 A. The 20 A rating holds flat from 40 °C through 55 °C — no derating needed in a warm enclosure — and only drops to 19 A at 60 °C and above. That's unusual; most MCCBs start stepping down at 40 °C. The 2-pole configuration with no neutral conductor upgrade option tells you this is a line-protection breaker for single-phase or DC circuits, not a 3-phase main. The LI protection curve means it has long-time (thermal) delay for overloads and instantaneous magnetic trip for short circuits. The adjustable instantaneous pickup (li max 320 A) lets you dial in coordination with downstream feeders without swapping the breaker. ## Panel integration Dimensions are 70 mm deep, 50.8 mm wide, 130 mm tall — a 2-inch wide footprint that fits a standard 2-pole MCCB slot in most Siemens SENTRON distribution panels.","metaTitle":"Siemens 3VM1120-4ED22-0AA0 SENTRON MCCB, 2-pole, 20 A, 121 k","metaDescription":"Siemens SENTRON 3VM1120-4ED22-0AA0 molded case circuit breaker, 2-pole, 20 A rated at 40 °C, 121 kA at 240 V. Current lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"50.8 mm","Height":"130 mm","at 240 V":"121 kA","at 415 V":"76 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]":"2 in","Height [In]":"5.1 in","Number Of Poles":"2","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":"8 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"500 V","Ground-Fault Monitoring Version":"Without","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":"250 V","Product Extension / Optional / Motor Drive":"No","Adjustable response value current / li max.":"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 voltage Ue with AC 50/60Hz":"415 V","Mechanical Service Life (Switching Cycles) / Typical":"15 000","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front connection"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"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=575042&mlfb=3VM1120-4ED22-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VM1120-4ED22-0AA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 3VM1120-4ED22-0AA0?","answer":"Submit an RFQ through this listing; current pricing and stock levels are confirmed at quote time through independent distribution channels."},{"question":"What is the interrupting rating of this MCCB?","answer":"It interrupts 121 kA at 240 V AC and 76 kA at 415 V AC, placing it in the S switching capacity class for high-fault applications."},{"question":"Does this breaker have an electronic trip unit or communication?","answer":"No — it uses a fixed TM210 thermal-magnetic release with LI protection and no communication function or ground-fault monitoring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1120-4ED22-0AA0","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/3VM1120-4ED22-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}