{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1020-4ED42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1020-4ED42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VM1020-4ED42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1020-4ED42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON series, Molded case circuit breaker, 3VM1020-4ED42-0AA0, 4-pole, 20 A rated current, TM210 thermal-magnetic release, breaking capacity 121 kA at 240 V AC.","salesMarkdown":"## Siemens SENTRON 3VM1020-4ED42-0AA0 — 4-Pole MCCB with TM210 Release Its interrupting capacity is rated at 121 kA at 240 V AC, 76 kA at 415 V, 40 kA at 440 V, and 12 kA at 500 V — figures that define the maximum fault current it can safely clear at each voltage level without upstream coordination failure. The breaker holds its full 20 A rating from 40 °C through 55 °C ambient, then derates to 19 A at 60–65 °C and 18 A at 70 °C, so panel internal temperature rise matters for continuous loading. The 3VM1020-4ED42-0AA0 carries a current production lifecycle status — it remains in active manufacture as of the latest Siemens lifecycle records, with no announced end-of-life or last-time-buy window. ## Physical Fit & Panel Integration The breaker measures 101.6 mm wide, 130 mm tall, and 70 mm deep — a 4-inch wide footprint that occupies four standard DIN-rail module spaces in a distribution panel or enclosure. Maximum power dissipation is 12 W at rated load, which should be factored into enclosure thermal calculations to avoid exceeding the 70 °C maximum operating ambient. The TM210 release designates a fixed thermal-magnetic trip unit with an adjustable long-time pickup (Ir) up to 320 A maximum — though the breaker frame is rated 20 A continuous, the release element itself can be set lower for downstream coordination. No ground-fault monitoring, no neutral protection, and no communication function are built in — this is a straightforward line-protection MCCB for basic overcurrent and short-circuit duty, not a smart breaker with metering or remote trip.","metaTitle":"Siemens 3VM1020-4ED42-0AA0 SENTRON MCCB, 4-Pole, 20A, 121kA","metaDescription":"Siemens SENTRON 3VM1020-4ED42-0AA0 molded case circuit breaker, 4-pole, 20A rated, TM210 release. Breaking capacity 121kA at 240V AC. Current production. Sourced to order against R","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"101.6 mm","title":"3VM1020-4ED42-0AA0","Height":"130 mm","at 240 V":"121 kA","at 415 V":"76 kA","at 440 V":"40 kA","at 500 V":"12 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":"18 A","Depth [In]":"2.8 in","Width [In]":"4 in","Height [In]":"5.1 in","description":"circuit breaker 3VM1 IEC frame 100 breaking capacity class S Icu=36kA @ 415V 4-pole, line protection TM210, FTFM, In=20A overload protection Ir=20A, not adjustable short-circuit protection Ii=16 x In N conductor unprotected nut keeper kit","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 insulation voltage Ui":"690 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","design of the N-conductor protection":"Without","reference code / acc. to IEC 81346-2":"Q","Max. rated operational voltage Ue with DC":"500 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":"500 V","Mechanical Service Life (Switching Cycles) / Typical":"12 000","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/a01c343e64219cb56d770b674b9211ef.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=575009&mlfb=3VM1020-4ED42-0AA0"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1020-4ED42-0AA0","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/3VM1020-4ED42-0AA0 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}}