{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-4EF36-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-4EF36-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-4EF36-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4EF36-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-4EF36-0DA0, molded case circuit breaker, 3-pole, 20 A, TM240 overcurrent release, 121 kA at 240 V, 75.6 kA at 415 V, IP40 front.","salesMarkdown":"Its TM240 thermal-magnetic release gives it a fixed thermal pickup at 20 A continuous current, with magnetic trip set at 240 A (10x In). That thermal rating holds flat at 20 A from 40 °C up to 50 °C, then derates to 18 A at 70 °C — so in a warm enclosure you lose about 10% of headroom, which matters when sizing for a fully loaded cabinet. Breaking capacity is the headline here: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. That 75.6 kA at 415 V puts it comfortably above typical 50 kA or 65 kA SCCR requirements for most industrial panel feeds — you get selectivity headroom without stepping up to a larger frame. The 3VA1120-4EF36-0DA0 measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a standard 3-pole MCCB footprint that drops into a SENTRON panelboard or a separate enclosure without re-drilling the mounting plate. The undervoltage release (UVR) is built in (design code 3VA9608-0BB25), which means the breaker trips if control voltage drops — common for emergency-stop chains or power-loss protection on motor feeds. No auxiliary contacts or ground-fault module are included; those would need the separate accessory slot.","metaTitle":"Siemens 3VA1120-4EF36-0DA0 SENTRON MCCB, 20 A, 3-Pole, TM240","metaDescription":"Siemens SENTRON 3VA1120-4EF36-0DA0 molded case circuit breaker, 20 A rated continuous current, 3-pole, TM240 release, 121 kA at 240 V. Current lifecycle. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 690 V":"11.9 kA","at 40 °C":"20 A","at 45 °C":"20 A","at 50 °C":"20 A","at 55 °C":"19.2 A","at 60 °C":"18.8 A","at 65 °C":"18.4 A","at 70 °C":"18 A","Trip indicator":"No","Number of poles":"3","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"Yes","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"Without","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"20 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB25","Design of the overcurrent release":"TM240","Design of short-circuit protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","Protection class IP / on the front":"IP40","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"20 A","Adjustable response value current / li max.":"320 A","Adjustable response value current / li min.":"160 A","Adjustable response value current / lr min.":"14 A","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":"S","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"box terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (1.5 - 70 mm²)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=251004&mlfb=3VA1120-4EF36-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4EF36-0DA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1120-4EF36-0DA0 at 415 V?","answer":"75.6 kA at 415 V, which is the most common industrial distribution voltage for this class of MCCB."},{"question":"Where can I buy 3VA1120-4EF36-0DA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What does the TM240 release mean on this MCCB?","answer":"TM240 means a thermal-magnetic release with a fixed thermal rating of 20 A continuous and a magnetic trip threshold of 240 A (10x In), suitable for protecting cable runs and busbars against overloads and short circuits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-4EF36-0DA0","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/3VA1120-4EF36-0DA0 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}}