{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3EF36-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3EF36-0AB0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3EF36-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF36-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-3EF36-0AB0, molded case circuit breaker, 3-pole, 20 A rated continuous current Iu, TM240 thermal-magnetic release, interrupting ratings 75.6 kA at 240 V / 52.5 kA at 415 V / 32 kA at 440 V / 10.5 kA at 690 V.","salesMarkdown":"## Line protection MCCB, 20 A frame The Siemens SENTRON 3VA1120-3EF36-0AB0 is a 3-pole molded case circuit breaker rated for line protection, carrying a continuous current Iu of 20 A at 40 °C and holding that rating through 50 °C before it begins to derate — 19.2 A at 55 °C, 18.8 A at 60 °C, 18.4 A at 65 °C, and 18 A at 70 °C. The TM240 thermal-magnetic release handles the overcurrent trip curve, with a maximum adjustable time delay tr of 1 s. Interrupting capacity runs 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V — numbers that govern the available fault current the breaker can safely clear without upstream coordination issues. Width is 76.2 mm, depth 70 mm, height 130 mm. The interrupting ratings at different voltages tell you the maximum fault current the breaker can interrupt at that system voltage — 75.6 kA at 240 V covers high-fault panels near large transformers; the 10.5 kA at 690 V still handles most industrial 690 V distribution. The TM240 release is thermal-magnetic, so it provides inverse-time overload protection (thermal element) plus instantaneous short-circuit trip (magnetic element).","metaTitle":"Siemens 3VA1120-3EF36-0AB0 SENTRON MCCB, 20 A, 3-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1120-3EF36-0AB0 molded case circuit breaker, 20 A rated continuous current, 3-pole, 75.6 kA interrupting at 240 V. Current lifecycle. Quoted to order against RFQ","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":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 690 V":"10.5 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":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches HP","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":"without auxiliaryrelease","Ground fault monitoring version":"Without","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":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA11","Switching capacity class of the circuit breaker":"N","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=475499&mlfb=3VA1120-3EF36-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF36-0AB0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-3EF36-0AB0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — no stock figures or lead-time numbers are published here."},{"question":"What is the interrupting rating of 3VA1120-3EF36-0AB0 at 415 V?","answer":"52.5 kA at 415 V, which covers most European 400 V industrial distribution panels with high fault current."},{"question":"Does 3VA1120-3EF36-0AB0 include auxiliary contacts?","answer":"Yes, it comes with 2 auxiliary switches (HP type) built in, so no separate aux block is needed for status feedback."},{"question":"What compliance documentation is available for 3VA1120-3EF36-0AB0?","answer":"As a Siemens SENTRON product, it carries the usual CE marking for the European market and is designed to IEC/EN 60947-2. RoHS and REACH declarations are standard from the manufacturer; specific UL/CSA listings should be verified against the nameplate marking for the target jurisdiction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3EF36-0AB0","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/3VA1120-3EF36-0AB0 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}}