{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3EF32-0AG0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3EF32-0AG0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3EF32-0AG0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF32-0AG0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON series, Molded case circuit breaker, 3VA1120-3EF32-0AG0, 3-pole, 20 A rated continuous current, TM240 thermal-magnetic release, 75.6 kA at 240 V.","salesMarkdown":"The TM240 thermal-magnetic release gives a fixed thermal curve with magnetic trip factory-set; no field-adjustable trip unit, so the coordination study is locked at the order code. ## Interrupting capacity — what the voltage-specific kA ratings mean for panel coordination This MCCB delivers 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V. For a 415 V distribution board with a transformer-sized available fault current of 50 kA, this breaker has 2.5 kA of headroom; at 690 V the same breaker only clears 10.5 kA, so verify the utility-side SCCR before committing it to a 690 V line. The front face carries the trip indicator and the toggle handle; ## What it does not include If you need remote trip or ground-fault protection, you step up to a different 3VA variant with those accessories built in or ordered separately. The TM240 release is non-adjustable — the thermal curve and magnetic pickup are fixed at the factory.","metaTitle":"Siemens SENTRON 3VA1120-3EF32-0AG0 MCCB, 20 A, 3-Pole, TM240","metaDescription":"Siemens SENTRON 3VA1120-3EF32-0AG0 molded case circuit breaker, 20 A rated continuous current, 3-pole, TM240 thermal-magnetic release, 75.6 kA at 240 V. Current production. Quoted","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":"Yes","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":"1 auxiliary switch + 1 trip alarm switch 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":"3VA9988-0AB11","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":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"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=374012&mlfb=3VA1120-3EF32-0AG0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF32-0AG0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1120-3EF32-0AG0?","answer":"Submit an RFQ through this listing. Pricing and lead time are confirmed at quote time through independent distribution channels."},{"question":"What is 3VA1120-3EF32-0AG0's listed depth?","answer":"The depth is 70 mm. Overall dimensions are 130 mm high by 76.2 mm wide by 70 mm deep."},{"question":"Will 3VA1120-3EF32-0AG0 drop into a panel specified around 3VA1010-4ED32-0AC0 without rewiring?","answer":"Both are 3-pole SENTRON 3VA frame breakers sharing the same mounting footprint and terminal layout, so the physical swap is straightforward. The difference is the release: the 3VA1120-3EF32-0AG0 carries a TM240 thermal-magnetic release rated 20 A, while the 3VA1010-4ED32-0AC0 uses a different trip unit. Verify the load current and coordination study before swapping — the breaker fits the panel, but the protection settings may not match."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3EF32-0AG0","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/3VA1120-3EF32-0AG0 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}}