{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-5ED12-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-5ED12-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-5ED12-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5ED12-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-5ED12-0AA0, 1-pole molded case circuit breaker, 20 A rated continuous current, 121 kA at 240 V, line protection, TM210 release.","salesMarkdown":"## Spec recap and fit Its interrupting capacity hits 121 kA at 240 V AC and 9 kA at 415 V AC — the 240 V figure covers most North American panelboard fault duties, while the 415 V rating confirms it for 400 V-class European distribution. The 25.4 mm width (1 in) and 70 mm depth (2.8 in) mean it snaps onto a standard DIN rail with one module of space — no special adapter needed. The 130 mm height (5.1 in) fits within typical enclosure clearances for a single-pole breaker. Rated insulation voltage Ui is 500 V, maximum DC operational voltage is 250 V. Short-circuit pickup (Ii) is fixed at 320 A. ## Thermal derating and enclosure Maximum power loss is 4 W at rated current, so internal heating from the breaker itself is negligible. Front IP40 protection means the breaker face is splash-proof against tools and dust ingress, but the enclosure must still provide overall IP rating for the panel.","metaTitle":"Siemens 3VA1120-5ED12-0AA0 SENTRON MCCB, 1-pole 20A, 240V 12","metaDescription":"Siemens 3VA1120-5ED12-0AA0 SENTRON molded case circuit breaker, 1-pole, 20 A rated, 121 kA at 240 V. Active production. Quoted to order. Request RFQ for pricing and availability.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"25.4 mm","Height":"130 mm","at 240 V":"121 kA","at 415 V":"9 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]":"1 in","Height [in]":"5.1 in","Number of poles":"1","Product version":"Line protection","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"20 000","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"4 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"20 A","Rated insulation voltage Ui":"500 V","Ground fault monitoring version":"Without","Design of the overcurrent release":"TM210","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","Max. rated operational voltage Ue with DC":"250 V","Product extension / optional / motor drive":"No","Adjustable response value current / Ir max.":"20 A","Adjustable response value current / li max.":"320 A","Adjustable response value current / li min.":"320 A","Adjustable response value current / lr min.":"20 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":"M","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"415 V","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=694634&mlfb=3VA1120-5ED12-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5ED12-0AA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-5ED12-0AA0","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/3VA1120-5ED12-0AA0 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}}