{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-4EF36-0HA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-4EF36-0HA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-4EF36-0HA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4EF36-0HA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-4EF36-0HA0, Molded case circuit breaker, Line protection, 3-pole, 20 A rated, TM240 overcurrent release, breaking capacity 121 kA at 240 V.","salesMarkdown":"## Siemens SENTRON 3VA1120-4EF36-0HA0 — 20 A MCCB with TM240 release The breaking capacity varies with system voltage: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. For a 480 V delta service, the 52.5 kA rating at 440 V is the closest published figure — the actual SCCR at 480 V will be lower, so verify coordination with the upstream device. Thermal derating is minimal up to 50 °C (full 20 A), then drops to 19.2 A at 55 °C, 18.8 A at 60 °C, 18.4 A at 65 °C, and 18 A at 70 °C. No auxiliary contact or communication module is fitted; the auxiliary trip is a shunt trip (STL) with order code 3VA9688-0BL30, which must be ordered separately if remote tripping is required. The '240' designation indicates the magnetic trip threshold is 240 A (12x the 20 A rating), so the breaker will hold through motor inrush up to that level before the magnetic coil pulls in. No undervoltage release, no phase-failure detection, and no ground-fault monitoring are built in. If any of those functions are needed for the application, an external relay or a different 3VA variant with those options must be specified. The shunt trip (STL) is the only auxiliary release fitted — it allows remote tripping by applying a control voltage to the 3VA9688-0BL30 accessory. Latching endurance is 15,000 operations under no-load conditions.","metaTitle":"Siemens 3VA1120-4EF36-0HA0 SENTRON MCCB, 20 A, 3-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1120-4EF36-0HA0 molded case circuit breaker, 20 A rated, 3-pole, breaking capacity 121 kA at 240 V. Active production. Sourced 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":"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":"Yes","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":"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":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL30","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=208312&mlfb=3VA1120-4EF36-0HA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4EF36-0HA0/alternatives.json"},"ai":{"faq":[{"question":"Does 3VA1120-4EF36-0HA0 include a shunt trip or auxiliary contacts?","answer":"It includes a shunt trip (STL) as the auxiliary release, order code 3VA9688-0BL30. No auxiliary contacts, undervoltage release, or communication module are fitted — those must be ordered separately if needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-4EF36-0HA0","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/3VA1120-4EF36-0HA0 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}}