{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-6EF36-0JH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-6EF36-0JH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-6EF36-0JH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF36-0JH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-6EF36-0JH0, molded case circuit breaker, 3-pole, 20 A rated continuous current, 220 kA breaking capacity at 240 V AC, line protection version with TM240 thermal-magnetic trip unit.","salesMarkdown":"Its 20 A continuous rating and 3-pole construction suit it for feeder or branch-circuit duty in commercial and light industrial switchboards. Breaking capacity reaches 220 kA at 240 V AC, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 690 V — figures that cover most low-voltage fault scenarios without needing a current-limiting upstream device. The thermal-magnetic trip unit (TM240) provides fixed thermal and magnetic protection, no electronic adjustments or communication module. This is a straightforward, non-communicating breaker for hardwired panels where remote monitoring isn't required. Above that the curve steps down: 19.2 A at 55 °C, 18.8 A at 60 °C, 18.4 A at 65 °C, and 18 A at 70 °C. If the panel runs hot — near a transformer or drive bank — size the load to the 70 °C figure, not the nameplate. Footprint is 76.2 mm wide, 130 mm tall, 70 mm deep — a standard 3-pole MCCB envelope that drops into most DIN-rail or panel-mount SENTRON bases without re-drilling. ## Accessory and release options The integrated auxiliary trip is order code 3VA9688-0BL32. A voltage trigger is present, and the trip indicator gives local visual confirmation of a fault event. Phase failure detection and communication functions are absent — this is a pure protection device, not a metering breaker.","metaTitle":"Siemens 3VA1120-6EF36-0JH0 SENTRON MCCB, 20 A, 220 kA at 240","metaDescription":"Siemens SENTRON 3VA1120-6EF36-0JH0 molded case circuit breaker, 20 A rated, 220 kA breaking at 240 V. Active production. Quoted 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":"220 kA","at 415 V":"154 kA","at 440 V":"121 kA","at 690 V":"17 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":"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":"2 auxiliary switches + 1 trip alarm switch HQ","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":"3VA9688-0BL32","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":"3","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching capacity class of the circuit breaker":"H","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=128722&mlfb=3VA1120-6EF36-0JH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF36-0JH0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA1120-6EF36-0JH0 drop into a panel specified around 3VA1110-5EE32-0JA0 without rewiring?","answer":"Both are 3-pole SENTRON MCCBs with the same 76.2 mm width and 130 mm height, so the physical envelope is identical. The 3VA1120-6EF36-0JH0 carries a 20 A rating and a TM240 trip unit versus the peer's different rating and trip curve — verify the load current and protection coordination before swapping, but the mounting footprint is compatible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-6EF36-0JH0","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/3VA1120-6EF36-0JH0 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}}