{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-5EF36-0CA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-5EF36-0CA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-5EF36-0CA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF36-0CA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-5EF36-0CA0, molded case circuit breaker, 3-pole, 20 A rated continuous current, 187 kA breaking capacity at 240 V AC, TM240 thermal-magnetic release, undervoltage release included.","salesMarkdown":"Above 55 °C it steps down linearly to 18 A at 70 °C, which is the operating maximum. The headline number here is the interrupting capacity: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. The undervoltage release (UVR) is integrated, so if control voltage drops, the breaker trips — a standard requirement for safety circuits that need to drop power on loss of pilot voltage. The 3VA1120-5EF36-0CA0 measures 76.2 mm wide, 130 mm high, and 70 mm deep — a 3-pole MCCB footprint that fits standard Siemens SENTRON panelboards and distribution blocks. No communication module, no phase-failure detection — this is a straight line-protection breaker, not a smart device. The TM240 release's thermal curve is fixed. The 15,000-cycle mechanical endurance is adequate for distribution duty.","metaTitle":"3VA1120-5EF36-0CA0 SENTRON MCCB, 20 A, 3-pole, 187 kA at 240","metaDescription":"Siemens SENTRON 3VA1120-5EF36-0CA0 molded case circuit breaker, 20 A rated, 3-pole, 187 kA breaking at 240 V. Active lifecycle, available to order. Request quote.","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":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 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":"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":"Yes","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":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB24","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":"M","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=27203&mlfb=3VA1120-5EF36-0CA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF36-0CA0/alternatives.json"},"ai":{"faq":[{"question":"What is 3VA1120-5EF36-0CA0 used for?","answer":"It is a 3-pole molded case circuit breaker for line protection in distribution panels, rated 20 A continuous with a TM240 thermal-magnetic release and an integrated undervoltage release. The 187 kA interrupting capacity at 240 V makes it suitable for high-fault-current installations."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-5EF36-0CA0","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/3VA1120-5EF36-0CA0 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}}