{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-5EF36-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-5EF36-0AB0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-5EF36-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF36-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-5EF36-0AB0, molded case circuit breaker, 3-pole, 20 A rated continuous current Iu, TM240 thermal-magnetic release, 187 kA interrupting capacity at 240 V.","salesMarkdown":"The interrupting capacity hits 187 kA at 240 V and still holds 121 kA at 415 V, so it's sized for high-fault installations like transformer secondaries or large motor control centers where available fault current is substantial. The front face is rated IP40, which keeps tools and fingers out but isn't sealed against hose-down — this is a dry indoor panel part. The 20 A rating holds flat from 40 °C to 50 °C — no derating needed in a warm enclosure. Above that it drops gradually: 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 your panel ambient runs 55 °C, you're still good for a 19 A continuous load without nuisance tripping. The 800 V rated insulation voltage (Ui) tells you the breaker can be used in 480 V or 600 V systems with comfortable margin. The interrupting curve at 690 V drops to 17 kA, so if you're on a 690 V IT system, verify the available fault current is below that. Dimensions are 70 mm deep by 76.2 mm wide by 130 mm high. The 76.2 mm width is three standard 25.4 mm pole pitches — it will bolt directly onto a DIN rail or panel-mount foot without adapters.","metaTitle":"Siemens 3VA1120-5EF36-0AB0 SENTRON MCCB, 20 A, 3-Pole, 187 k","metaDescription":"Siemens SENTRON 3VA1120-5EF36-0AB0 molded case circuit breaker, 20 A rated, 3-pole, 187 kA at 240 V. Line protection, TM240 release. Current lifecycle stage. Available 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":"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":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches 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":"3VA9988-0AA11","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=163636&mlfb=3VA1120-5EF36-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF36-0AB0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-5EF36-0AB0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."},{"question":"What are the key interrupting ratings for 3VA1120-5EF36-0AB0?","answer":"The interrupting capacity is 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V."},{"question":"What is the depth of 3VA1120-5EF36-0AB0?","answer":"The depth is 70 mm."},{"question":"What is the width of 3VA1120-5EF36-0AB0?","answer":"The width is 76.2 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-5EF36-0AB0","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/3VA1120-5EF36-0AB0 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}}