{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3EF32-0CA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3EF32-0CA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3EF32-0CA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF32-0CA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-3EF32-0CA0, molded case circuit breaker, 3-pole, 20 A at 40 °C, 75.6 kA breaking capacity at 240 VAC, with undervoltage release, TM240 overcurrent release.","salesMarkdown":"The Siemens SENTRON 3VA1120-3EF32-0CA0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a 20 A continuous current at 40 °C and a 75.6 kA interrupting capacity at 240 VAC. The interrupting curve drops from 75.6 kA at 240 V to 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at 500 V and 690 V. That 11.9 kA floor at 690 V is the figure to check for 480/600 V class panels — it confirms the breaker can clear a bolted fault on a 600 V motor branch without upstream coordination failure, provided the available fault current stays under that threshold. Rated current holds at 20 A from 40 °C through 55 °C, then derates to 19 A at 60 °C and 19 A at 70 °C. In a sealed enclosure without forced cooling, that 1 A drop at 60 °C is the practical limit — the breaker won't nuisance-trip on a 19 A load in a hot panel.","metaTitle":"Siemens 3VA1120-3EF32-0CA0 SENTRON MCCB, 20 A, 3-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1120-3EF32-0CA0 molded case circuit breaker, 20 A rated, 3-pole, 75.6 kA breaking capacity at 240 VAC. 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","Maximum":"0 A","Minimum":"0 A","at 240 V":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 500 V":"11.9 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":"20 A","at 60 °C":"19 A","at 65 °C":"19 A","at 70 °C":"19 A","Depth [In]":"2.76 in","Width [In]":"3 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"Yes","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"14.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11203EF320AA0","Design Of The Auxiliary Release":"undervoltage release (UVR)","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","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","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB24","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"N","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"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=59373&mlfb=3VA1120-3EF32-0CA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF32-0CA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1120-3EF32-0CA0 at 240 V?","answer":"The interrupting rating is 75.6 kA at 240 VAC, which covers high-fault-capacity service-entrance and distribution panels where available fault current exceeds standard 10 kA or 25 kA MCCB ratings."},{"question":"Does 3VA1120-3EF32-0CA0 include an undervoltage release?","answer":"Yes, it is fitted with an undervoltage release (UVR) as standard — the breaker opens when control voltage drops below the dropout threshold, which is typical for safety circuits and emergency-stop disconnects."},{"question":"How do I get current pricing and availability for 3VA1120-3EF32-0CA0?","answer":"Submit an RFQ through this listing. The part is sourced to order through independent distribution; availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3EF32-0CA0","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/3VA1120-3EF32-0CA0 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}}