{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-6EF32-0JA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-6EF32-0JA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-6EF32-0JA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF32-0JA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-6EF32-0JA0, molded case circuit breaker, 3-pole, 20 A, TM240 thermal-magnetic release, 220 kA at 240 V interrupting rating, line protection version.","salesMarkdown":"The Siemens SENTRON 3VA1120-6EF32-0JA0 is a 3-pole molded case circuit breaker rated for 20 A continuous at 40 °C, with a TM240 thermal-magnetic release — meaning the thermal element handles overload protection and the magnetic element handles short-circuit interruption without electronic adjustment. ## Panel fit and thermal derating Dimensions are 70 mm deep, 76.2 mm wide, 130 mm high — a standard 3-pole MCCB footprint that mounts on DIN rail or panel-mount adapter, leaving room for adjacent breakers in a multi-pole distribution block. Thermal derating is flat at 20 A from 40 °C through 55 °C, then drops to 19 A at 60 °C and 65 °C, and holds at 19 A through 70 °C — minimal derating for a 20 A frame, which simplifies panel sizing in warm enclosures.","metaTitle":"SENTRON 3VA1120-6EF32-0JA0 MCCB, 20 A, 220 kA at 240 V","metaDescription":"SENTRON 3VA1120-6EF32-0JA0 molded case circuit breaker, 20 A rated, TM240 release, 220 kA at 240 V interrupting capacity. Current production. Quoted 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":"220 kA","at 415 V":"154 kA","at 440 V":"121 kA","at 500 V":"17 kA","at 690 V":"17 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","Product version":"Line protection","Voltage Trigger":"Yes","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"12 W","Auxiliary contact version":"Without","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"800 V","Of The Supplied Basic Switch":"3VA11206EF320AA0","Courant permanent assigné Iu":"20 A","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 IEC 81346-2":"Q","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL32","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 / lg min.":"1","Adjustable response value current / li max.":"320 A","Adjustable response value current / li min.":"160 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"H","Max. rated operational current of the frame size":"160 A","Mechanical Service Life (Switching 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","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 1 mm"}},"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=64347&mlfb=3VA1120-6EF32-0JA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF32-0JA0/alternatives.json"},"ai":{"faq":[{"question":"What does the TM240 release designation mean on this MCCB?","answer":"TM240 means a thermal-magnetic release with a 20 A continuous current rating (the '240' indicates the frame/rating code in the SENTRON naming convention) — the thermal element protects against overload, and the magnetic element trips instantaneously on short-circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-6EF32-0JA0","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/3VA1120-6EF32-0JA0 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}}