{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3EF36-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3EF36-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3EF36-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF36-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-3EF36-0BA0, molded case circuit breaker, 3-pole, 20 A rated at 40 °C, TM240 thermal-magnetic release, 75.6 kA breaking capacity at 240 VAC, with undervoltage release.","salesMarkdown":"The 3VA1120-3EF36-0BA0: The interrupting rating varies with system voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. The 11.9 kA rating at 690 V still covers most industrial 690 VAC systems. ## Thermal-magnetic curve and continuous current The TM240 release provides a fixed thermal trip for overloads and a magnetic instantaneous trip for short circuits. Continuous current holds at 20 A from 40 °C through 55 °C, then derates to 19 A at 60 °C and 65 °C, and 19 A at 70 °C. The 76.2 mm width (3 inches) is the standard 3-pole MCCB footprint for this SENTRON frame size — it occupies three 25.4 mm module positions on a DIN rail or panel-mount base.","metaTitle":"Siemens 3VA1120-3EF36-0BA0 SENTRON MCCB, 20 A, 3-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1120-3EF36-0BA0 molded case circuit breaker, 20 A rated, 3-pole, 75.6 kA breaking capacity at 240 VAC. Active production, sourced to order. RFQ for volume pricin","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":"3VA11203EF360AA0","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":"3VA9608-0BB11","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":"box terminal on both sides","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=104826&mlfb=3VA1120-3EF36-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF36-0BA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this MCCB at 240 V?","answer":"The interrupting rating is 75.6 kA at 240 VAC, which is the highest rating across its voltage range. At 415 V it is 52.5 kA, at 440 V it is 32 kA, and at 500 V and 690 V it is 11.9 kA."},{"question":"What are the physical dimensions of 3VA1120-3EF36-0BA0?","answer":"Depth is 70 mm, width is 76.2 mm (3 inches, fitting three 25.4 mm module positions), and height is 130 mm."},{"question":"Where can I buy 3VA1120-3EF36-0BA0 and how is it quoted?","answer":"This part is sourced to order through independent distribution channels. Submit an RFQ for current availability and volume pricing — stock and lead time are confirmed at quote time."},{"question":"Does this breaker include an undervoltage release?","answer":"Yes, the design of the auxiliary release is an undervoltage release (UVR). The basic switch variant is 3VA11203EF360AA0."},{"question":"What compliance documentation is available for this Siemens MCCB?","answer":"The SENTRON 3VA series typically carries UL, CSA, and IEC certifications. Specific RoHS and REACH declarations are available from Siemens upon request. The insulation voltage is rated 800 V, and the product is designed for line protection per IEC 60947-2."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3EF36-0BA0","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/3VA1120-3EF36-0BA0 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}}