{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3EF36-0AC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3EF36-0AC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3EF36-0AC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF36-0AC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-3EF36-0AC0, 3-pole molded case circuit breaker, 20 A rated at 40 °C, TM240 thermal-magnetic trip, 75.6 kA breaking at 240 V.","salesMarkdown":"It carries a TM240 thermal-magnetic trip unit — the thermal element handles overloads, the magnetic element clears short circuits — and breaks up to 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V. Rated 20 A from 40 °C through 55 °C, then derates to 19 A at 60 °C through 70 °C. That's a shallow derate curve — you lose only 1 A over a 30 °C rise — so in a warm panel next to a drive or transformer the breaker holds its rating. The 12 W maximum power loss matters for panel thermal budgeting if you're stacking several breakers in a closed cabinet. ## What fits and what doesn't Mounts in the standard SENTRON 3VA panel cutout — 76.2 mm wide per pole, 130 mm tall. If your panel was laid out for a 3VA1110 frame, check the depth — this one is 70 mm, which matches the 3VA1110 depth, so it should drop in without rewiring as long as the bus bars and lug kit align.","metaTitle":"Siemens SENTRON 3VA1120-3EF36-0AC0 MCCB, 20 A, 3-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1120-3EF36-0AC0 molded case circuit breaker, 20 A rated, 3-pole, TM240 trip unit. Breaking capacity 75.6 kA at 240 V. 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":"No","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"12 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 Switch":"2 auxiliary switches HQ","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","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":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","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=365956&mlfb=3VA1120-3EF36-0AC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3EF36-0AC0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1120-3EF36-0AC0?","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 — no stock figures or lead-time numbers published here."},{"question":"What is the breaking capacity of 3VA1120-3EF36-0AC0 at different voltages?","answer":"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. That covers most industrial distribution voltages from 208 V through 600 V."},{"question":"Will 3VA1120-3EF36-0AC0 drop into a panel specified around 3VA1110-5EE32-0LC0?","answer":"The 70 mm depth matches the 3VA1110 frame depth, and the 76.2 mm width per pole is the same SENTRON 3VA standard. It should fit the same cutout and bus-bar spacing, but verify the lug kit and terminal arrangement — the 3VA1120 is a higher-frame breaker than the 3VA1110."},{"question":"What compliance documentation does Siemens provide for this MCCB?","answer":"Standard SENTRON 3VA documentation includes RoHS and REACH declarations, IEC 60947-2 test reports, and UL 489 listing for the North American market. Specific certs are issued per manufacturing lot; request the compliance pack with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3EF36-0AC0","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/3VA1120-3EF36-0AC0 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}}