{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-6EF36-0AE0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-6EF36-0AE0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-6EF36-0AE0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF36-0AE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-6EF36-0AE0, molded case circuit breaker, 3-pole, 20 A rated current, TM240 overcurrent release, 220 kA breaking capacity at 240 V, line protection design, 4 auxiliary switches HQ.","salesMarkdown":"It is a 3-pole unit rated at 20 A continuous current across the 40 °C to 55 °C ambient range, derating to 19 A at 60–70 °C. ## Breaking capacity — what the voltage-specific ratings mean for your fault level This MCCB carries a 220 kA interrupting rating at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V. The steep drop above 440 V reflects the physics of arc extinction in air — at higher voltages the arc re-strikes more readily, so the breaker can only guarantee interruption at lower fault currents. For a 480 V panel (common in North America) the relevant figure is the 440 V rating of 121 kA, which is conservative for that voltage class. At 690 V the 17 kA rating still covers most industrial motor branch circuits, but verify your available fault current against that ceiling. ## Auxiliary switching and integration The breaker ships with 4 auxiliary switches HQ (high-rupturing-capacity changeover contacts) factory-fitted — no separate ordering or field assembly needed. These report open/closed status and trip indication to a PLC or status lamp. The 3VA1120-6EF36-0AE0 does not include an undervoltage release, shunt trip, or communication module; those are available as add-on accessories if the application requires remote tripping or energy monitoring. ## Physical fit and panel considerations Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a standard 3-pole MCCB footprint that mounts on a DIN rail or panel-mount adapter. Maximum power dissipation is 12 W at rated load, so ventilation in a sealed enclosure should account for that heat.","metaTitle":"Siemens 3VA1120-6EF36-0AE0 SENTRON MCCB, 20 A, 3-Pole, 220 k","metaDescription":"Siemens 3VA1120-6EF36-0AE0 SENTRON molded case circuit breaker, 20 A rated, 3-pole, 220 kA breaking capacity at 240 V. TM240 release, 4 auxiliary switches HQ. Current production. Q","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":"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","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":"3VA11206EF360AA0","Design Of The Auxiliary Switch":"4 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":"4","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"H","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=178692&mlfb=3VA1120-6EF36-0AE0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF36-0AE0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-6EF36-0AE0 and 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 — submit an RFQ for a firm price and lead time."},{"question":"What is the breaking capacity of 3VA1120-6EF36-0AE0 at different voltages?","answer":"220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V. The rating drops significantly above 440 V due to arc extinction physics."},{"question":"What is the rated current and how does it derate with temperature?","answer":"Rated 20 A continuous from 40 °C to 55 °C ambient. Derates to 19 A at 60 °C and 65 °C, and holds 19 A at 70 °C. No derating needed in typical 40 °C panel environments."},{"question":"Does 3VA1120-6EF36-0AE0 include auxiliary contacts?","answer":"Yes, it ships with 4 factory-fitted auxiliary switches HQ (changeover contacts) for status feedback. No separate ordering required."},{"question":"What compliance documentation is available for this MCCB?","answer":"As a Siemens SENTRON product, it carries CE marking for the European market and is designed to IEC 60947-2. UL/CSA listings are typical for the 3VA family but verify the specific certification for your jurisdiction at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-6EF36-0AE0","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/3VA1120-6EF36-0AE0 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}}