{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-5ED26-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-5ED26-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-5ED26-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5ED26-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-5ED26-0AA0, 2-pole molded case circuit breaker, 20 A rated current, TM210 thermal-magnetic release, 187 kA breaking capacity at 240 V AC, IP40 front protection.","salesMarkdown":"Rated current holds at 20 A from 40 °C through 55 °C, then derates to 19 A at 60 °C through 70 °C — no derating needed in most ventilated enclosures, but worth checking if the breaker sits in a hot compartment near other heat sources. Breaking capacity of 187 kA at 240 V AC covers high-capacity transformer secondaries and large motor control centers; the 121 kA at 415 V AC still handles most 400 V industrial feeds. Insulation voltage rated 500 V, operating voltage up to 415 V AC or 250 V DC. Power loss max 8 W — modest for a 20 A MCCB, helps with enclosure thermal budgeting. Dimensions: 70 mm deep, 50.8 mm wide (2 inches), 130 mm high. The 2-pole width is standard for a 2-pole MCCB — fits a 2-module space in most distribution boards.","metaTitle":"Siemens 3VA1120-5ED26-0AA0 SENTRON MCCB, 2-Pole, 20A, 187kA","metaDescription":"Siemens 3VA1120-5ED26-0AA0 SENTRON molded case circuit breaker, 2-pole, 20A rated, 187kA breaking at 240V AC. TM210 release, IP40 front. Current production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"50.8 mm","Height":"130 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"187 kA","at 415 V":"121 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]":"2 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"2","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":"8 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"500 V","Design Of The Overcurrent Release":"TM210","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":"415 V","operating voltage / at DC / rated value":"250 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"M","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":"https://cdn.aoctrl.com/5df0cc76a6d0b3df8312d2b68de72efd.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=694637&mlfb=3VA1120-5ED26-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5ED26-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-5ED26-0AA0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for current pricing and availability — confirmed at quote time."},{"question":"What is the breaking capacity of 3VA1120-5ED26-0AA0 at 240 V and 415 V?","answer":"187 kA at 240 V AC and 121 kA at 415 V AC — both are the interrupting ratings for this 2-pole MCCB."},{"question":"What is the rated current and does it derate with temperature?","answer":"Rated 20 A continuous from 40 °C to 55 °C, then derates to 19 A from 60 °C to 70 °C. No derating needed in most ventilated panels."},{"question":"Will 3VA1120-5ED26-0AA0 drop into a panel specified around 3VA1110-5ED36-0AA0 without rewiring?","answer":"Both are 2-pole SENTRON 3VA MCCBs with the same physical footprint (70 mm depth, 50.8 mm width, 130 mm height), so mechanical fit is identical. The key difference is the overcurrent release: 3VA1120-5ED26-0AA0 uses a TM210 fixed 20 A release, while the 3VA1110-5ED36-0AA0 uses a different release type. Verify the trip curve and current rating match your circuit before swapping — the wiring terminals are the same, but the protection settings differ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-5ED26-0AA0","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/3VA1120-5ED26-0AA0 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}}