{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-4ED26-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-4ED26-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-4ED26-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4ED26-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-4ED26-0AA0, 2-pole molded case circuit breaker, 20 A rated current at 40 °C, 121 kA breaking capacity at 240 V AC, TM210 thermal-magnetic release, line protection design.","salesMarkdown":"Rated current holds at 20 A across the 40 °C to 55 °C band, then derates to 19 A at 60 °C through 70 °C — useful to know if the breaker sits near other heat sources in a crowded enclosure. Breaking capacity is 121 kA at 240 V AC and 75.6 kA at 415 V AC — that's high-interrupt capability for a 2-pole frame, sized for industrial service-entrance or sub-distribution where fault currents are substantial. The insulation voltage is rated 500 V, and operating voltage goes to 415 V AC or 250 V DC. Front IP40 protection means it's splash-resistant from the front face but not sealed for washdown; mount it inside a panel, not exposed to hose spray. Dimensions are 70 mm deep, 50.8 mm wide, 130 mm tall — the 50.8 mm width is a standard 2-inch footprint that matches most 2-pole MCCB mounting bases. No undervoltage release or shunt trip on this variant, and no communication module; it's a straight thermal-magnetic breaker with no auxiliary signaling.","metaTitle":"Siemens 3VA1120-4ED26-0AA0 SENTRON MCCB, 2-Pole, 20A, 121kA","metaDescription":"Siemens 3VA1120-4ED26-0AA0 SENTRON molded case circuit breaker, 2-pole, 20A rated at 40°C, 121 kA breaking at 240 V AC, TM210 release. Active production. Sourced 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":"121 kA","at 415 V":"75.6 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":"S","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/f24e93ca0cd6b2c058dac8b7ee5e06c8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=86548&mlfb=3VA1120-4ED26-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4ED26-0AA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-4ED26-0AA0","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/3VA1120-4ED26-0AA0 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}}