{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-5EF36-0DC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-5EF36-0DC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-5EF36-0DC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF36-0DC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-5EF36-0DC0, molded case circuit breaker, 3-pole, 20 A rated, 187 kA interrupting at 240 V, undervoltage release, line protection.","salesMarkdown":"The Siemens SENTRON 3VA1120-5EF36-0DC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 20 A across the 40 °C to 55 °C band and derating to 19 A at 60 °C and above. Its interrupting capacity at 240 V is 187 kA, dropping to 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V — figures that tell you it handles high-fault scenarios on the secondary side of a distribution transformer or in a main feeder position. The 3VA1120-5EF36-0DC0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint that mounts on a DIN rail or bolted directly to a backplate. At 14.5 W maximum power loss, it needs no forced cooling in a ventilated enclosure, but keep the derating curve in mind if the ambient inside the panel pushes past 55 °C. The UVR coil draws its signal from the line side; verify the control voltage matches your system before wiring.","metaTitle":"Siemens 3VA1120-5EF36-0DC0 SENTRON MCCB, 20 A, 187 kA at 240","metaDescription":"Siemens SENTRON 3VA1120-5EF36-0DC0 molded case circuit breaker, 3-pole, 20 A rated, 187 kA interrupting at 240 V. Active production, sourced to order. Request RFQ.","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":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 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":"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":"3VA11205EF360AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","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":"3VA9608-0BB25","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":"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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=264892&mlfb=3VA1120-5EF36-0DC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-5EF36-0DC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-5EF36-0DC0 and how do I 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 the time of quote."},{"question":"What is the interrupting capacity of 3VA1120-5EF36-0DC0 at 240 V?","answer":"187 kA at 240 V, with 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V."},{"question":"What compliance documentation does this brand provide for 3VA1120-5EF36-0DC0?","answer":"As a Siemens SENTRON product, it is manufactured under the usual IEC/UL standards for MCCBs; specific RoHS, REACH, and UL documentation is available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-5EF36-0DC0","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/3VA1120-5EF36-0DC0 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}}