{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1020-4ED36-0KC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1020-4ED36-0KC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1020-4ED36-0KC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED36-0KC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1020-4ED36-0KC0, 3-pole molded case circuit breaker, 20 A rated at 40 °C, interrupting capacity 121 kA at 240 V AC, line protection design with shunt trip and auxiliary switches.","salesMarkdown":"Rated 20 A continuously at 40 °C (derates to 19 A at 60 °C and above), it carries a rated insulation voltage of 800 V and can interrupt up to 121 kA at 240 V AC, stepping down to 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 500 V or 690 V. If your panel runs hotter, the derating curve is explicit: 19 A from 60 °C to 70 °C. That matters when you're coordinating with upstream protection or sizing for a known load. The 3-pole configuration and line-protection design mean it trips on phase faults and overloads but has no built-in ground-fault monitoring. ## Panel integration and accessories The auxiliary switches provide status feedback (open/closed) to a PLC or indicator lamp. Dimensions are 76.2 mm wide, 130 mm high, 70 mm deep — a standard SENTRON 3VA footprint that fits existing panel cutouts and busbar systems for the series. No communication function on this variant; it's a standalone thermal-magnetic breaker, not a communicable power-management unit.","metaTitle":"Siemens SENTRON 3VA1020-4ED36-0KC0 MCCB, 20A, 121kA at 240V","metaDescription":"Siemens SENTRON 3VA1020-4ED36-0KC0 molded case circuit breaker, 3-pole, 20A rated at 40°C, interrupting capacity 121kA at 240V AC. Active production. Quoted on request.","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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 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":"Yes","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":"3VA10204ED360AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","Design Of The Auxiliary Release":"shunt trip (STL)","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 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","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL33","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":"No","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":"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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=158247&mlfb=3VA1020-4ED36-0KC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1020-4ED36-0KC0/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 3VA1020-4ED36-0KC0?","answer":"Pricing and current availability are confirmed at quote time against an RFQ through independent industrial-automation distribution. Submit a request for quote (RFQ) with your quantity and delivery timeline."},{"question":"Will 3VA1020-4ED36-0KC0 drop into a panel designed for 5SQ2370-2YA05?","answer":"No — the 3VA1020-4ED36-0KC0 is a current-generation SENTRON MCCB with a different mounting footprint and busbar interface than the older 5SQ series. Verify cutout dimensions and busbar spacing before substitution."},{"question":"What are the key dimensions of this MCCB?","answer":"Width 76.2 mm, height 130 mm, depth 70 mm. These are standard for the SENTRON 3VA platform and fit existing panel cutouts for the series."},{"question":"What compliance documentation does this breaker carry?","answer":"As a Siemens SENTRON product, it carries UL, CSA, and IEC certifications standard for the series. Specific RoHS and REACH declarations are available from Siemens documentation for the 3VA family upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1020-4ED36-0KC0","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/3VA1020-4ED36-0KC0 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}}