{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-6EF36-0DC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-6EF36-0DC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-6EF36-0DC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF36-0DC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-6EF36-0DC0, 3-pole molded case circuit breaker, 20 A rated current, 220 kA breaking capacity at 240 VAC, line protection design with undervoltage release.","salesMarkdown":"It is a 3-pole unit rated 20 A continuous at 40 °C, with a thermal derating curve that holds 20 A up to 55 °C and drops to 19 A at 60 °C and above — meaning in a warm enclosure you lose 1 A of headroom above 55 °C, a detail that matters for a panel builder sizing the breaker to a continuous load. The headline breaking capacity is 220 kA at 240 VAC, stepping down to 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V. Maximum power loss is 14.5 W per pole — a panel designer working on a multi-breaker lineup should sum these losses when calculating enclosure ventilation. Width is 76.2 mm (3 in), depth 70 mm (2.76 in), height 130 mm (5.12 in). That 76.2 mm width is a standard 3-module MCCB footprint — it occupies three 25.4 mm positions on a DIN rail or panel-mount plate. ## What the auxiliary release and switches add The two HQ auxiliary switches provide status feedback (open/closed) to a PLC or indication lamp. No communication function is built in, so remote monitoring requires an external I/O module reading the aux contacts.","metaTitle":"Siemens 3VA1120-6EF36-0DC0 SENTRON MCCB, 3-Pole, 20 A, 220 k","metaDescription":"Siemens SENTRON 3VA1120-6EF36-0DC0 molded case circuit breaker, 3-pole, 20 A rated, 220 kA breaking capacity at 240 VAC. Active production. Quoted to order.","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":"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":"3VA11206EF360AA0","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":"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=346305&mlfb=3VA1120-6EF36-0DC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF36-0DC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-6EF36-0DC0 and what is the lead time?","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 lead time and price."},{"question":"What is the breaking capacity of 3VA1120-6EF36-0DC0 at different voltages?","answer":"220 kA at 240 VAC, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V. The 220 kA rating at 240 V is the highest figure — suitable for high-fault service entrance applications."},{"question":"What is the rated current and thermal derating for this MCCB?","answer":"Rated 20 A continuous at 40 °C. The breaker holds 20 A up to 55 °C, then derates to 19 A at 60 °C and 65 °C, and stays at 19 A through 70 °C."},{"question":"Does 3VA1120-6EF36-0DC0 include an undervoltage release?","answer":"Yes, it ships with an undervoltage release (UVR) and two auxiliary switches (HQ design) for status feedback."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-6EF36-0DC0","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/3VA1120-6EF36-0DC0 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}}