{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-6EF32-0KC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-6EF32-0KC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-6EF32-0KC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF32-0KC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1 molded case circuit breaker, 3VA1120-6EF32-0KC0, 3-pole, 20 A (40 °C), 220 kA at 240 VAC, line protection, with shunt trip (STL) and 2 HQ auxiliary switches.","salesMarkdown":"## What this MCCB carries on the nameplate The 3VA1120-6EF32-0KC0 is a Siemens SENTRON 3VA1 molded case circuit breaker (MCCB) for line protection, rated 20 A at 40 °C and 3-pole. Its interrupting capacity hits 220 kA at 240 VAC, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 500 V or 690 V — so the 240 V figure is the headline, but the 415 V rating is what matters for most 400 V-class industrial panels. Current rating holds flat at 20 A from 40 °C through 55 °C, then gently steps down to 19 A at 60 °C through 70 °C. That thermal curve means you don't lose headroom in a warm enclosure until you cross 55 °C — common for a panel sitting near a furnace line or in a non-conditioned electrical room. ## Integrated accessories — shunt trip and aux switches The two HQ aux switches provide independent status feedback — one for the open/closed position to the controller, one for the panel HMI or remote SCADA input. Footprint is 76.2 mm wide, 130 mm tall, 70 mm deep — a standard 3-pole MCCB width for DIN-rail or screw-mount panels. The 70 mm depth leaves clearance for rear-connection terminals in a typical 200 mm-deep enclosure.","metaTitle":"Siemens 3VA1120-6EF32-0KC0 SENTRON MCCB, 3P, 20 A, 220 kA at","metaDescription":"Siemens 3VA1120-6EF32-0KC0 SENTRON molded case circuit breaker, 3-pole, 20 A rated at 40 °C, 220 kA breaking capacity at 240 VAC. Active production, sourced to order. Request a quo","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":"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":"3VA11206EF320AA0","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":"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":"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":"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":"nut keeper kit on both ends","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=255931&mlfb=3VA1120-6EF32-0KC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6EF32-0KC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-6EF32-0KC0 and get a price?","answer":"We source this part to order against an RFQ. Submit a request and our desk will confirm availability and current pricing through independent distribution channels."},{"question":"What is the breaking capacity of 3VA1120-6EF32-0KC0 at 415 V?","answer":"At 415 VAC the interrupting rating is 154 kA. At 240 V it reaches 220 kA, at 440 V it is 121 kA, and at 500 V or 690 V it is 17 kA."},{"question":"What accessories come fitted on 3VA1120-6EF32-0KC0?","answer":"This variant includes a shunt trip (STL) release for remote tripping and two HQ auxiliary switches for position feedback. No undervoltage release, no ground-fault monitoring, and no communication module are fitted."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-6EF32-0KC0","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/3VA1120-6EF32-0KC0 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}}