{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-6MH32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-6MH32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-6MH32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6MH32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-6MH32-0AA0, molded case circuit breaker, 3-pole, 20 A, 220 kA at 240 V, starter protection design.","salesMarkdown":"Its TM120M thermal-magnetic overcurrent release provides inverse-time overload protection plus instantaneous short-circuit trip, sized for a 20 A continuous load at 40 °C through 55 °C; at 60 °C it derates to 19 A, holding to 19 A through 70 °C. The headline breaking capacity is 220 kA at 240 VAC, dropping to 154 kA at 415 VAC, 121 kA at 440 VAC, and 7.5 kA at both 500 VAC and 690 VAC — so at higher line voltages the interrupting capability falls sharply, and the 7.5 kA figure at 500/690 V is the one that governs coordination in a 480/600 V panel. ## Where it is used and how it mounts This MCCB is intended for panel or enclosure mounting in motor control centers, starter assemblies, and industrial control panels where the breaker protects a motor starter branch. It occupies a 76.2 mm wide by 130 mm tall by 70 mm deep footprint (3 in × 5.12 in × 2.76 in). The design is for fixed mounting — not a plug-in base — so panel cutouts and bus connections must be planned for this specific frame size.","metaTitle":"Siemens 3VA1120-6MH32-0AA0 SENTRON MCCB, 20 A, 220 kA at 240","metaDescription":"Siemens SENTRON 3VA1120-6MH32-0AA0 molded case circuit breaker, 3-pole, 20 A rated, 220 kA breaking capacity at 240 VAC. Starter protection design with TM120M release. Sourced to o","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","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":"7.5 kA","at 690 V":"7.5 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":"No","Design Of The Product":"Starter 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","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM120M","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":"690 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"I","number of CO contacts / for auxiliary contacts":"0","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=628673&mlfb=3VA1120-6MH32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-6MH32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1120-6MH32-0AA0 at 240 V?","answer":"220 kA at 240 VAC. At 415 VAC it is 154 kA, at 440 VAC it is 121 kA, and at 500 VAC and 690 VAC it is 7.5 kA."},{"question":"What is the rated current of 3VA1120-6MH32-0AA0 at 40 °C?","answer":"20 A at 40 °C through 55 °C, derating to 19 A at 60 °C through 70 °C."},{"question":"Where can I buy 3VA1120-6MH32-0AA0 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock figures or lead-time numbers are published here."},{"question":"What is the overcurrent release type on this MCCB?","answer":"TM120M — a thermal-magnetic release providing inverse-time overload and instantaneous short-circuit protection, tuned for starter protection duty."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-6MH32-0AA0","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/3VA1120-6MH32-0AA0 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}}