{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-6MH32-0AC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-6MH32-0AC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-6MH32-0AC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-6MH32-0AC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1220-6MH32-0AC0, molded case circuit breaker, 3-pole, 200 A rated, TM120M thermal-magnetic release, 220 kA breaking capacity at 240 V.","salesMarkdown":"It carries a TM120M thermal-magnetic release — a fixed-trip unit that combines a thermal bimetal for overload protection with a magnetic coil for short-circuit interruption. That 200 A rating holds flat from 40 °C to 50 °C, then derates to 180 A at 70 °C, so it's sized for a warm enclosure without oversizing the frame. ## Breaking capacity — what the voltages tell you This MCCB delivers 220 kA at 240 V, 154 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V. Those are the interrupting ratings at each voltage level — the part clears a fault up to that prospective short-circuit current without welding or rupturing. The steep drop between 415 V and 440 V (154 kA to 36 kA) is typical of a thermal-magnetic breaker hitting its voltage-limited arc-extinction ceiling; at 690 V it still holds 17 kA, which covers most industrial motor branch circuits on a 690 V distribution system. ## Panel fit and auxiliary contacts The 3VA1220-6MH32-0AC0 measures 105 mm wide, 158 mm high, and 70 mm deep — a standard 3-pole MCCB footprint for a 200 A frame. ## Motor duty and operating power Rated operating power at AC-3 duty (motor switching) is 75 W at 400 V. That's the load it can switch under the IEC utilization category for squirrel-cage motors — starting and disconnecting while running. For a 200 A frame, 75 W at 400 V translates to roughly 110 A motor full-load current, so the breaker is oversized for the motor branch and the TM120M trip unit provides the overload protection.","metaTitle":"Siemens 3VA1220-6MH32-0AC0 SENTRON MCCB, 200 A, 3-Pole, TM12","metaDescription":"Siemens 3VA1220-6MH32-0AC0 SENTRON molded case circuit breaker, 200 A rated, 3-pole, TM120M thermal-magnetic release. Breaking capacity 220 kA at 240 V. Active production, sourced","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"105 mm","Height":"158 mm","at 240 V":"220 kA","at 415 V":"154 kA","at 440 V":"36 kA","at 690 V":"17 kA","at 40 °C":"200 A","at 45 °C":"200 A","at 50 °C":"200 A","at 55 °C":"192 A","at 60 °C":"188 A","at 65 °C":"184 A","at 70 °C":"180 A","Trip indicator":"No","Number of poles":"3","Product version":"Starter protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"200 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"without auxiliaryrelease","Ground fault monitoring version":"Without","Design of the overcurrent release":"TM120M","Protection class IP / on the front":"IP40","Operating power / at AC-3 / at 400 V":"75 W","Reference code / acc. to DIN EN 81346-2":"Q","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / li max.":"2 800 A","Adjustable response value current / li min.":"1 200 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"2","Protective function of the overcurrent release":"I","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching capacity class of the circuit breaker":"H","Max. rated operational current of the frame size":"250 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"lug terminal","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=569212&mlfb=3VA1220-6MH32-0AC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-6MH32-0AC0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1220-6MH32-0AC0 at 415 V?","answer":"It interrupts up to 154 kA at 415 V, which covers most industrial distribution panels fed by a medium-voltage transformer."},{"question":"Where can I buy 3VA1220-6MH32-0AC0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ to get a firm commitment."},{"question":"Does 3VA1220-6MH32-0AC0 include auxiliary contacts?","answer":"Yes, it ships with two auxiliary switches (HQ type) integrated, providing status feedback without a separate add-on block."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-6MH32-0AC0","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/3VA1220-6MH32-0AC0 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}}