{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-4EF42-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-4EF42-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-4EF42-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4EF42-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1220-4EF42-0BA0, molded case circuit breaker, 4-pole, TM240 release, 200 A at 40 °C, 121 kA at 240 V, undervoltage release.","salesMarkdown":"## Integrator's spec recap Rated 200 A continuously at 40 °C ambient, it holds that rating flat through 50 °C, then derates to 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C — useful when the breaker sits in a crowded enclosure with elevated internal temperatures. The interrupting ratings are 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, 17 kA at 500 V, and 11.9 kA at 690 V, giving ample SCCR headroom for most industrial service-entrance and feeder applications. An undervoltage release (UVR) is built in, so the breaker trips on loss of control voltage — a common requirement for safety disconnects on machine tools and conveyors. Dimensions are 158 mm high, 140 mm wide, and 70 mm deep — a standard footprint for a 4-pole SENTRON 3VA frame. The breaker mounts via screw-clamp terminals and occupies a cutout sized for the 3VA family; verify the existing panel's bus-bar spacing and phase-to-phase clearance before committing the BOM. Maximum power loss is 44.5 W, which should be factored into the enclosure's thermal budget if the panel is sealed or tightly packed. The 121 kA interrupting capacity at 240 V and 75.6 kA at 415 V mean this breaker can be used as a main or feeder device ahead of lower-rated branch breakers, provided the let-through energy is within the downstream device's withstand ratings. No communication function or ground-fault monitoring is included on this variant — it is a pure line-protection device with undervoltage release only.","metaTitle":"Siemens 3VA1220-4EF42-0BA0 SENTRON MCCB, 200 A, 4-Pole, 121","metaDescription":"Siemens SENTRON 3VA1220-4EF42-0BA0 molded case circuit breaker, 200 A at 40 °C, 4-pole, 121 kA at 240 V. Current lifecycle. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"140 mm","Height":"158 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":"17 kA","at 690 V":"11.9 kA","at 40 °C":"200 A","at 45 °C":"200 A","at 50 °C":"200 A","at 55 °C":"194 A","at 60 °C":"188 A","at 65 °C":"182 A","at 70 °C":"176 A","Depth [In]":"2.76 in","Width [In]":"5.51 in","Height [In]":"6.22 in","Trip Indicator":"No","Number Of Poles":"4","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":"44.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA12204EF420AA0","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","design of the N-conductor protection":"without","Of The Integrated Auxiliary Trip Unit":"3VA9608-0BB11","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"600 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":"0","Switching Capacity Class Of The Circuit Breaker":"S","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=568406&mlfb=3VA1220-4EF42-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4EF42-0BA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key interrupting ratings for 3VA1220-4EF42-0BA0?","answer":"The breaker is rated 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, 17 kA at 500 V, and 11.9 kA at 690 V."},{"question":"What is the continuous current rating at elevated ambient temperatures?","answer":"It carries 200 A continuously from 40 °C through 50 °C, then derates to 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C."},{"question":"What are the physical dimensions of this MCCB?","answer":"Height is 158 mm, width is 140 mm, and depth is 70 mm."},{"question":"Where can I buy 3VA1220-4EF42-0BA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-4EF42-0BA0","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/3VA1220-4EF42-0BA0 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}}