{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-4EF42-0AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-4EF42-0AF0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-4EF42-0AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4EF42-0AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1220-4EF42-0AF0, molded case circuit breaker, 4-pole, 200 A rated current, TM240 thermal-magnetic release, breaking capacity 121 kA at 240 VAC, 75.6 kA at 415 VAC.","salesMarkdown":"## SENTRON 3VA1220-4EF42-0AF0 — 200 A MCCB with TM240 Release The Siemens SENTRON 3VA1220-4EF42-0AF0 is a 4-pole molded case circuit breaker (MCCB) rated for 200 A continuous current at 40 °C, carrying the TM240 thermal-magnetic overcurrent release. Breaking capacity is specified across five voltage levels: 121 kA at 240 VAC, 75.6 kA at 415 VAC, 52.5 kA at 440 VAC, 17 kA at 500 VAC, and 11.9 kA at 690 VAC. Above that, derating applies linearly: 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C. The maximum power loss is 42 W at rated load; that figure drives enclosure ventilation sizing, not the breaker's own thermal limit. ## Auxiliary and Alarm Switching The auxiliary switch signals the open/closed state of the main contacts; the trip alarm switch closes only on a fault trip (overcurrent or short-circuit), not on manual opening. For remote status monitoring or PLC-based fault annunciation, these contacts provide the dry-contact feedback without requiring an external shunt trip or undervoltage release — neither is present on this variant. If you need Modbus, PROFIBUS, or ground-fault alarm, this is the wrong variant — look at the 3VA1 with communication module option or the 3VA2 series with electronic release.","metaTitle":"Siemens 3VA1220-4EF42-0AF0 SENTRON MCCB, 200 A, 4-Pole, 121","metaDescription":"Siemens SENTRON 3VA1220-4EF42-0AF0 molded case circuit breaker, 200 A rated, 4-pole, TM240 release. Breaking capacity 121 kA at 240 VAC. Active production. Available 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":"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":"Yes","Number Of Poles":"4","Voltage Trigger":"No","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":"42 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 Switch":"1 auxiliary switch + 1 trip alarm switch HQ","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","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":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","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=568402&mlfb=3VA1220-4EF42-0AF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4EF42-0AF0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1220-4EF42-0AF0 at 415 V?","answer":"75.6 kA at 415 VAC. The full breaking capacity curve is: 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":"Where can I buy 3VA1220-4EF42-0AF0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Does this breaker include an undervoltage release or shunt trip?","answer":"No. This variant has no undervoltage release and no voltage trigger. The only integrated switching elements are one auxiliary switch and one trip alarm switch (HQ type)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-4EF42-0AF0","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/3VA1220-4EF42-0AF0 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}}