{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-4EF42-0KH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-4EF42-0KH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-4EF42-0KH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4EF42-0KH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1220-4EF42-0KH0, molded case circuit breaker, 4-pole, 200 A rated continuous current Iu, line protection version, TM240 overcurrent release, 121 kA breaking capacity at 240 V.","salesMarkdown":"The TM240 thermal-magnetic release provides fixed overload pickup and magnetic trip coordination — no electronic adjustment, so it's a straight swap-in for legacy panel designs that don't need communication or ground-fault monitoring. This MCCB delivers 121 kA at 240 V AC, 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V. For a 415 V distribution board fed by a transformer of 2 MVA or larger, 75.6 kA gives headroom for full selectivity with downstream 25 kA or 36 kA rated breakers, provided the upstream device's let-through energy is coordinated. ## Thermal derating — how ambient temperature affects the 200 A rating Above that, derate linearly: 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C. If this breaker lands in a non-ventilated enclosure near transformers or busway, expect to downsize the cable or upsize the breaker frame — a 200 A feeder in a 60 °C panel effectively becomes an 188 A circuit. ## Auxiliary contacts and shunt trip — what's on board For a simple feeder breaker with remote trip capability, this is the right configuration; if you need undervoltage protection or ground-fault sensing, order a different variant. Dimensions: 140 mm wide, 158 mm high, 70 mm deep. The 4-pole design includes a switched neutral (no N-conductor protection — the neutral pole is switched but not monitored).","metaTitle":"Siemens 3VA1220-4EF42-0KH0 MCCB, 200 A, 4-Pole, 121 kA at 24","metaDescription":"Siemens SENTRON 3VA1220-4EF42-0KH0 molded case circuit breaker, 200 A rated, 4-pole, line protection. Breaking capacity 121 kA at 240 V, 75.6 kA at 415 V. Active production, source","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","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"25 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","Trip indicator":"Yes","Number of poles":"4","Product version":"Line protection","Voltage trigger":"Yes","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 + 1 trip alarm switch 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":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL33","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","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"600 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"200 A","Adjustable response value current / li max.":"2 000 A","Adjustable response value current / li min.":"1 000 A","Adjustable response value current / lr min.":"140 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"3","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching capacity class of the circuit breaker":"S","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","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"25 x 8","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"13 x 1"}},"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=568423&mlfb=3VA1220-4EF42-0KH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4EF42-0KH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1220-4EF42-0KH0 and what is the lead time?","answer":"This part is sourced and quoted to order through independent distribution. Availability and current pricing are confirmed at quote time against an RFQ; no stock count or lead-time number is published here."},{"question":"What are the key ratings of 3VA1220-4EF42-0KH0?","answer":"Rated continuous current Iu is 200 A, number of poles is 4, breaking capacity reaches 121 kA at 240 V and 75.6 kA at 415 V. The overcurrent release is a thermal-magnetic TM240, and the rated insulation voltage is 800 V."},{"question":"Will 3VA1220-4EF42-0KH0 drop into a panel specified for 3VA1010-2ED32-0JA0 without rewiring?","answer":"No — the 3VA1220-4EF42-0KH0 is a 200 A, 4-pole frame, while the 3VA1010-2ED32-0JA0 is a different rating and pole count. Panel fit depends on physical dimensions and busbar layout; the 140 mm width and 158 mm height of this part may not match the smaller frame. Wiring changes are likely."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-4EF42-0KH0","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/3VA1220-4EF42-0KH0 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}}