{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-4GF42-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-4GF42-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1220-4GF42-0BA0, molded case circuit breaker, line protection, 4-pole, 200 A rated continuous current, TM240 overcurrent release, interrupting capacity 121 kA at 240 V.","salesMarkdown":"## What this MCCB delivers Its interrupting capacity hits 121 kA at 240 V and 75.6 kA at 415 V — that's the fault-clearing muscle for a main feeder or heavy branch in an industrial panel. ## Ratings that matter for fit The TM240 release means the thermal pickup is fixed at 200 A, with magnetic trip set at 240 A — no interchangeable trip units, so what you see is what protects. The 200 A rating holds flat from 40 °C to 50 °C, then derates to 176 A at 70 °C. Interrupting capacity drops with voltage: 121 kA at 240 V, 75.6 kA at 415 V, 25 kA at 440 V, 11.9 kA at 690 V. For a 400 V line, the 75.6 kA figure is what you compare against your available fault current. The 4-pole construction with 100% N-conductor protection handles three-phase plus neutral without derating the neutral pole. ## Built-in undervoltage release This breaker ships with an integrated undervoltage release (UVR) — part number 3VA9608-0BB11 for the auxiliary trip assembly. That UVR will trip the breaker if supply voltage drops below a threshold, which is standard for motor feeder protection or safety disconnects where you want automatic dropout on undervoltage. ## Panel fit and handling Latching endurance is rated at 15,000 operations, which covers frequent switching in a feeder role.","metaTitle":"Siemens 3VA1220-4GF42-0BA0 SENTRON MCCB, 200 A, 4P, 121 kA","metaDescription":"Siemens SENTRON 3VA1220-4GF42-0BA0 molded case circuit breaker, 200 A rated, 4-pole, 121 kA at 240 V. Line protection with TM240 release. Current production. Quoted 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","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":"No","Number of poles":"4","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"Yes","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"Without","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":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB11","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":"100%","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":"0","Protective function of the overcurrent release":"LI","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=568432&mlfb=3VA1220-4GF42-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0BA0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1220-4GF42-0BA0?","answer":"Submit an RFQ through this listing; we source to order and confirm current pricing and availability at quote time."},{"question":"What is the interrupting capacity at 415 V for this MCCB?","answer":"At 415 V, the interrupting capacity is 75.6 kA."},{"question":"Does 3VA1220-4GF42-0BA0 include an undervoltage release?","answer":"Yes, it ships with an integrated undervoltage release (UVR) as standard."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0BA0","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/3VA1220-4GF42-0BA0 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}}