{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-4GF42-0AH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-4GF42-0AH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0AH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0AH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1220-4GF42-0AH0, molded case circuit breaker, 4-pole, rated 200 A at 40 °C, TM240 thermal-magnetic trip, breaking capacity 121 kA at 240 V, 75.6 kA at 415 V.","salesMarkdown":"The thermal element handles overloads (slow, heat-based), and the magnetic element catches short circuits fast. That 200 A holds all the way to 50 °C; at 55 °C it's 194 A, at 60 °C it's 188 A, at 65 °C it's 182 A, and at 70 °C it's 176 A — so if your panel runs hot, you're still covered for a solid 176 A without derating the breaker. Breaking capacity is where this breaker earns its keep. It's rated 121 kA at 240 V, 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V. That saves a wiring pass vs. adding them later. The N-conductor protection is 100% rated, meaning the neutral pole is fully rated for the same current as the phases. That's standard for 4-pole line protection. For a panel originally built around the 3VA1010-2ED32-0JA0 (a smaller-frame 100 A MCCB), this 3VA1220-4GF42-0AH0 will not drop in without rewiring — different frame size, different mounting hole pattern, and the bus connections scale up. The closest functional sibling in the same frame is the 3VA1010-2ED32-0JA0, but that's a 100 A unit; this one is 200 A. If you need the same 200 A rating in a smaller footprint, there's no direct swap — the 3VA12 frame is what carries 200 A.","metaTitle":"Siemens 3VA1220-4GF42-0AH0 SENTRON MCCB, 200 A, 4-Pole, 121","metaDescription":"Siemens SENTRON 3VA1220-4GF42-0AH0 molded case circuit breaker, 200 A rated, 4-pole, line protection with TM240 trip. Breaking capacity 121 kA at 240 V. Current production, availab","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":"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 + 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":"without auxiliaryrelease","Ground fault monitoring version":"Without","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":"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=568430&mlfb=3VA1220-4GF42-0AH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0AH0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1220-4GF42-0AH0 at different voltages?","answer":"121 kA at 240 V, 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V. The rated insulation voltage is 800 V."},{"question":"Where can I buy 3VA1220-4GF42-0AH0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What auxiliary contacts come with this breaker?","answer":"It ships with 2 auxiliary switches and 1 trip alarm switch (HQ configuration) factory-installed, so you get position feedback and a separate fault alarm contact."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0AH0","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/3VA1220-4GF42-0AH0 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}}