{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-4GF42-0AC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-4GF42-0AC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0AC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0AC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1220-4GF42-0AC0, molded case circuit breaker, 4-pole, 200 A, TM240 thermal-magnetic release, line protection, breaking capacity 121 kA at 240 V.","salesMarkdown":"Breaking capacity is the headline number here: 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. Current rating holds at 200 A up to 50 °C ambient, then derates: 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C. If the panel runs hot, the actual load must stay under the derated curve — the 200 A label is only valid below 50 °C. ## Sizing and integration Footprint: 140 mm wide, 158 mm tall, 70 mm deep. That 70 mm depth means it fits standard 200 mm deep enclosures without crowding the gland plate. Four poles in a single block — no ganging required for three-phase-plus-neutral applications. Insulation voltage rated at 800 V, so it handles 690 V systems with margin. The breaker ships with two auxiliary switches (HQ design) as standard. The supplied basic switch is order code 3VA12204GF420AA0.","metaTitle":"Siemens 3VA1220-4GF42-0AC0 SENTRON MCCB, 200 A, 4-Pole, 121","metaDescription":"Siemens 3VA1220-4GF42-0AC0 SENTRON molded case circuit breaker, 200 A rated, 4-pole, TM240 release, breaking capacity 121 kA at 240 V. Current production. Sourced to order against","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":"200 A","Minimum":"200 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":"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":"3VA12204GF420AA0","Design Of The Auxiliary Switch":"2 auxiliary switches 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":"100%","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":"3VA9988-0AA12","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=568425&mlfb=3VA1220-4GF42-0AC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0AC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1220-4GF42-0AC0 and get a price?","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":"Will 3VA1220-4GF42-0AC0 drop into a panel specified around 3VA1110-5ED36-0AC0?","answer":"No — the 3VA1220-4GF42-0AC0 is a 4-pole breaker with a 140 mm width, while the 3VA1110-5ED36-0AC0 is 3-pole and narrower. The mounting footprint and bus connections differ. Rewiring and possibly a new backplate are required."},{"question":"What compliance documentation does Siemens provide for 3VA1220-4GF42-0AC0?","answer":"Siemens SENTRON 3VA breakers carry UL, CSA, and IEC certifications as standard. RoHS and REACH declarations are available from Siemens documentation portals. Specific certs for this order code should be verified against the nameplate or factory certificate."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0AC0","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/3VA1220-4GF42-0AC0 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}}