{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-4FF42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-4FF42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-4FF42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4FF42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1220-4FF42-0AA0, molded case circuit breaker, 200 A continuous, 4-pole, TM240 thermal-magnetic release, line protection design.","salesMarkdown":"## What this 200 A MCCB delivers — and what the ratings actually mean The Siemens 3VA1220-4FF42-0AA0 is a SENTRON molded case circuit breaker rated for 200 A continuous current at 40 °C, with no derating required up to 50 °C — it holds the full 200 A through that range. Above 50 °C the thermal curve steps down: 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C. That means in a warm panel (say 55 °C ambient) you lose 6 A of headroom; plan the load margin accordingly. This is a straightforward line-protection breaker for distribution panels where you don't need adjustable curves or remote signaling. Breaking capacity varies sharply with system voltage: 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. At 415 V — common in European industrial distribution — the 75.6 kA rating covers most transformer-fed fault levels. ## Footprint and panel integration Dimensions are 140 mm wide, 158 mm high, 70 mm deep. The 140 mm width is a 4-pole frame; a 3-pole sibling would be narrower. No undervoltage release or shunt trip is fitted, so if you need remote tripping you'll add an external module or specify a different variant.","metaTitle":"Siemens 3VA1220-4FF42-0AA0 SENTRON MCCB, 200 A, 4-Pole, TM24","metaDescription":"Siemens SENTRON 3VA1220-4FF42-0AA0 molded case circuit breaker, 200 A continuous, 4-pole, TM240 release. Breaking capacity 121 kA at 240 V. Active production, sourced to order. Req","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"140 mm","Height":"158 mm","Maximum":"2 000 A","Minimum":"1 000 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","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"200 A","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":"50%","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","Continuous Current / Rated Value / Maximum":"250 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","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=105098&mlfb=3VA1220-4FF42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4FF42-0AA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-4FF42-0AA0","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/3VA1220-4FF42-0AA0 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}}