{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-4GF42-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-4GF42-0AB0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1220-4GF42-0AB0, molded case circuit breaker, 4-pole, 200 A, TM240 overcurrent release, 121 kA at 240 V, 75.6 kA at 415 V.","salesMarkdown":"## MCCB for line protection — 200 A, 4-pole, TM240 release Breaking capacity reaches 121 kA at 240 V and 75.6 kA at 415 V, so it handles high-fault-current scenarios common in industrial mains or sub-distribution boards without cascading upstream. ## Breaking capacity across voltages — selectivity planning The interrupting ratings step down predictably with 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. For a 415 V system — common in European industrial panels — the 75.6 kA SCCR gives substantial headroom above typical 25–50 kA fault levels, simplifying coordination with downstream breakers. ## Thermal derating — continuous current vs. ambient temperature 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. Factor this into the load calculation; the TM240 release does not compensate for ambient drift. ## Physical fit and auxiliary switching Dimensions are 140 mm wide, 158 mm high, 70 mm deep — a 4-pole MCCB that fits standard Siemens SENTRON mounting patterns. Insulation voltage rated at 800 V, operating temperature range -25 °C to 70 °C, storage from -40 °C to 80 °C. Maximum power loss is 42 W at rated current — account for this in enclosure thermal calculations.","metaTitle":"Siemens 3VA1220-4GF42-0AB0 MCCB, 200 A, 4-Pole, 121 kA at 24","metaDescription":"Siemens SENTRON 3VA1220-4GF42-0AB0 molded case circuit breaker, 200 A rated, 4-pole, TM240 release. Breaking capacity 121 kA at 240 V, 75.6 kA at 415 V. Current lifecycle stage. So","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 HP","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":"3VA9988-0AA11","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=568424&mlfb=3VA1220-4GF42-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0AB0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1220-4GF42-0AB0 at 415 V?","answer":"75.6 kA at 415 V. This is the rating for a three-phase 400 V-class system; the breaker also carries 121 kA at 240 V, 52.5 kA at 440 V, 17 kA at 500 V, and 11.9 kA at 690 V."},{"question":"Where can I buy 3VA1220-4GF42-0AB0 and get current pricing?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"Does 3VA1220-4GF42-0AB0 include auxiliary contacts?","answer":"Yes, it ships with two auxiliary switches (HP type) pre-installed for status feedback."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0AB0","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/3VA1220-4GF42-0AB0 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}}