{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-5EF42-0JA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-5EF42-0JA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-5EF42-0JA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-5EF42-0JA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1220-5EF42-0JA0, molded case circuit breaker, 4-pole, rated 200 A at 40 °C, interrupting 187 kA at 240 V, 70 mm depth, TM240 release, shunt trip.","salesMarkdown":"Rated 200 A continuous at 40 °C, it holds that current up to 50 °C before derating to 176 A at 70 °C — so in a hot panel near a kiln or furnace, you still get 176 A without tripping on ambient alone. That 187 kA figure at 240 V covers high-fault utility feeds; the 17 kA at 690 V still clears most industrial fault levels on 690 V distribution. ## Sizing and ambient derating The TM240 release is a fixed thermal-magnetic unit — no interchangeable trip block. Full 200 A rating holds through 50 °C; above that, derate linearly to 176 A at 70 °C. If your panel ambient runs 55 °C, the breaker is good for 194 A continuous. That derate curve is the number that governs real-world sizing, not the 200 A nameplate. The breaker measures 70 mm deep, 140 mm wide, and 158 mm high. The 70 mm depth leaves clearance for rear-connected busbars or a shallow enclosure.","metaTitle":"Siemens 3VA1220-5EF42-0JA0 SENTRON MCCB, 200 A, 4-Pole, 70 m","metaDescription":"Siemens SENTRON 3VA1220-5EF42-0JA0 molded case circuit breaker, 200 A at 40 °C, 4-pole, 70 mm depth, 187 kA at 240 V. Active 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","Maximum":"0 A","Minimum":"0 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 500 V":"30 kA","at 690 V":"17 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":"Yes","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":"3VA12205EF420AA0","Design Of The Auxiliary Release":"shunt trip (STL)","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":"without","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL32","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":"0","Switching Capacity Class Of The Circuit Breaker":"M","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=568596&mlfb=3VA1220-5EF42-0JA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-5EF42-0JA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1220-5EF42-0JA0 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the interrupting capacity of 3VA1220-5EF42-0JA0 at 240 V?","answer":"187 kA at 240 V, derating to 17 kA at 690 V."},{"question":"Does 3VA1220-5EF42-0JA0 include a shunt trip?","answer":"Yes, it includes a shunt trip (STL) auxiliary release."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-5EF42-0JA0","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/3VA1220-5EF42-0JA0 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}}