{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-4GF42-0JH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-4GF42-0JH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0JH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0JH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1220-4GF42-0JH0, molded case circuit breaker, 200 A, 4-pole, 121 kA interrupting at 240 V, line protection design, shunt trip (STL), 2 aux + 1 trip alarm switch.","salesMarkdown":"The interrupting capacity hits 121 kA at 240 V and still delivers 75.6 kA at 415 V — enough to handle high-fault utility feeds without cascading upstream. At 690 V it still breaks 11.9 kA, so it holds up on 480Y/277 V or 600 V industrial services. Thermal derating starts at 55 °C: 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, 176 A at 70 °C. This is a line-protection breaker — no ground-fault module, no communication function. The auxiliary release is factory-fitted, so you don't need to open the cover to add one in the field. Dimensions: 140 mm wide, 158 mm tall, 70 mm deep. Four-pole frame takes up about 5.5 inches of DIN-rail width — plan the gland plate and wireway fill before you lay out the panel.","metaTitle":"Siemens 3VA1220-4GF42-0JH0 SENTRON MCCB, 200 A, 4-Pole, 121","metaDescription":"Siemens 3VA1220-4GF42-0JH0 SENTRON molded case circuit breaker, 200 A, 4-pole, 121 kA at 240 V. Line protection with shunt trip. Current lifecycle. Sourced to order against RFQ.","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":"Yes","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":"3VA12204GF420AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","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":"100%","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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","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=568446&mlfb=3VA1220-4GF42-0JH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4GF42-0JH0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of 3VA1220-4GF42-0JH0 at different voltages?","answer":"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. These ratings cover most industrial distribution voltages from 208Y/120 V through 600 V."},{"question":"What is the thermal derating curve for this 200 A MCCB?","answer":"Full 200 A up to 50 °C. At 55 °C it derates to 194 A, at 60 °C to 188 A, at 65 °C to 182 A, and at 70 °C to 176 A. If your panel ambient runs above 50 °C, size the load side for the derated value."},{"question":"Where can I buy 3VA1220-4GF42-0JH0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."},{"question":"What auxiliary switches and releases come with this breaker?","answer":"It includes two auxiliary switches plus one trip alarm switch (HQ), and a factory-fitted shunt trip (STL) for remote opening. No undervoltage release is installed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-4GF42-0JH0","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/3VA1220-4GF42-0JH0 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}}