{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1220-4EF42-0JC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1220-4EF42-0JC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1220-4EF42-0JC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4EF42-0JC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON series, molded case circuit breaker (MCCB), order code 3VA1220-4EF42-0JC0, 200 A rated, 4-pole, 121 kA interrupting at 240 V, line protection with shunt trip release.","salesMarkdown":"Designed for line protection, it delivers interrupting ratings of 121 kA at 240 V and 75.6 kA at 415 V — figures that determine whether this breaker clears a fault without upstream damage in your selective coordination study. ## Interrupting Capacity and Thermal Derating This MCCB carries 200 A flat from 40 °C through 50 °C, then derates to 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C. The interrupting capacity drops 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. For a 480 V panel, the 52.5 kA figure governs — verify it exceeds your available fault current before bolting it into the switchboard. Footprint is 140 mm wide by 158 mm tall, with a 70 mm depth behind the panel. The 4-pole body occupies roughly 5.5 inches of DIN-rail or mounting-plate width — check your existing bus-bar takeoff spacing before committing the BOM line. ## Auxiliary and Shunt Trip Provisions No undervoltage release is installed.","metaTitle":"Siemens 3VA1220-4EF42-0JC0 SENTRON MCCB, 200 A, 4-Pole, 121","metaDescription":"Siemens 3VA1220-4EF42-0JC0 SENTRON molded case circuit breaker, 200 A, 4-pole, 121 kA at 240 V. Line protection with shunt trip. Current lifecycle. 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":"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":"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":"3VA12204EF420AA0","Design Of The Auxiliary Switch":"2 auxiliary switches 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":"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":"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=568419&mlfb=3VA1220-4EF42-0JC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1220-4EF42-0JC0/alternatives.json"},"ai":{"faq":[{"question":"How do I get pricing and availability for 3VA1220-4EF42-0JC0?","answer":"Submit an RFQ through this listing. Pricing and stock are confirmed at quote time; the part is sourced through independent distribution channels."},{"question":"What are the key interrupting ratings for 3VA1220-4EF42-0JC0?","answer":"The MCCB interrupts 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. Use the rating that matches your system voltage for coordination studies."},{"question":"What is the depth of 3VA1220-4EF42-0JC0?","answer":"The depth is 70 mm (2.76 in), with a width of 140 mm (5.51 in) and height of 158 mm (6.22 in)."},{"question":"What compliance documentation does Siemens provide for this MCCB?","answer":"As a SENTRON series MCCB, the 3VA1220-4EF42-0JC0 is designed to meet IEC 60947-2 and UL 489 standards. Specific RoHS/REACH declarations and the IEC/UL certificate are available from the manufacturer's documentation portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1220-4EF42-0JC0","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/3VA1220-4EF42-0JC0 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}}