{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-3GF46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-3GF46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-3GF46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3GF46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-3GF46-0AA0, molded case circuit breaker, line protection, 4-pole, 20 A, TM240 thermal-magnetic release, interrupting capacity 75.6 kA at 240 V.","salesMarkdown":"This is the breaker you spec when the branch needs a dedicated 4-pole disconnect with adjustable instantaneous trip — typical for feeder circuits in distribution panels where you need to coordinate downstream with upstream devices. ## Interrupting Capacity by Voltage Level Interrupting capacity varies significantly with system voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. At 240 V the 75.6 kA figure gives substantial headroom for high-fault industrial services; at 690 V the 11.9 kA still covers most standard distribution transformer secondary faults. The breaker holds its full 20 A rating from 45 °C through 55 °C ambient; at 60 °C it derates to 19 A, and holds there through 70 °C. That means in a warm panel — say 55 °C internal ambient — you still get the full 20 A without derating. Dimensions are 130 mm height, 101.6 mm width, 70 mm depth — fits standard 4-pole MCCB mounting footprints in SENTRON panelboards. Maximum power loss is 12 W, which matters for thermal budgeting in sealed enclosures.","metaTitle":"Siemens 3VA1120-3GF46-0AA0 SENTRON MCCB, 20 A, 4-Pole, TM240","metaDescription":"Siemens 3VA1120-3GF46-0AA0 SENTRON molded case circuit breaker, 20 A continuous, 4-pole, TM240 release. Interrupting capacity 75.6 kA at 240 V. Active production. Sourced to order","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"101.6 mm","Height":"130 mm","at 240 V":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 500 V":"11.9 kA","at 690 V":"11.9 kA","at 45 °C":"20 A","at 50 °C":"20 A","at 55 °C":"20 A","at 60 °C":"19 A","at 65 °C":"19 A","at 70 °C":"19 A","Depth [In]":"2.76 in","Width [In]":"4 in","Height [In]":"5.12 in","Number Of Poles":"4","Product version":"Line protection","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"12 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Courant permanent assigné Iu":"20 A","Ground-Fault Monitoring Version":"Without","Tension assignée d'isolement Ui":"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%","reference code / acc. to IEC 81346-2":"Q","Max. rated operational voltage Ue with DC":"600 V","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"320 A","Adjustable response value current / li min.":"160 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"N","Max. rated operational current of the frame size":"160 A","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (1.5 - 70 mm²)"}},"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=288981&mlfb=3VA1120-3GF46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-3GF46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-3GF46-0AA0 and get a price?","answer":"This part is sourced through independent distribution and quoted to order against an RFQ. Submit a request for the 3VA1120-3GF46-0AA0 to receive current pricing and availability — confirmed at quote time, not a stock count."},{"question":"What is the interrupting capacity at 415 V for this MCCB?","answer":"At 415 V the 3VA1120-3GF46-0AA0 interrupts 52.5 kA. That covers most European 400 V distribution systems with standard transformer impedances."},{"question":"What does the TM240 release designation mean?","answer":"TM240 means a thermal-magnetic release with a fixed 20 A continuous rating (the '20' in TM240) and an adjustable magnetic short-circuit pickup up to 320 A. The '240' refers to the frame size code, not the amp rating."},{"question":"What compliance documentation is available for this breaker?","answer":"The SENTRON 3VA series carries IEC 60947-2 certification for molded case circuit breakers. Specific RoHS and REACH declarations are provided with the product documentation; the reference code per IEC 81346-2 is Q."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-3GF46-0AA0","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/3VA1120-3GF46-0AA0 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}}