{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-4EE46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-4EE46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-4EE46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4EE46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-4EE46-0AA0, molded case circuit breaker, 4-pole, 20 A, TM220 release, breaking capacity 121 kA at 240 V, 75.6 kA at 415 V.","salesMarkdown":"It is a 4-pole unit, meaning it switches and protects all three phases plus neutral in a three-phase four-wire system — common for main incomers or feeder circuits where neutral protection is required. This MCCB is rated 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. At 415 V — the most common three-phase industrial voltage in IEC markets — 75.6 kA is a high-interrupting rating, suitable for installation close to large transformers or in high-fault-capacity switchboards where downstream breakers need a high upstream SCCR for selectivity. The breaker holds its full 20 A rating up to 55 °C ambient. At 60 °C it derates to 19 A, and it stays at 19 A through 70 °C. ## What the TM220 release means for the installer The TM220 designation means the thermal element (for overload protection) and the magnetic element (for short-circuit protection) are both fixed, not adjustable. The thermal pickup is calibrated to the 20 A frame rating; the magnetic instantaneous trip is set at the factory. The adjustable response value current (Ii max) is listed at 320 A — that is the maximum magnetic trip setting available on this release variant, not the actual setting, which is fixed. For applications needing field-adjustable overloads or short-circuit pickups, a different release (e.g., an electronic one) would be required. ## DC rating and optional accessories The maximum rated operational voltage for DC circuits is 600 V. The product extension field indicates a motor drive accessory is available as an option — this typically refers to a rotary handle or motor operator for remote or panel-door operation.","metaTitle":"Siemens 3VA1120-4EE46-0AA0 SENTRON MCCB, 20 A, 4-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1120-4EE46-0AA0 molded case circuit breaker, 20 A continuous, 4-pole, TM220 release. Breaking capacity 121 kA at 240 V. Current production. Quoted on request.","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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 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":"TM220","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","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.":"320 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":"S","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":"https://cdn.aoctrl.com/3aeb719ff49f5095f9ae89161a0afe40.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=96756&mlfb=3VA1120-4EE46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4EE46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-4EE46-0AA0 and how is it quoted?","answer":"This part is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of this MCCB at 415 V?","answer":"At 415 V the breaking capacity is 75.6 kA, which is a high-interrupting rating suitable for installation close to large transformers."},{"question":"Does 3VA1120-4EE46-0AA0 have an adjustable overload setting?","answer":"No, the TM220 release has a fixed thermal-magnetic characteristic. The thermal pickup is calibrated to the 20 A frame rating and the magnetic trip is factory-set."},{"question":"What is the depth of this MCCB?","answer":"The depth is 70 mm (2.76 in), width 101.6 mm (4 in), height 130 mm (5.12 in)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-4EE46-0AA0","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/3VA1120-4EE46-0AA0 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}}