{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1120-4ED16-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1120-4ED16-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1120-4ED16-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4ED16-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1120-4ED16-0AA0, 1-pole molded case circuit breaker, 20 A rated at 40 °C, 9 kA breaking capacity at 415 V AC, TM210 thermal-magnetic release, IP40 front protection, line protection design.","salesMarkdown":"Its 20 A rating holds flat from 40 °C through 55 °C, only stepping to 19 A at 60 °C and above — so in a typical 40 °C panel environment you get the full 20 A without derating. That 9 kA interrupting capacity at 415 V AC is the number that governs fault clearance on a 400 V three-phase line; the 75.6 kA at 240 V is what you'd see on a single-phase 240 V service, but the 415 V figure is the one that decides whether this breaker clears a bolted fault upstream of a motor branch. The TM210 overcurrent release combines a thermal bimetal for overload protection and a magnetic coil for short-circuit trips — standard thermal-magnetic action, no electronic adjustments. At 25.4 mm wide (1 inch), it occupies a single pole space on the DIN rail, matching the footprint of a standard miniature breaker but with the higher SCCR of a molded-case construction. ## Integration — what fits where The 70 mm depth (2.76 in) and 130 mm height (5.12 in) mean it clears most standard 200 mm deep enclosures with room for wiring gutters. The 4 W maximum power loss is negligible in a populated distribution board, but if you're packing 40 of these in a small cabinet, sum the losses against the enclosure's dissipation rating. ## What the 415 V and 125 V ratings tell you Rated operating voltage is 415 V AC and 125 V DC — the AC figure matches standard three-phase line-to-line voltages in 400 V grids; the DC figure covers control circuits or battery-backed loads at 125 V nominal.","metaTitle":"Siemens 3VA1120-4ED16-0AA0 SENTRON MCCB, 1-Pole 20 A","metaDescription":"Siemens SENTRON 3VA1120-4ED16-0AA0 molded case circuit breaker, 1-pole, 20 A rated at 40 °C, 9 kA breaking at 415 V AC. TM210 release, IP40 front. Current production. Quoted to ord","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"25.4 mm","Height":"130 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"75.6 kA","at 415 V":"9 kA","at 40 °C":"20 A","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]":"1 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"1","Voltage Trigger":"No","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":"4 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"500 V","Design Of The Overcurrent Release":"TM210","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","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"415 V","operating voltage / at DC / rated value":"125 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"S","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"box terminal on both sides","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/25a44e3824a2b474f6d7314ede58f625.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=190728&mlfb=3VA1120-4ED16-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1120-4ED16-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1120-4ED16-0AA0 and how is it quoted?","answer":"This breaker is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — send a request for volume or single-unit pricing."},{"question":"What is the breaking capacity of 3VA1120-4ED16-0AA0 at 415 V?","answer":"9 kA at 415 V AC — that is the figure that governs fault clearance on a standard 400 V three-phase line. At 240 V AC the rating is 75.6 kA."},{"question":"What is the width of 3VA1120-4ED16-0AA0?","answer":"25.4 mm (1 inch) — one standard DIN-rail pole width, same as a miniature breaker footprint."},{"question":"Does 3VA1120-4ED16-0AA0 drop into a panel specified around 3VA1110-5EF32-0LA0?","answer":"Both are 1-pole SENTRON MCCBs on the same DIN-rail footprint, so the mechanical fit is identical. The difference is in the release and ratings: the 3VA1110-5EF32-0LA0 carries a different overcurrent release and interrupting capacity — verify the specific protection curve and SCCR against your panel's fault study before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1120-4ED16-0AA0","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/3VA1120-4ED16-0AA0 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}}