{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1080-3ED42-0AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1080-3ED42-0AF0","canonicalUrl":"https://aoctrl.com/siemens/3VA1080-3ED42-0AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1080-3ED42-0AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1080-3ED42-0AF0, molded case circuit breaker, 4-pole, 80 A rated continuous current Iu, line protection, TM210 thermal-magnetic release, 75.6 kA at 240 V, IP40 front.","salesMarkdown":"## What this MCCB is and where it fits The Siemens SENTRON 3VA1080-3ED42-0AF0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection — meaning it sits at the feeder or branch level in a distribution panel, guarding cables and busbars against overload and short circuit. It carries a rated continuous current Iu of 80 A and a TM210 thermal-magnetic release, so the thermal element handles sustained overloads while the magnetic element clears high fault currents fast. The interrupting ratings climb with voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V — the 240 V and 415 V figures are the ones that matter for most industrial low-voltage panels. The rated insulation voltage Ui is 800 V, which gives headroom for 690 V systems without derating the insulation path. ## Thermal derating and panel integration The 80 A rating holds flat from 40 °C to 50 °C — 80 A at each of those ambient points. Above 50 °C it begins to step down: 76.8 A at 55 °C, 75.2 A at 60 °C, 73.6 A at 65 °C, and 72 A at 70 °C. If the panel ambient runs at 60 °C, plan for 75.2 A continuous, not the full 80 A. The enclosure footprint is 130 mm high, 101.6 mm wide, and 70 mm deep — a standard MCCB slice that fits most DIN-rail or mounting-plate layouts. IP40 on the front means the breaker face is protected against tools and wires larger than 1 mm, but the body is not sealed against water; keep it inside a rated enclosure for wet or washdown areas. It ships with 1 auxiliary switch and 1 trip alarm switch (HQ type), so you get a remote status signal without adding a separate accessory block.","metaTitle":"Siemens 3VA1080-3ED42-0AF0 SENTRON MCCB, 80 A, 4-Pole, 75.6","metaDescription":"Siemens SENTRON 3VA1080-3ED42-0AF0 molded case circuit breaker, 80 A, 4-pole, 75.6 kA at 240 V. Line protection, TM210 release, IP40 front. Quoted to order against an 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":"101.6 mm","Height":"130 mm","at 240 V":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 690 V":"7.5 kA","at 40 °C":"80 A","at 45 °C":"80 A","at 50 °C":"80 A","at 55 °C":"76.8 A","at 60 °C":"75.2 A","at 65 °C":"73.6 A","at 70 °C":"72 A","Trip indicator":"Yes","Number of poles":"4","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"1 auxiliary switch + 1 trip alarm switch HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"80 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"without auxiliaryrelease","Ground fault monitoring version":"Without","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","Design of the N-conductor protection":"Without","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"600 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"No","Adjustable response value current / Ir max.":"80 A","Adjustable response value current / li max.":"800 A","Adjustable response value current / li min.":"800 A","Adjustable response value current / lr min.":"80 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching capacity class of the circuit breaker":"N","Max. rated operational current of the frame size":"100 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"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=354006&mlfb=3VA1080-3ED42-0AF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1080-3ED42-0AF0/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3VA1080-3ED42-0AF0 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 listed here because each project quantity and delivery timeline is handled individually."},{"question":"What are the interrupting ratings at common voltages?","answer":"At 240 V it interrupts 75.6 kA; at 415 V, 52.5 kA; at 440 V, 32 kA; and at 690 V, 7.5 kA. The 240 V and 415 V ratings are the ones that typically govern selection for low-voltage industrial panels."},{"question":"What is the ambient temperature derating curve?","answer":"The 80 A rating holds from 40 °C to 50 °C. At 55 °C it derates to 76.8 A, at 60 °C to 75.2 A, at 65 °C to 73.6 A, and at 70 °C to 72 A. If your panel ambient exceeds 50 °C, use the derated value for continuous load planning."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1080-3ED42-0AF0","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/3VA1080-3ED42-0AF0 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}}