{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1580-5EF32-0AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1580-5EF32-0AF0","canonicalUrl":"https://aoctrl.com/siemens/3VA1580-5EF32-0AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1580-5EF32-0AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1580-5EF32-0AF0, 3-pole molded case circuit breaker, 800 A at 40 °C, 187 kA breaking capacity at 240 V, TM240 overcurrent release, line protection design.","salesMarkdown":"At 415 V and 440 V the interrupting rating holds at 121 kA; at 500 V it drops to 75.6 kA, and at 690 V to 52.5 kA. That derating curve is typical for MCCBs — the arc extinction gets harder as voltage rises. For a 480 V panel (common in North America) the relevant figure is the 500 V column at 75.6 kA, which still covers most utility transformer fault levels. ## Panel integration — dimensions, auxiliaries, and thermal management It ships with a factory-fitted auxiliary switch configuration: 1 auxiliary switch + 1 trip alarm switch HQ. That covers remote status and trip indication without a separate accessory order. The undervoltage release is absent by default, so if your safety circuit requires a shunt trip or UVR, you will need to add the appropriate module. Maximum power loss is 240 W at rated load; at 800 A continuous, that heat must be managed in the enclosure — plan for forced ventilation or a larger-than-minimum cabinet volume to stay below the 70 °C operating maximum. ## Selectivity and coordination — where this fits in a distribution hierarchy As a line-protection MCCB, this breaker is designed for the main or sub-feed position, not for branch-circuit motor protection. The TM240 release provides a fixed thermal curve that coordinates with downstream SENTRON 3VA or 5SY miniature breakers, provided the fault current stays within the 187 kA interrupting rating. For a 800 A main feeding 200 A or 400 A feeders, the selectivity margin is generous — the TM240 magnetic pickup is typically 10× In, so instantaneous trips start above 8000 A, giving downstream breakers time to clear. If you need ground-fault protection, note this variant ships without ground-fault monitoring; order the GF version or add an external ground-fault relay.","metaTitle":"Siemens 3VA1580-5EF32-0AF0 SENTRON MCCB, 800 A, 187 kA at 24","metaDescription":"Siemens SENTRON 3VA1580-5EF32-0AF0 molded case circuit breaker, 800 A rated at 40 °C, 187 kA breaking at 240 V. 3-pole, TM240 release, line protection. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"120 mm","Width":"210 mm","title":"3VA1580-5EF32-0AF0","Height":"320 mm","Maximum":"0 A","Minimum":"0 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"52.5 kA","at 40 °C":"800 A","at 45 °C":"800 A","at 50 °C":"800 A","at 55 °C":"780 A","at 60 °C":"761 A","at 65 °C":"741 A","at 70 °C":"722 A","Depth [In]":"4.72 in","Width [In]":"8.27 in","Height [In]":"12.6 in","description":"circuit breaker 3VA1 IEC frame 1000 breaking capacity class M Icu=55kA @ 415V 3-pole, line protection TM240, ATAM, In=800A overload protection Ir=560A...800A short-circuit protection Ii=5 x In nut keeper kit 1 auxiliary switch HQ 1 trip alarm switch HQ","Trip Indicator":"Yes","Number Of Poles":"3","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":"240 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA15805EF320AA0","Design Of The Auxiliary Switch":"1 auxiliary switch + 1 trip alarm switch HQ","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","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"750 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":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Operating Cycles) / Typical":"10 000","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0ce7977805b8280afb8701b472881340.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=645556&mlfb=3VA1580-5EF32-0AF0"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1580-5EF32-0AF0 at 480 V?","answer":"The 500 V column is the closest published rating: 75.6 kA. At 480 V the actual interrupting capacity will be slightly higher than the 500 V figure, but Siemens does not publish a separate 480 V value for this variant. Use the 500 V rating conservatively for coordination studies."},{"question":"What auxiliary switches come fitted on 3VA1580-5EF32-0AF0?","answer":"It ships with 1 auxiliary switch + 1 trip alarm switch HQ. That provides one normally-open/normally-closed contact for remote status and one for trip indication, factory-installed."},{"question":"What is the thermal derating for 3VA1580-5EF32-0AF0 above 40 °C?","answer":"Rated 800 A at 40 °C, 45 °C, and 50 °C. At 55 °C it derates to 780 A, at 60 °C to 761 A, at 65 °C to 741 A, and at 70 °C to 722 A. Above 70 °C ambient the breaker must not be operated."},{"question":"Where can I buy 3VA1580-5EF32-0AF0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial distribution. Availability and current pricing are confirmed at quote time. Submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1580-5EF32-0AF0","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/3VA1580-5EF32-0AF0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}