{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1150-3EF32-0AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1150-3EF32-0AF0","canonicalUrl":"https://aoctrl.com/siemens/3VA1150-3EF32-0AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1150-3EF32-0AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1150-3EF32-0AF0, molded case circuit breaker, 3-pole, line protection, TM240 overcurrent release, 50 A rated continuous current, 75.6 kA at 240 V.","salesMarkdown":"The TM240 thermal-magnetic overcurrent release is fixed — no field-swap of the trip unit. Breaking capacity runs 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V; that 75.6 kA figure at 240 V gives headroom for high-fault utility feeds or transformer secondaries where the available fault current is stiff. IP40 on the front means the breaker face is protected against tools and small wires, but the panel enclosure handles the rest. At 55 °C it steps to 48 A, at 60 °C to 47 A, at 65 °C to 46 A, and at 70 °C to 45 A. The TM240 release is non-adjustable on the time curve (tr min. and tr max. both 1 s), so coordination with downstream devices relies on the fixed thermal band, not a dial. The 76.2 mm width is a standard 3-pole MCCB footprint — it occupies three 25.4 mm module positions on a DIN rail or panel-mount plate.","metaTitle":"Siemens 3VA1150-3EF32-0AF0 SENTRON MCCB, 50 A, 75.6 kA at 24","metaDescription":"Siemens SENTRON 3VA1150-3EF32-0AF0 molded case circuit breaker, 3-pole, 50 A, TM240 release, 75.6 kA breaking capacity at 240 V. Current lifecycle stage. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","at 240 V":"75.6 kA","at 415 V":"52.5 kA","at 440 V":"32 kA","at 690 V":"10.5 kA","at 40 °C":"50 A","at 45 °C":"50 A","at 50 °C":"50 A","at 55 °C":"48 A","at 60 °C":"47 A","at 65 °C":"46 A","at 70 °C":"45 A","Trip indicator":"Yes","Number of poles":"3","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","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":"50 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"without auxiliaryrelease","Ground fault monitoring version":"Without","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","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":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"50 A","Adjustable response value current / li max.":"500 A","Adjustable response value current / li min.":"250 A","Adjustable response value current / lr min.":"35 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":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Mechanical service life (switching cycles) / typical":"15 000","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=78467&mlfb=3VA1150-3EF32-0AF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1150-3EF32-0AF0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1150-3EF32-0AF0 and what is the lead time?","answer":"The breaker 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 lead-time number is published here."},{"question":"What is the breaking capacity of 3VA1150-3EF32-0AF0 at different voltages?","answer":"75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V. The 240 V figure is the highest and governs high-fault applications like transformer secondaries."},{"question":"Does 3VA1150-3EF32-0AF0 include auxiliary contacts?","answer":"Yes, it ships with 1 auxiliary switch plus 1 trip alarm switch (HQ type) factory-fitted — no separate accessory order needed for basic status signaling."},{"question":"What is the thermal derating curve for this MCCB?","answer":"50 A from 40 °C to 50 °C, then 48 A at 55 °C, 47 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. Use the 45 A floor for sealed enclosures with no forced cooling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1150-3EF32-0AF0","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/3VA1150-3EF32-0AF0 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}}