{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-5MN36-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-5MN36-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-5MN36-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-5MN36-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-5MN36-0AA0, molded case circuit breaker, 3-pole, 25 A, ETU350M electronic release, interrupting rating 187 kA at 240 V AC.","salesMarkdown":"The Siemens SENTRON 3VA2125-5MN36-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 25 A continuous current, flat across the entire -25 °C to 70 °C operating range — no derating needed as the panel warms up. Its interrupting capacity hits 187 kA at 240 V AC, dropping to 121 kA at 415 V and 440 V, then 75.6 kA at 500 V, and 3.7 kA at 690 V. ## Motor protection with adjustable trip class This MCCB is designated for motor protection duty and carries the ETU350M electronic overcurrent release. The trip class is field-adjustable among 10A, 10E, and 20E — so you can match the thermal memory to the motor's starting profile: 10A for short acceleration times (standard pumps, fans), 10E for slightly longer starts, and 20E for high-inertia loads like centrifuges or crushers that take several seconds to reach speed. Dimensions are 105 mm wide, 181 mm high, and 86 mm deep — a standard 3-pole MCCB footprint that drops into most Siemens 3VA panelboards and switchgear cubicles without busbar rework. ## Selectivity and coordination The flat 25 A rating across the full temperature range means no nuisance tripping in hot enclosures. Power loss is only 0.6 W maximum — negligible for panel thermal budgeting.","metaTitle":"Siemens 3VA2125-5MN36-0AA0 SENTRON MCCB, 25 A, 187 kA at 240","metaDescription":"Siemens SENTRON 3VA2125-5MN36-0AA0 molded case circuit breaker, 25 A rated current, 187 kA interrupting at 240 V. ETU350M release, adjustable trip class. Current production. Quoted","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"105 mm","Height":"181 mm","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"3.7 kA","at 40 °C":"25 A","at 45 °C":"25 A","at 50 °C":"25 A","at 55 °C":"25 A","at 60 °C":"25 A","at 65 °C":"25 A","at 70 °C":"25 A","Depth [In]":"3.39 in","Width [In]":"4.13 in","Height [In]":"7.13 in","Trip Indicator":"No","Number Of Poles":"3","Product version":"Motor 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":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"0.6 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","rated insulation voltage Ui":"800 V","Courant permanent assigné Iu":"25 A","Ground-Fault Monitoring Version":"Without","adjustable trip class (Tc CLASS)":"10A, 10E, 20E","Design Of The Overcurrent Release":"ETU350M","protection class IP / on the front":"IP40","operating power / at AC-3 / at 230 V":"5 500 W","operating power / at AC-3 / at 400 V":"11 000 W","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Adjustable response value current / li max.":"375 A","Adjustable response value current / li min.":"375 A","Neutral conductors / upgradeable/retrofittable":"No","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"E","Max. rated operational current of the frame size":"160 A","Mechanical Service Life (Switching Cycles) / Typical":"25 000","Type Of Electrical Connection / For Main Current Circuit":"double-sided box terminal","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (6 - 120 mm²)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/641a6843e8dc2f758bb6426196efa871.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569627&mlfb=3VA2125-5MN36-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-5MN36-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting rating of 3VA2125-5MN36-0AA0 at 240 V?","answer":"187 kA at 240 V AC, which covers the full fault current available from most large 240 V distribution transformers."},{"question":"What trip classes are available on this MCCB?","answer":"Adjustable among 10A, 10E, and 20E via the ETU350M electronic release, matching motor start profiles from short acceleration to high-inertia loads."},{"question":"Where can I buy 3VA2125-5MN36-0AA0?","answer":"Sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"Does 3VA2125-5MN36-0AA0 include phase failure protection?","answer":"Yes, phase failure detection is built into the ETU350M release, preventing single-phase motor damage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-5MN36-0AA0","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/3VA2125-5MN36-0AA0 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}}