{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-0MS36-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-0MS36-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-0MS36-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-0MS36-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-0MS36-0AA0, molded case circuit breaker, motor protection design, 3-pole, 25 A continuous, ETU310M electronic overcurrent release, 440 kA at 415 V AC, IP40 front.","salesMarkdown":"## Siemens 3VA2125-0MS36-0AA0 — SENTRON MCCB for Motor Protection The Siemens 3VA2125-0MS36-0AA0 is a 3-pole SENTRON molded case circuit breaker (MCCB) designed specifically for motor protection, with a continuous current rating of 25 A and an ETU310M electronic overcurrent release. The ETU310M provides adjustable thermal-magnetic or electronic trip characteristics tailored to motor starting curves, avoiding nuisance tripping on inrush while protecting against overloads and short circuits. Its breaking capacity is rated at 440 kA at 415 V AC and 187 kA at 690 V AC — figures that place it in the high-interrupting category for industrial distribution. Rated insulation voltage is 800 V, and the operating voltage at AC is 690 V, so it suits 400 V and 690 V line-to-line systems common in European and North American industrial plants. ## Integration Notes — Panel Fit and Derating Dimensions are 105 mm wide, 181 mm high, and 86 mm deep — a standard SENTRON 3VA2 frame size that fits Siemens panelboards and most DIN-rail enclosures with the appropriate mounting adapter. The continuous current rating holds at 25 A across the full ambient range from 40 °C to 70 °C — no derating needed for elevated panel temperatures up to that limit. Maximum power loss is 0.5 W, negligible for thermal budgeting. If any of those are required for the application, they must be added via external modules or a different 3VA2 variant.","metaTitle":"Siemens 3VA2125-0MS36-0AA0 SENTRON MCCB, 25 A, 440 kA at 415","metaDescription":"Siemens 3VA2125-0MS36-0AA0 SENTRON molded case circuit breaker, 25 A continuous, 440 kA breaking capacity at 415 V AC. Motor protection design with ETU310M release. Sourced to orde","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","title":"3VA2125-0MS36-0AA0","Height":"181 mm","Maximum":"375 A","Minimum":"75 A","at 415 V":"440 kA","at 690 V":"187 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","description":"circuit breaker 3VA2 IEC frame 160 breaking capacity class E Icu=200 kA @ 415 V 3-pole motor starter protection ETU310M, I, In=25A short circuit protection Ii=3...15 x In cable connection","Trip Indicator":"No","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":"Motor protection","Communication Function":"No","Phase Failure Detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"0.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"25 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU310M","protection class IP / on the front":"IP40","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"160 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"I","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"E","Mechanical Service Life (Operating 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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"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=1417773&mlfb=3VA2125-0MS36-0AA0"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA2125-0MS36-0AA0 at 415 V?","answer":"440 kA at 415 V AC, and 187 kA at 690 V AC. These are the maximum interrupting ratings; coordination with upstream devices must respect these limits."},{"question":"Where can I buy 3VA2125-0MS36-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ to receive a firm offer."},{"question":"What is the continuous current rating and does it derate with temperature?","answer":"The continuous current rating is 25 A, and it holds at that value from 40 °C through 70 °C ambient — no derating required within that range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-0MS36-0AA0","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/3VA2125-0MS36-0AA0 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}}