{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-7MS32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-7MS32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-7MS32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-7MS32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-7MS32-0AA0, molded case circuit breaker, 3-pole, 25 A rated continuous current, ETU310M electronic trip unit, interrupting capacity 330 kA at 240 V AC, 242 kA at 415 V AC, 187 kA at 500 V AC, 3.7 kA at 690 V AC.","salesMarkdown":"The Siemens SENTRON 3VA2125-7MS32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 25 A continuous current, with an adjustable overload and short-circuit trip range from 75 A minimum to 375 A maximum. It uses the ETU310M electronic trip unit, which is a microprocessor-based release designed for motor and starter protection — the 'M' in the designation stands for motor protection, meaning the trip curve is shaped to handle inrush without nuisance tripping while still providing fast fault clearing. This MCCB sits in the SENTRON family, Siemens' standard line for distribution and motor branch circuits in industrial panels. The 3VA platform replaced the older 3VL series and is current-production, so it's what you'll get on a new BOM or as a like-for-like replacement in an existing SENTRON panel. At 240 V AC this breaker handles 330 kA — that's extremely high, typical for a feeder breaker close to a large transformer or in a high-fault-current industrial service entrance. At 415 V and 440 V it's still 242 kA, dropping to 187 kA at 500 V, and 3.7 kA at 690 V. ## Thermal performance and environment Maximum power loss is 0.6 W, negligible for panel thermal budgeting.","metaTitle":"3VA2125-7MS32-0AA0 SENTRON MCCB, 25 A, 3-Pole, ETU310M, 330","metaDescription":"Siemens SENTRON 3VA2125-7MS32-0AA0 molded case circuit breaker, 25 A continuous, 3-pole, ETU310M trip unit. Interrupting capacity 330 kA at 240 V AC. Current production. Available","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","Maximum":"375 A","Minimum":"75 A","at 240 V":"330 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"187 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","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Starter protection","Communication Function":"No","Phase Failure Detection":"No","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","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":"C","Mechanical Service Life (Operating Cycles) / Typical":"25 000","Type Of Electrical Connection / For Main Current Circuit":"on both sides nut keeper kit","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"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=569634&mlfb=3VA2125-7MS32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-7MS32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2125-7MS32-0AA0 and get a price?","answer":"This part is sourced and quoted to order through independent distribution. Submit an RFQ — availability and current pricing are confirmed at quote time."},{"question":"What is the interrupting capacity of this MCCB at 240 V?","answer":"330 kA at 240 V AC, dropping to 242 kA at 415/440 V, 187 kA at 500 V, and 3.7 kA at 690 V."},{"question":"What trip unit does the 3VA2125-7MS32-0AA0 use?","answer":"It uses the ETU310M electronic trip unit — the 'M' indicates motor/starter protection profile with adjustable overload and short-circuit settings from 75 A to 375 A."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-7MS32-0AA0","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/3VA2125-7MS32-0AA0 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}}