{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-7HK32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-7HK32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-7HK32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-7HK32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-7HK32-0AA0, molded case circuit breaker, 3-pole, 25 A, ETU340 electronic trip unit, line protection design.","salesMarkdown":"## SENTRON 3VA2125-7HK32-0AA0 — 25 A MCCB with ETU340 trip unit The Siemens 3VA2125-7HK32-0AA0 is a SENTRON molded case circuit breaker rated for 25 A continuous current with no derating across the full -25 °C to 70 °C operating range — the same 25 A holds at 40 °C, 55 °C, and 65 °C, so you don't have to upsize for a warm panel. Rated insulation voltage is 800 V, and the interrupting ratings climb to 330 kA at 240 V, 242 kA at 415 V, and 187 kA at 500 V, dropping to 3.7 kA at 690 V — enough headroom for most distribution panels without cascading upstream breakers. Maximum power loss is 0.6 W — negligible for thermal budgeting inside a crowded enclosure.","metaTitle":"Siemens 3VA2125-7HK32-0AA0 SENTRON MCCB, 25 A, 3-Pole, ETU34","metaDescription":"Siemens 3VA2125-7HK32-0AA0 SENTRON molded case circuit breaker, 25 A continuous, 3-pole, ETU340 electronic trip, 330 kA at 240 V. Active production, sourced to order. Request quote","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":"375 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":"Line protection","Communication Function":"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":"ETU340","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":"ELISA LI","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=231448&mlfb=3VA2125-7HK32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-7HK32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting rating of this MCCB at 240 V?","answer":"It is rated for 330 kA at 240 V, 242 kA at 415 V, and 187 kA at 500 V, with a drop to 3.7 kA at 690 V."},{"question":"What trip unit does the 3VA2125-7HK32-0AA0 use?","answer":"It uses the ETU340 electronic overcurrent release, which supports adjustable protection curves for selectivity coordination."},{"question":"Does the 25 A rating derate at higher ambient temperatures?","answer":"No — the 25 A continuous rating holds steady from -25 °C up to 70 °C, so no derating is needed for warm panel environments."},{"question":"Where can I buy 3VA2125-7HK32-0AA0 and get current pricing?","answer":"This part is available to order through our independent distribution channel. Submit an RFQ and we'll confirm availability and current pricing at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-7HK32-0AA0","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/3VA2125-7HK32-0AA0 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}}