{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-7KP36-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-7KP36-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-7KP36-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-7KP36-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, Molded case circuit breaker, 3VA2125-7KP36-0AA0, 25 A, 3-pole, ETU850 electronic trip unit, line protection design.","salesMarkdown":"This MCCB delivers 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. The steep drop above 500 V is characteristic of a current-limiting design optimized for the 240–500 V range common in industrial distribution. For a 480 V panel, the 187 kA interrupting rating gives substantial headroom above typical available fault currents, so selectivity with downstream breakers is achievable without oversizing the upstream device. Maximum power dissipation is 0.6 W, negligible for thermal budgeting inside a crowded panel.","metaTitle":"Siemens 3VA2125-7KP36-0AA0 SENTRON MCCB, 25 A, 3-Pole, ETU85","metaDescription":"Siemens SENTRON 3VA2125-7KP36-0AA0 molded case circuit breaker, 25 A continuous, 3-pole, ETU850 electronic trip unit. Breaking capacity 330 kA at 240 V. Current lifecycle stage. Av","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":"300 A","Minimum":"38 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":"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":"Yes","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"25 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU850","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 40% to 160%","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":"LSI","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":"double-sided box terminal","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=430546&mlfb=3VA2125-7KP36-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-7KP36-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA2125-7KP36-0AA0 drop into a panel specified for 3VA2163-8JQ32-0AA0?","answer":"Both are 3-pole SENTRON MCCBs in the same 3VA frame family, so the mounting footprint and busbar connections are identical. The difference is in the trip unit — the 3VA2125-7KP36-0AA0 uses an ETU850 electronic trip unit rated 25 A, while the 3VA2163-8JQ32-0AA0 is a higher-current variant. No rewiring is needed if the panel bus and load cables are sized for the lower 25 A rating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-7KP36-0AA0","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/3VA2125-7KP36-0AA0 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}}