{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-7HM46-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-7HM46-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-7HM46-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-7HM46-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON molded case circuit breaker, 3VA2125-7HM46-0AA0, 4-pole, 25 A rated continuous current, adjustable thermal-magnetic trip 38-300 A, 330 kA breaking capacity at 240 V AC, line protection with summation current ground-fault monitoring.","salesMarkdown":"## What this MCCB does on the line The Siemens SENTRON 3VA2125-7HM46-0AA0 is a 4-pole molded case circuit breaker rated for 25 A continuous current, with an adjustable thermal-magnetic trip unit covering 38 A to 300 A. Breaking capacity reaches 330 kA at 240 V AC, dropping to 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V. It is a standalone protective device, not a smart breaker. No rewiring is needed if replacing a same-frame 3VA breaker; the mounting footprint and busbar connections are identical across the series.","metaTitle":"Siemens 3VA2125-7HM46-0AA0 SENTRON MCCB, 4-Pole, 25 A, 38-30","metaDescription":"Siemens SENTRON 3VA2125-7HM46-0AA0 molded case circuit breaker. 4-pole, 25 A continuous, adjustable 38-300 A. 330 kA at 240 V. Line protection with ground-fault monitoring. Current","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"140 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]":"5.51 in","Height [In]":"7.13 in","Initial Value":"15 A","Trip Indicator":"No","Number Of Poles":"4","Voltage Trigger":"No","lifecycle_stage":"current","Full-Scale Value":"25 A","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":"Summation current formation L + N conductor","Continuous Current / Rated Value":"25 A","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"ETU330","protection class IP / on the front":"IP40","design of the N-conductor protection":"adjustable OFF; 100%","Product Function / Grounding Protection":"Yes","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":"LIG","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=347002&mlfb=3VA2125-7HM46-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-7HM46-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for 3VA2125-7HM46-0AA0?","answer":"It is a 4-pole, 25 A continuous MCCB with an adjustable trip setting from 38 A to 300 A. Breaking capacity is 330 kA at 240 V AC, 242 kA at 415 V, and 3.7 kA at 690 V. Rated insulation voltage is 800 V."},{"question":"Will 3VA2125-7HM46-0AA0 drop into a panel specified around 3VA2163-8HM32-0AA0?","answer":"Both are SENTRON 3VA frame breakers with the same 140 mm width, 86 mm depth, and 181 mm height, so the physical footprint is identical. The 3VA2125-7HM46-0AA0 has a lower continuous rating (25 A vs the 3VA2163's higher rating) and different trip settings, but it mounts on the same busbar and DIN-rail pattern without rewiring."},{"question":"Where can I buy 3VA2125-7HM46-0AA0 and how is it quoted?","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 for a firm price and lead time."},{"question":"What compliance documentation does Siemens provide for this MCCB?","answer":"As a SENTRON series product, the 3VA2125-7HM46-0AA0 carries IEC 60947-2 certification for molded case circuit breakers. Siemens provides a declaration of conformity covering the Low Voltage Directive, RoHS, and REACH compliance on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-7HM46-0AA0","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/3VA2125-7HM46-0AA0 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}}