{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-0HM36-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-0HM36-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-0HM36-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-0HM36-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA series molded case circuit breaker, 3VA2125-0HM36-0AA0, 3-pole, 25 A continuous current, ETU330 electronic trip unit, 440 kA breaking capacity at 415 V, line protection design.","salesMarkdown":"It carries a continuous rated current of 25 A across the full ambient temperature range from 40 °C to 70 °C, so you don't have to derate it for a warm panel — that 25 A holds all the way up to 70 °C. The 3-pole construction and 800 V rated insulation voltage suit it for 400 V and 690 V line feeds. The ETU330 electronic trip unit handles the curve shaping and ground-fault detection; the unit supports summation current formation on the L-conductor for ground-fault monitoring. The 3VA2125-0HM36-0AA0 measures 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint that fits existing SENTRON panel cutouts and busbar systems. No undervoltage release or communication function on this variant; the trip indicator is not fitted, and there's no voltage-trigger option. ## Ground-fault and protection functions Grounding protection is built in — the product function includes grounding protection, and the ground-fault monitoring version uses summation current formation on the L-conductor. That means it can detect leakage currents by summing the phase currents, which is the typical approach for solidly-grounded systems. No separate measurement function or communication module on this order code.","metaTitle":"Siemens 3VA2125-0HM36-0AA0 SENTRON MCCB, 25 A, 3-Pole, ETU33","metaDescription":"Siemens SENTRON 3VA2125-0HM36-0AA0 molded case circuit breaker, 25 A continuous, 3-pole, ETU330 release. Breaking capacity 440 kA at 415 V. Current production. Sourced to order aga","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":"3VA2125-0HM36-0AA0","Height":"181 mm","Maximum":"300 A","Minimum":"38 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, line protection ETU330, LIG, In=25A overload protection Ir=10A... 25A short circuit protection Ii=1,5...12 x In ground fault protection Ig=0,6... 1 x In, tg=0,1/0,3s cable connection","Initial Value":"15 A","Trip Indicator":"No","Number Of Poles":"3","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":"0.5 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Summation current formation L-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","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":"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=1417436&mlfb=3VA2125-0HM36-0AA0"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA2125-0HM36-0AA0 at 415 V?","answer":"Rated breaking capacity is 440 kA at 415 V and 187 kA at 690 V, giving substantial short-circuit interruption capability for industrial distribution."},{"question":"What trip unit does this MCCB use?","answer":"It uses the ETU330 electronic trip unit, which supports line protection and ground-fault monitoring via summation current formation on the L-conductor."},{"question":"Where can I buy 3VA2125-0HM36-0AA0 and how is it quoted?","answer":"This MCCB is sourced through independent distribution channels and quoted to order against an RFQ. Availability and current pricing are confirmed at the time of quote request."},{"question":"Does 3VA2125-0HM36-0AA0 drop into a panel specified for 3VA2163-8HM32-0AA0?","answer":"Both are 3-pole SENTRON MCCBs in the same 105 mm wide footprint, so the physical fit and busbar connection are the same. The key difference is the continuous current rating — this unit is 25 A, while the 3VA2163 variant is rated higher. Verify the load current before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-0HM36-0AA0","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/3VA2125-0HM36-0AA0 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}}