{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-5HK32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-5HK32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-5HK32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-5HK32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-5HK32-0AA0, molded case circuit breaker, 3-pole, 25 A, 187 kA interrupting at 240 V, ETU340 electronic release, line protection.","salesMarkdown":"## What This MCCB Handles and Where It Fits That means you can tune it for selective coordination downstream of a main breaker — not just a thermal-magnetic clunk. It's a line-protection design, so it's built for branch-circuit or feeder duty on three-phase systems, not for motor or generator protection. The interrupting ratings are what set this breaker apart. At 240 V it clears 187 kA — enough for high-fault-capacity service entrances or panels fed by large transformers. At 415 V and 440 V you get 121 kA, and at 500 V it still manages 75.6 kA. There's no trip indicator, no undervoltage release, and no ground-fault monitoring built in, so plan for external devices if those are needed. Maximum power dissipation is just 0.6 W — negligible heat inside a sealed enclosure. ## Integration Checks for the Panel Mounts on the standard DIN-rail or panel-mount pattern Siemens uses across the SENTRON 3VA family. Terminals accept copper or aluminum conductors per the manufacturer's torque specs on the nameplate. No communication module means no remote monitoring; if you need that, step up to the 3VA2 with COM option. ## What the ETU340 Release Gives You That's LSI protection — you can set selectivity with downstream breakers on time-current curves, which is harder with a thermal-magnetic that only gives you fixed long-time and instantaneous. It's powered by the load current itself, so no external control power needed. The continuous rating of 25 A is the frame rating; the trip unit lets you dial it down for smaller loads.","metaTitle":"Siemens 3VA2125-5HK32-0AA0 SENTRON MCCB, 25 A, 3-Pole, 187 k","metaDescription":"Siemens 3VA2125-5HK32-0AA0 SENTRON molded case circuit breaker, 25 A continuous, 3-pole, 187 kA interrupting at 240 V. Active production. Quoted to order against an RFQ.","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":"3VA2125-5HK32-0AA0","Height":"181 mm","Maximum":"375 A","Minimum":"375 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 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","description":"circuit breaker 3VA2 IEC frame 160 breaking capacity class M Icu=55kA @ 415V 3-pole, line protection ETU340, ELISA LI, In=25A overload protection Ir=10A...25A short-circuit protection Ii=15 x In nut keeper kit","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":"M","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,"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=158209&mlfb=3VA2125-5HK32-0AA0"},"ai":{"faq":[{"question":"Does this breaker require derating at high ambient temperatures?","answer":"No derating needed. The 25 A continuous rating holds from -25 °C to 70 °C operating ambient. Storage range is -40 °C to 80 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-5HK32-0AA0","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/3VA2125-5HK32-0AA0 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}}