{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2125-5HN32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2125-5HN32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2125-5HN32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2125-5HN32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2125-5HN32-0AA0, molded case circuit breaker, 3-pole, 25 A, ETU350 electronic trip unit, line protection design.","salesMarkdown":"This is a line-protection design — it sits upstream of branch feeders or downstream of a main breaker, protecting cables and buswork against overloads and short circuits. Let me show you why the trip unit matters: the ETU350 gives you adjustable thermal and magnetic settings, so you can dial in the protection curve to match your load without swapping hardware. At 240 V this breaker clears 187 kA, at 415 V and 440 V it handles 121 kA, at 500 V it's rated for 75.6 kA, and at 690 V it still holds 3.7 kA. That kind of headroom means you can use it in high-fault locations like a main service entrance or a transformer secondary without worrying about cascading failure upstream. Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — that's about 4.13 by 7.13 by 3.39 inches. If you're swapping this into an existing panel, check that the busbar or cable lugs have room for the 86 mm depth behind the door.","metaTitle":"Siemens 3VA2125-5HN32-0AA0 SENTRON MCCB, 25 A, 3-Pole, ETU35","metaDescription":"Siemens SENTRON 3VA2125-5HN32-0AA0 molded case circuit breaker, 25 A continuous, 3-pole, ETU350 trip unit. Breaking capacity 187 kA at 240 V. Active production. Sourced to order.","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":"300 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","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":"ETU350","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":"LSI","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,"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=20058&mlfb=3VA2125-5HN32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2125-5HN32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is 3VA2125-5HN32-0AA0's listed depth on this component line?","answer":"The depth is 86 mm (3.39 inches). That is the dimension from the mounting surface to the front of the breaker — important for door clearance in a retrofit panel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2125-5HN32-0AA0","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/3VA2125-5HN32-0AA0 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}}