{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-6EF32-0DC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-6EF32-0DC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-6EF32-0DC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-6EF32-0DC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-6EF32-0DC0, molded case circuit breaker, 3-pole, rated 25 A, TM240 thermal-magnetic release, breaking capacity 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, 17 kA at 690 V.","salesMarkdown":"## What the breaking capacity numbers mean for your panel Its headline feature is the interrupting capacity: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 690 V. That 220 kA at 240 V means this breaker can safely clear a fault current up to 220,000 amps without welding its contacts or rupturing the case — critical for high-fault locations like transformer secondaries or large motor control centers where available fault current can exceed 100 kA. The 17 kA at 690 V tells you it's still usable on 690 V systems, but the fault-current ceiling drops sharply; don't spec it for a 690 V bus with more than 17 kA available. ## Thermal derating — don't cook it Above that, it derates: 24 A at 55 °C, 23.5 A at 60 °C, 23 A at 65 °C, and 22.5 A at 70 °C. Plan your load accordingly; don't crowd the breaker next to a heat source inside the cabinet. ## Built-in undervoltage release and auxiliary contacts That's useful for preventing automatic restart after a brownout or for safety circuits that need to drop the load on loss of control power. The integrated auxiliary trip is order code 3VA9608-0BB25 if you need a replacement. No trip indicator or voltage trigger on this variant; you'll need the auxiliary switch feedback to know its state remotely.","metaTitle":"Siemens 3VA1125-6EF32-0DC0 SENTRON MCCB, 25A, 220kA at 240V","metaDescription":"Siemens SENTRON 3VA1125-6EF32-0DC0 molded case circuit breaker, 25A rated, 3-pole, TM240 release, 220kA at 240V. Current production. Sourced to order. RFQ for pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","at 240 V":"220 kA","at 415 V":"154 kA","at 440 V":"121 kA","at 690 V":"17 kA","at 40 °C":"25 A","at 45 °C":"25 A","at 50 °C":"25 A","at 55 °C":"24 A","at 60 °C":"23.5 A","at 65 °C":"23 A","at 70 °C":"22.5 A","Trip indicator":"No","Number of poles":"3","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"Yes","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"25 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB25","Design of the overcurrent release":"TM240","Design of short-circuit protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","Protection class IP / on the front":"IP40","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"25 A","Adjustable response value current / li max.":"320 A","Adjustable response value current / li min.":"160 A","Adjustable response value current / lr min.":"18 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching capacity class of the circuit breaker":"H","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=158533&mlfb=3VA1125-6EF32-0DC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-6EF32-0DC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-6EF32-0DC0 and how is it quoted?","answer":"We source this MCCB through independent distribution and quote it to order against an RFQ. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 3VA1125-6EF32-0DC0 at different voltages?","answer":"220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 690 V."},{"question":"Does 3VA1125-6EF32-0DC0 include an undervoltage release?","answer":"Yes, it ships with an undervoltage release (UVR) installed as standard."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-6EF32-0DC0","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/3VA1125-6EF32-0DC0 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}}