{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EF36-0KA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EF36-0KA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EF36-0KA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF36-0KA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5EF36-0KA0, molded case circuit breaker, 3-pole, 25 A rated continuous current (Iu), 187 kA breaking capacity at 240 V, line protection version with TM240 overcurrent release and shunt trip.","salesMarkdown":"Its interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V — numbers that give selectivity headroom on a high-fault panel main or feeder. No auxiliary contacts or communication module are fitted on this variant, so any remote status or trip indication must come from the optional 3VA9688-0BL33 auxiliary trip block. At 55 °C it derates to 24 A, at 60 °C to 23.5 A, at 65 °C to 23 A, and at 70 °C to 22.5 A. For a panel that runs warm — say, a densely packed line-up — the 55 °C derate point is where you size the load.","metaTitle":"Siemens 3VA1125-5EF36-0KA0 SENTRON MCCB, 25 A, 3-Pole, 187 k","metaDescription":"Siemens SENTRON 3VA1125-5EF36-0KA0 molded case circuit breaker, 25 A rated continuous current, 3-pole, 187 kA at 240 V. Active lifecycle, sourced to order. Request a quote.","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":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 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":"Yes","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"Without","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":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL33","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":"0","Protective function of the overcurrent release":"LI","Switching capacity class of the circuit breaker":"M","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":"box terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, round conductor terminal, stranded":"1 x (1.5 - 70 mm²)"}},"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=421533&mlfb=3VA1125-5EF36-0KA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF36-0KA0/alternatives.json"},"ai":{"faq":[{"question":"Who supplies 3VA1125-5EF36-0KA0 and how is it quoted for volume purchases?","answer":"This part is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time."},{"question":"What is 3VA1125-5EF36-0KA0's depth and width?","answer":"The depth is 70 mm and the width is 76.2 mm, fitting standard DIN-rail or mounting-plate cutouts."},{"question":"Does 3VA1125-5EF36-0KA0 include an auxiliary contact or communication?","answer":"No — this variant ships without auxiliary contacts and without a communication module. An optional auxiliary trip block (3VA9688-0BL33) can be added for remote signaling."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EF36-0KA0","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/3VA1125-5EF36-0KA0 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}}