{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EF36-0AG0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EF36-0AG0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EF36-0AG0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF36-0AG0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5EF36-0AG0, molded case circuit breaker, 3-pole, 25 A, line protection, TM240 release, 70 mm depth.","salesMarkdown":"The Siemens 3VA1125-5EF36-0AG0 is a SENTRON 3VA molded case circuit breaker (MCCB) rated for 25 A continuous current at 40 °C, 3-pole, configured for line protection with a TM240 thermal-magnetic release. It carries a 187 kA interrupting capacity at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V — numbers that tell you this breaker handles high-fault-current scenarios typical in distribution panels feeding motor control centers or transformer secondaries. The 25 A rating holds flat from 40 °C through 50 °C, then derates to 24 A at 55 °C and 22.5 A at 70 °C — a thermal curve worth checking if your panel ambient runs hot. Mounts on a DIN rail or panel-mount baseplate; the 76.2 mm width (3-pole standard) and 70 mm depth fit standard 3VA cubicle cutouts. The built-in trip indicator (red/green flag) gives a quick visual on tripped status without opening the door. ## Auxiliary contacts and ratings","metaTitle":"Siemens 3VA1125-5EF36-0AG0 SENTRON MCCB, 25 A, 3-Pole, Line","metaDescription":"Siemens 3VA1125-5EF36-0AG0 SENTRON MCCB. 25 A rated continuous current, 3-pole, line protection. 187 kA at 240 V. TM240 release. Active production. Sourced to order against RFQ.","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":"Yes","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":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"1 auxiliary switch + 1 trip alarm switch HP","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":"without auxiliaryrelease","Ground fault monitoring version":"Without","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":"3VA9988-0AB11","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=380635&mlfb=3VA1125-5EF36-0AG0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF36-0AG0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-5EF36-0AG0 and how is it quoted?","answer":"This part is sourced through our independent distribution network. Submit an RFQ for current availability and pricing — confirmed at quote time, no stock count or price listed here."},{"question":"What are the key interrupting ratings for 3VA1125-5EF36-0AG0?","answer":"187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. These are the maximum fault currents the breaker can safely interrupt at those voltages."},{"question":"What is the continuous current rating and thermal derating?","answer":"Rated 25 A continuous from 40 °C to 50 °C. Derates to 24 A at 55 °C, 23.5 A at 60 °C, 23 A at 65 °C, and 22.5 A at 70 °C. The TM240 release is fixed — no field adjustment."},{"question":"What compliance documentation is available for this MCCB?","answer":"As a Siemens SENTRON product, it carries the usual CE, UL, CSA, and IEC certifications for the 3VA family. Specific declaration files (RoHS, REACH) are available on request with the RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EF36-0AG0","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/3VA1125-5EF36-0AG0 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}}