{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EF32-0AE0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EF32-0AE0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EF32-0AE0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF32-0AE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5EF32-0AE0, 3-pole molded case circuit breaker, 25 A rated current, TM240 thermal-magnetic release, breaking capacity 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, 17 kA at 690 V.","salesMarkdown":"The Siemens SENTRON 3VA1125-5EF32-0AE0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a 25 A continuous current at 40 °C and a TM240 thermal-magnetic overcurrent release. Its interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V — numbers that tell you it handles high-fault utility feeds and large transformer secondaries without cascading upstream. ## Breaking capacity and current derating At 415 V it still clears 121 kA; at 440 V it drops to 75.6 kA; at 690 V it's 17 kA. The 25 A rating holds flat from 40 °C through 50 °C, then 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 — so in a hot enclosure or near other heat sources, plan the load at the derated value, not the nameplate. The 3VA frame measures 76.2 mm wide, 130 mm tall, and 70 mm deep. The 4 auxiliary switches (HQ type) ride on the side, adding about one module width. Plan the enclosure depth to clear the 70 mm body plus wiring space behind the line/load lugs. ## Release and accessory configuration The auxiliary contact version ships with 4 HQ (high-utilization) switches. If your application needs a shunt trip, UVR, or communication, this variant does not carry them; you'd step to a different suffix in the 3VA family. The trip indicator is absent, so there's no local mechanical flag showing the breaker tripped on fault.","metaTitle":"Siemens 3VA1125-5EF32-0AE0 SENTRON MCCB, 25 A, 187 kA at 240","metaDescription":"Siemens SENTRON 3VA1125-5EF32-0AE0 molded case circuit breaker. 3-pole, 25 A, TM240 release. Breaking capacity 187 kA at 240 V. Current lifecycle stage. Sourced to order against RF","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":"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":"4 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":"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":"4","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","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":"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=246182&mlfb=3VA1125-5EF32-0AE0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF32-0AE0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-5EF32-0AE0 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote."},{"question":"What are the key ratings for 3VA1125-5EF32-0AE0?","answer":"It is a 3-pole MCCB rated 25 A continuous at 40 °C (derated to 22.5 A at 70 °C), with breaking capacity of 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. The TM240 release is fixed thermal-magnetic. Rated insulation voltage is 800 V."},{"question":"What is the depth of 3VA1125-5EF32-0AE0?","answer":"The depth is 70 mm."},{"question":"What is the width of 3VA1125-5EF32-0AE0?","answer":"The width is 76.2 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EF32-0AE0","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/3VA1125-5EF32-0AE0 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}}