{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EF36-0JH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EF36-0JH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EF36-0JH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF36-0JH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5EF36-0JH0, molded case circuit breaker, 3-pole, line protection, 25 A rated, TM240 thermal-magnetic release, 187 kA breaking at 240 V, shunt trip, IP40 front.","salesMarkdown":"The TM240 release means the thermal element tracks load heating and the magnetic trip snaps at a fixed multiple of 25 A — no electronic adjustment, just reliable bimetal-and-solenoid action. That's the right call for a line-protection MCCB where you want predictable coordination with downstream breakers. ## Sizing and thermal derating — the real-world current 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. That's a shallow derating curve — you don't lose much headroom in a hot panel. Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that drops into most DIN-rail or panel-mount assemblies without re-drilling. Endurance rated at 15,000 mechanical operations — that's a solid number for a distribution breaker that sees occasional switching, not daily motor starts.","metaTitle":"Siemens 3VA1125-5EF36-0JH0 SENTRON MCCB, 25 A, 187 kA at 240","metaDescription":"Siemens SENTRON 3VA1125-5EF36-0JH0 molded case circuit breaker, 25 A rated, TM240 release, 187 kA breaking at 240 V. 3-pole, line protection, shunt trip. Current production. Source","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":"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":"2 auxiliary switches + 1 trip alarm switch 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":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL32","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":"3","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","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=294009&mlfb=3VA1125-5EF36-0JH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF36-0JH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-5EF36-0JH0 and get a price?","answer":"This MCCB is sourced to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of 3VA1125-5EF36-0JH0 at different voltages?","answer":"187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. That's high-fault rated — suitable for transformer secondaries and large UPS feeds."},{"question":"What auxiliary contacts does 3VA1125-5EF36-0JH0 include?","answer":"It comes with 2 auxiliary switches plus 1 trip alarm switch (HQ version), and a shunt trip (STL) release for remote tripping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EF36-0JH0","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/3VA1125-5EF36-0JH0 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}}