{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EF36-0CH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EF36-0CH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EF36-0CH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF36-0CH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5EF36-0CH0, molded case circuit breaker, 3-pole, 25 A rated continuous current (Iu), line protection, TM240 overcurrent release, 187 kA breaking capacity at 240 V, undervoltage release, IP40 front.","salesMarkdown":"Its TM240 thermal-magnetic overcurrent release provides fixed protection against overload and short circuits. The part carries a 187 kA breaking capacity at 240 V, tapering to 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — these are the interrupting ratings that govern its placement in the fault-current hierarchy of a panel. At 240 V the 187 kA rating places this MCCB well above the typical utility fault-current range for North American 240/120 V split-phase services. At 415 V the 121 kA figure covers most industrial secondary-side transformer faults. Above that the thermal-magnetic trip begins to shift: 24 A at 55 °C, 23.5 A at 60 °C, 23 A at 65 °C, and 22.5 A at 70 °C. If the breaker is mounted in a sealed enclosure or next to heat-generating gear, size the load current against the derated value at the actual cabinet ambient. Dimensions are 70 mm deep, 76.2 mm wide, 130 mm high, fitting standard SENTRON 3VA panel footprints. The UVR is specified as design type 3VA9608-0BB24. The auxiliary contacts can be wired into a PLC input for remote status of the breaker position.","metaTitle":"Siemens 3VA1125-5EF36-0CH0 SENTRON MCCB, 25 A, 3-Pole, Line","metaDescription":"Siemens 3VA1125-5EF36-0CH0 SENTRON molded case circuit breaker, 25 A rated current, 3-pole, line protection, 187 kA at 240 V. Current lifecycle stage. Available to order.","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":"Yes","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":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB24","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=165065&mlfb=3VA1125-5EF36-0CH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF36-0CH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-5EF36-0CH0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings for 3VA1125-5EF36-0CH0?","answer":"Rated continuous current Iu is 25 A, with 3 poles, line protection, TM240 overcurrent release, and breaking capacities of 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V."},{"question":"What auxiliary contacts does this MCCB have?","answer":"It comes with 2 auxiliary switches plus 1 trip alarm switch (HQ configuration), and an undervoltage release (UVR) with design type 3VA9608-0BB24."},{"question":"What is the ambient temperature derating for this breaker?","answer":"The 25 A rating holds at 40 °C to 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."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EF36-0CH0","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/3VA1125-5EF36-0CH0 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}}