{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-4EF32-0CH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-4EF32-0CH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-4EF32-0CH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4EF32-0CH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-4EF32-0CH0, 3-pole molded case circuit breaker, 25 A rated continuous current, TM240 thermal-magnetic release, 121 kA breaking capacity at 240 V, 70 mm depth.","salesMarkdown":"Its 25 A rated continuous current (Iu) holds flat from 40 °C to 50 °C, then derates gradually to 22.5 A at 70 °C — so in a warm enclosure the breaker still carries the full 25 A up to 50 °C, which covers most North American and European panel ambient conditions without a derate step. Breaking capacity is the headline number for this class: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. At 415 V — common in European industrial panels — 75.6 kA SCCR means it sits comfortably downstream of a transformer or main breaker with a high available fault current. The 690 V rating (11.9 kA) is lower but still covers most motor-circuit fault levels at that voltage. ## Panel integration and deployment The undervoltage release coil needs a control voltage; verify polarity and suppression per the panel wiring diagram before energizing.","metaTitle":"Siemens 3VA1125-4EF32-0CH0 SENTRON MCCB, 25 A, 121 kA at 240","metaDescription":"Siemens SENTRON 3VA1125-4EF32-0CH0 molded case circuit breaker, 3-pole, 25 A, TM240 release, 121 kA at 240 V. Current lifecycle. 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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 690 V":"11.9 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":"S","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=121161&mlfb=3VA1125-4EF32-0CH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4EF32-0CH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-4EF32-0CH0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ to confirm current availability and pricing at quote time."},{"question":"What is 3VA1125-4EF32-0CH0's listed depth on this component line?","answer":"The listed depth is 70 mm."},{"question":"What is 3VA1125-4EF32-0CH0's listed width on this component line?","answer":"The listed width is 76.2 mm."},{"question":"What compliance documentation does this brand provide for 3VA1125-4EF32-0CH0?","answer":"As a Siemens SENTRON MCCB, it carries the standard CE, UL, and IEC certifications for the 3VA family. RoHS and REACH declarations are available from Siemens documentation. Specific cert numbers are not listed in this evidence set."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-4EF32-0CH0","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/3VA1125-4EF32-0CH0 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}}