{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EF32-0BA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EF32-0BA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EF32-0BA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF32-0BA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5EF32-0BA0, molded case circuit breaker, 3-pole, 25 A rated continuous current, TM240 overcurrent release, 187 kA breaking capacity at 240 V.","salesMarkdown":"It carries a rated insulation voltage of 800 V and delivers interrupting capacity that scales with system voltage: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. Above that, the breaker derates gradually: 24 A at 55 °C, 23.5 A at 60 °C, 23 A at 65 °C, and 22.5 A at 70 °C. ## Undervoltage release and auxiliary options It does not include auxiliary contacts or a voltage trigger. The integrated auxiliary trip is specified as order code 3VA9608-0BB11, which is the companion shunt trip or UVR module that mates to the breaker. No communication function, phase failure detection, or ground fault monitoring is built in; those are separate variants in the 3VA family. ## Mechanical endurance and physical fit Rated for 15,000 latching operations. The breaker measures 130 mm high, 76.2 mm wide (3-inch standard), and 70 mm deep. The DIN EN 81346-2 reference code is Q, consistent with switchgear function. Panel builders should account for the 70 mm depth when routing busbars or cables behind the breaker. This is an active, in-production Siemens SENTRON 3VA line-protection MCCB.","metaTitle":"Siemens 3VA1125-5EF32-0BA0 SENTRON MCCB, 25 A, 3-Pole","metaDescription":"Siemens SENTRON 3VA1125-5EF32-0BA0 molded case circuit breaker, 25 A rated continuous current, 3-pole, TM240 release, 187 kA at 240 V. 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":"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":"Yes","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"Without","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":"3VA9608-0BB11","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":"0","Protective function of the overcurrent release":"LI","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=265790&mlfb=3VA1125-5EF32-0BA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF32-0BA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1125-5EF32-0BA0?","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 position."},{"question":"What is the breaking capacity of 3VA1125-5EF32-0BA0 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. The interrupting rating drops as system voltage rises, which is typical for MCCBs."},{"question":"What does the TM240 release designation mean?","answer":"TM240 indicates a thermal-magnetic overcurrent release with a 240 A frame rating. The breaker itself is rated for 25 A continuous current, so the TM240 frame provides headroom for the thermal element to coordinate with downstream devices."},{"question":"Does 3VA1125-5EF32-0BA0 include an undervoltage release?","answer":"Yes, it ships with an integrated undervoltage release (UVR) as the auxiliary release. No auxiliary contacts, voltage trigger, or communication functions are included on this variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EF32-0BA0","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/3VA1125-5EF32-0BA0 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}}