{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-5EF32-0CH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-5EF32-0CH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-5EF32-0CH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF32-0CH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-5EF32-0CH0, 3-pole molded case circuit breaker, 25 A rated continuous current, TM240 thermal-magnetic release, 187 kA interrupting capacity at 240 V.","salesMarkdown":"## What this 3-pole MCCB carries — the ratings that decide fit Its headline interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V — the 240 V figure is the one that governs fault-clearing duty on low-voltage mains, while the 690 V rating confirms it handles industrial 600 V class systems where available fault current stays under 17 kA. Rated continuous current Iu is 25 A, flat from 40 °C to 50 °C, then derated stepwise: 24 A at 55 °C, 23.5 A at 60 °C, 23 A at 65 °C, 22.5 A at 70 °C. That thermal curve means an enclosure at 50 °C ambient still carries the full 25 A; push past 55 °C and you lose about 1 A per 5 °C rise. That tells you this is a straight line-protection breaker for fixed loads, not a variable-trip feeder. The 3VA1125-5EF32-0CH0 measures 130 mm high, 76.2 mm wide, 70 mm deep. That 76.2 mm width is a standard 3-pole MCCB footprint — three module-widths at roughly 25.4 mm per pole. It mounts to a DIN rail or direct-panel screw pattern typical of the SENTRON 3VA platform. Verify the screw-terminal torque spec from the device manual before torquing to busbar or cable lugs. ## Traceability and documentation The auxiliary trip module specified for this unit is 3VA9608-0BB24 — that is the factory-matched undervoltage release module. The device manual (linked from Siemens Service & Support) covers DC network application notes if you are switching power values in DC circuits. For compliance documentation, Siemens provides RoHS and REACH declarations for the SENTRON 3VA series; UL and IEC listings are standard for MCCBs of this class — verify the specific UL file number against the nameplate on arrival.","metaTitle":"Siemens 3VA1125-5EF32-0CH0 SENTRON MCCB, 25 A, 187 kA at 240","metaDescription":"Siemens 3VA1125-5EF32-0CH0 SENTRON molded case circuit breaker. 3-pole, 25 A rated at 40 °C, TM240 release, 187 kA at 240 V. Current production. Quoted on request.","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":"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=475390&mlfb=3VA1125-5EF32-0CH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-5EF32-0CH0/alternatives.json"},"ai":{"faq":[{"question":"What are the interrupting ratings for this MCCB?","answer":"187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. The 240 V rating governs most low-voltage mains applications."},{"question":"Where can I buy the 3VA1125-5EF32-0CH0?","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 is the depth of the 3VA1125-5EF32-0CH0?","answer":"The depth is 70 mm, which clears a standard 200 mm deep enclosure without crowding the gland plate or busbar shroud."},{"question":"Will this breaker drop into a panel designed for the 3VA1112-5EF32-0CA0?","answer":"The 3VA1125-5EF32-0CH0 and the 3VA1112-5EF32-0CA0 share the same SENTRON 3VA platform and 3-pole footprint, so physical mounting is identical. Verify the continuous current rating and interrupting capacity match your application before substitution."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-5EF32-0CH0","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/3VA1125-5EF32-0CH0 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}}