{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-4EF32-0HC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-4EF32-0HC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-4EF32-0HC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4EF32-0HC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-4EF32-0HC0, Molded case circuit breaker, 3-pole, 25 A rated continuous current, 121 kA breaking capacity at 240 V, line protection version with TM240 overcurrent release and shunt trip.","salesMarkdown":"It's the line protection version, meaning its primary job is protecting cable and bus from overloads and short circuits in a distribution panel — not motor protection, not generator protection. The TM240 overcurrent release is a thermal-magnetic unit: the thermal element handles sustained overloads, the magnetic element clears high-current faults fast. This MCCB carries a 121 kA breaking capacity at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. For a 415 V industrial panel, 75.6 kA SCCR gives you headroom above most transformer-fed bus ratings — you're not riding the edge of coordination. Rated 25 A continuous at 40 °C, and it holds that rating flat through 50 °C. 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. ## Built-in accessories — what's on board Also includes a shunt trip (STL) — a voltage-triggered release that lets a remote signal (E-stop, fire alarm, undervoltage relay) trip the breaker electrically. The integrated auxiliary trip is order code 3VA9688-0BL30. The 15,000-cycle latching endurance (mechanical) is typical for this class — fine for distribution duty where it operates a few times a year, not for frequent switching.","metaTitle":"Siemens SENTRON 3VA1125-4EF32-0HC0 MCCB, 25 A, 3-Pole, 121 k","metaDescription":"Siemens SENTRON 3VA1125-4EF32-0HC0 molded case circuit breaker, 25 A rated continuous current, 3-pole, 121 kA breaking capacity at 240 V. Active production. Sourced to order agains","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":"No","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 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":"3VA9688-0BL30","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":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","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=236930&mlfb=3VA1125-4EF32-0HC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-4EF32-0HC0/alternatives.json"},"ai":{"faq":[{"question":"What is 3VA1125-4EF32-0HC0's listed depth?","answer":"The depth is 70 mm, with a width of 76.2 mm and height of 130 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-4EF32-0HC0","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/3VA1125-4EF32-0HC0 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}}