{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4EF36-0AG0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4EF36-0AG0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4EF36-0AG0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF36-0AG0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-4EF36-0AG0, 3-pole molded case circuit breaker, 125 A rated continuous current Iu, TM240 thermal-magnetic release, 121 kA breaking capacity at 240 V, 75.6 kA at 415 V, IP40 front protection.","salesMarkdown":"Breaking capacity is the headline here: 121 kA at 240 V AC, 75.6 kA at 415 V, and still 52.5 kA at 440 V. That puts it in the high-interrupting class for industrial feeders where fault current runs hot. At 690 V it still holds 11.9 kA, covering most 480V/600V panel applications without cascading upstream. ## Thermal derating and real-world fit Above that it steps down: 120 A at 55 °C, 117.5 A at 60 °C, 115 A at 65 °C, and 112.5 A at 70 °C. If you're packing this into a tight, hot cabinet with other heat sources, the 70 °C curve is the one to spec against. TM240 release adjustable; tr max. 1 second. Auxiliary contact version includes 1 auxiliary switch plus 1 trip alarm switch HP.","metaTitle":"Siemens SENTRON 3VA1112-4EF36-0AG0 MCCB, 125 A, 121 kA at 24","metaDescription":"Siemens SENTRON 3VA1112-4EF36-0AG0 molded case circuit breaker, 3-pole, 125 A rated, TM240 thermal-magnetic release, 121 kA breaking at 240 V. Current production. Quoted 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":"125 A","at 45 °C":"125 A","at 50 °C":"125 A","at 55 °C":"120 A","at 60 °C":"117.5 A","at 65 °C":"115 A","at 70 °C":"112.5 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":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"1 auxiliary switch + 1 trip alarm switch HP","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"125 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"without auxiliaryrelease","Ground fault monitoring version":"Without","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.":"125 A","Adjustable response value current / li max.":"1 250 A","Adjustable response value current / li min.":"625 A","Adjustable response value current / lr min.":"88 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":"3VA9988-0AB11","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":"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=240390&mlfb=3VA1112-4EF36-0AG0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF36-0AG0/alternatives.json"},"ai":{"faq":[{"question":"Will 3VA1112-4EF36-0AG0 drop into a panel specified for 3VA1112-5EF32-0CA0 without rewiring?","answer":"The physical dimensions are identical — same 76.2 mm width, 70 mm depth, and 130 mm height — so it mounts in the same cutout and busbar pattern. The auxiliary contact configuration differs (1 aux + 1 trip alarm vs the peer's arrangement), so verify the control wiring termination before swapping. No re-busing needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4EF36-0AG0","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/3VA1112-4EF36-0AG0 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}}