{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-5EF32-0HC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-5EF32-0HC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-5EF32-0HC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5EF32-0HC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-5EF32-0HC0, molded case circuit breaker, 3-pole, 125 A (40 °C), 187 kA at 240 V, line protection, with shunt trip (STL) and 2 HQ auxiliary switches.","salesMarkdown":"## Line protection MCCB with shunt trip and auxiliary switches ## Interrupting ratings across voltage bands This MCCB delivers 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. The steep drop above 440 V is typical of a high-breaking-capacity frame — at 690 V the 17 kA still covers most industrial motor branch circuits, but for a 690 V main you would want to verify the downstream coordination study. ## Current derating with ambient temperature The breaker holds 125 A continuously from 40 °C up to 50 °C, then derates to 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, and 114 A at 70 °C. If the panel ambient runs above 50 °C — common in a non-ventilated enclosure near a furnace or kiln — the 114 A floor at 70 °C still leaves margin for a 100 A continuous load, but a 125 A load would need the next frame up or forced ventilation. The shunt trip coil and auxiliary switches are pre-wired to terminal blocks; no additional wiring of internal accessories is needed.","metaTitle":"Siemens 3VA1112-5EF32-0HC0 MCCB, 125 A, 3-Pole, 187 kA at 24","metaDescription":"Siemens SENTRON 3VA1112-5EF32-0HC0 molded case circuit breaker, 125 A, 3-pole, 187 kA interrupting at 240 V. Active production. Available to order. 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","Maximum":"0 A","Minimum":"0 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"75.6 kA","at 500 V":"17 kA","at 690 V":"17 kA","at 40 °C":"125 A","at 45 °C":"125 A","at 50 °C":"125 A","at 55 °C":"122 A","at 60 °C":"120 A","at 65 °C":"117 A","at 70 °C":"114 A","Depth [In]":"2.76 in","Width [In]":"3 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"3","Voltage Trigger":"Yes","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"28.1 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA11125EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HQ","Design Of The Auxiliary Release":"shunt trip (STL)","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","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","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL30","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","operating voltage / at DC / rated value":"500 V","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"2","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"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=43010&mlfb=3VA1112-5EF32-0HC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-5EF32-0HC0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-5EF32-0HC0?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will 3VA1112-5EF32-0HC0 drop into a panel that was specified around 3VA1112-5EE32-0AA0 without rewiring?","answer":"Both are 3-pole SENTRON MCCBs with the same frame dimensions (130 mm height, 76.2 mm width, 70 mm depth) and the same 125 A rating at 40 °C. The -0HC0 variant adds a shunt trip and two HQ auxiliary switches, so the physical fit and bus connections are identical — no rewiring of the main power path is needed. The additional control wiring for the shunt trip and aux switches would need to be run if the original panel did not already provide it."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-5EF32-0HC0","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/3VA1112-5EF32-0HC0 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}}