{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4EF32-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4EF32-0AB0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4EF32-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF32-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1112-4EF32-0AB0, molded case circuit breaker, line protection, 3-pole, TM240 thermal-magnetic release, rated 125 A at 40 °C, interrupting capacity 121 kA at 240 V.","salesMarkdown":"It's rated 125 A continuous at 40 °C — that's the full-load current it carries without tripping under normal conditions. The interrupting ratings climb from 121 kA at 240 V down to 11.9 kA at 690 V, so it's sized for high-fault commercial and industrial distribution panels where large upstream transformers or parallel feeds push available fault current above 100 kA. ## Real current capacity — the derating curve matters Above that, it derates: 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 at 60 °C, you're losing 5 A of headroom — factor that into the load schedule. The TM240 release is a thermal-magnetic trip unit with a 240 A frame; the adjustable thermal pickup lets you fine-tune the long-time delay for the connected load. The breaker measures 130 mm tall, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint.","metaTitle":"Siemens 3VA1112-4EF32-0AB0 SENTRON MCCB, 125 A, 3-Pole, TM24","metaDescription":"Siemens 3VA1112-4EF32-0AB0 SENTRON molded case circuit breaker, 125 A at 40 °C, 3-pole, TM240 release, 121 kA at 240 V. Currently active production. Sourced to order. Request a quo","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":"121 kA","at 415 V":"75.6 kA","at 440 V":"52.5 kA","at 500 V":"11.9 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":"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":"No","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":"3VA11124EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches HP","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","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":"3VA9988-0AA11","Switching Capacity Class Of The Circuit Breaker":"S","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=503493&mlfb=3VA1112-4EF32-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF32-0AB0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-4EF32-0AB0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote; availability and current pricing are confirmed at quote time."},{"question":"Will 3VA1112-4EF32-0AB0 drop into a panel that was specified around 3VA1110-5ED36-0AC0 without rewiring?","answer":"Yes — both breakers share the same 130 mm height, 76.2 mm width, and 70 mm depth, so the footprint, busbar spacing, and gland plate cutout are identical. No rewiring or panel modification is needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4EF32-0AB0","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/3VA1112-4EF32-0AB0 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}}