{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-4EF36-0HH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-4EF36-0HH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-4EF36-0HH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF36-0HH0","rawCanonicalId":null},"summary":{"shortDescription":"SENTRON 3VA1112-4EF36-0HH0, 3-pole molded case circuit breaker, 125 A at 40 °C, 121 kA breaking at 240 V, line protection design with shunt trip and auxiliary switches.","salesMarkdown":"The SENTRON 3VA1112-4EF36-0HH0 is a 3-pole molded case circuit breaker rated 125 A at 40 °C, with a breaking capacity of 121 kA at 240 V and 75.6 kA at 415 V. The current derating curve is published from 40 °C through 70 °C: holds 125 A up to 50 °C, then drops to 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, and 114 A at 70 °C. If your enclosure runs hot, that derating table is the one you size against — the 125 A nameplate number only applies below 50 °C. Width is 76.2 mm (3 in), depth 70 mm (2.76 in), height 130 mm (5.12 in). That 76.2 mm width is a standard 3-module DIN-rail footprint — it clips onto the rail and occupies three 25.4 mm slots. Maximum power loss is 28.1 W. In a sealed enclosure, that heat needs to be factored into the thermal budget — especially if the breaker is running near its 125 A limit in a high-ambient panel. The basic switch supplied inside this breaker is 3VA11124EF360AA0 — that's the internal mechanism. If you're doing a warranty swap or a field repair on the switch core, that's the sub-part number to reference. Breaking capacities at other voltages: 52.5 kA at 440 V, 11.9 kA at 500 V, and 11.9 kA at 690 V. The drop above 440 V is steep — at 500 V and 690 V it's the same 11.9 kA, which tells you the internal arc-quenching design hits its limit above 440 V. If your system fault current at 480 V exceeds 11.9 kA, this breaker is not the right pick for that bus.","metaTitle":"SENTRON 3VA1112-4EF36-0HH0 Molded Case Circuit Breaker, 125","metaDescription":"SENTRON 3VA1112-4EF36-0HH0 3-pole molded case circuit breaker, 125 A rated at 40°C, 121 kA breaking at 240 V. Current lifecycle, sourced to order. Line protection with shunt trip a","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":"Yes","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":"3VA11124EF360AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch 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":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"S","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"box terminal on both sides","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=287925&mlfb=3VA1112-4EF36-0HH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-4EF36-0HH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA1112-4EF36-0HH0 and what is the lead time?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm commitment."},{"question":"What is the width and depth of 3VA1112-4EF36-0HH0?","answer":"Width is 76.2 mm (3 in) — a standard 3-module DIN-rail footprint. Depth is 70 mm (2.76 in). Height is 130 mm (5.12 in)."},{"question":"Will 3VA1112-4EF36-0HH0 drop into a panel specified around 3VA1020-2ED32-0DD0?","answer":"Both are SENTRON 3-pole MCCBs on the same DIN-rail footprint, so the mechanical fit is the same. However, the 3VA1112-4EF36-0HH0 is rated 125 A versus the lower rating of the 3VA1020-2ED32-0DD0, and the breaking capacities differ. Check your load current and fault level before swapping — the wiring and bus bar sizing may need to be upsized."},{"question":"What compliance documentation does SENTRON provide for 3VA1112-4EF36-0HH0?","answer":"As a current-production SENTRON MCCB, it carries CE, UL, and CSA certifications per standard Siemens documentation. RoHS and REACH declarations are available through the manufacturer's compliance portal. Request the specific declaration of conformity and UL file number at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-4EF36-0HH0","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/3VA1112-4EF36-0HH0 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}}