{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1112-6MH36-0DA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1112-6MH36-0DA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1112-6MH36-0DA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1112-6MH36-0DA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 3VA1 IEC frame 160 MCCB, 3-pole, breaking capacity class H Icu=70kA @ 415V, starter protection TM120M, In=125A, adjustable short-circuit release Ii=5...15 x In, undervoltage release 208-230V AC 50/60Hz, clamp connection.","salesMarkdown":"## What the 70 kA breaking capacity means on site The 3VA1112-6MH36-0DA0 is a 3VA1 IEC frame 160 MCCB with class H breaking capacity — Icu=70kA at 415V AC. On a 415V panel with a transformer large enough to push 70 kA into a bolted fault, this breaker clears it before the arc flash escalates. Short-circuit coordination upstream stays intact because the breaker's let-through energy stays within the upstream device's withstand curve. This is a 3-pole unit, rated In=125A continuous. The TM120M thermal-magnetic trip gives motor-start protection: the thermal element tracks overload heating, and the magnetic element handles short circuits. Note the description says 'without overload protection' — that means the thermal element is sized for motor starting duty, not for protecting the cable. The overload relay in the starter handles running overcurrent; this breaker provides short-circuit backup and isolation. ## Undervoltage release and adjustable short-circuit pickup The built-in undervoltage release (UVR) trips the breaker when supply voltage drops below the dropout threshold, nominal 208-230V AC 50/60Hz. This is common on motor branch circuits where you want the starter to drop out on brownout and not reclose automatically when power returns. It's not a shunt trip — the UVR holds the mechanism closed only when coil voltage is present, so a loss of control power opens the breaker mechanically. The short-circuit release Ii is adjustable from 5 to 15 times In (625A to 1875A at 125A In). That range lets you coordinate with downstream motor starters and contactors: set it low enough to clear a bolted fault fast, high enough to ride through motor inrush without nuisance trips. Clamp terminals accept copper or aluminium conductors up to the frame's rated cross-section — no lug kit needed for most panel builds.","metaTitle":"Siemens 3VA1112-6MH36-0DA0 Circuit Breaker 125A 70kA, UVR","metaDescription":"Siemens 3VA1112-6MH36-0DA0 IEC frame 160 MCCB, 3-pole, 125A, Icu=70kA @ 415V. Starter protection TM120M with undervoltage release 208-230V AC. Lifecycle current, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"lifecycle_stage":"current"}},"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=146610&mlfb=3VA1112-6MH36-0DA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1112-6MH36-0DA0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of this MCCB?","answer":"Icu=70kA at 415V AC, class H per IEC 60947-2. That's the ultimate short-circuit breaking capacity — the breaker can safely clear a fault up to 70kA once. For repeated fault clearance, Ics is typically 50% of Icu on this frame, but for a single fault event the 70kA rating is the number that governs arc-flash boundary and selectivity coordination."},{"question":"Where can I buy 3VA1112-6MH36-0DA0 and how is it quoted?","answer":"This part is sourced to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time for your quantity. No minimum order quantity is enforced on standard requests."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1112-6MH36-0DA0","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/3VA1112-6MH36-0DA0 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}}