{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1332-7MH32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1332-7MH32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA1332-7MH32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1332-7MH32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1332-7MH32-0AA0, 3-pole molded case circuit breaker, 320 A, TM120M overcurrent release, breaking capacity 440 kA at 240 V AC.","salesMarkdown":"The Siemens SENTRON 3VA1332-7MH32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 320 A continuous current, with a TM120M thermal-magnetic overcurrent release. It's designed for starter protection — meaning it handles motor inrush without nuisance tripping while still clearing faults fast. The 440 kA breaking capacity at 240 V AC means it can interrupt high-fault currents upstream of a motor branch, so you don't cascade the trip to the main breaker. At 415 V it still holds 242 kA, and at 690 V it's rated 17 kA — the SCCR headroom is substantial for most industrial panels. ## Thermal derating and panel fit The breaker holds its full 320 A rating up to 50 °C ambient. Above that it derates linearly: 313 A at 55 °C, 306 A at 60 °C, 299 A at 65 °C, and 292 A at 70 °C. If your panel runs hot — say near a VFD bank or in a sealed enclosure — factor that derating into the load schedule. The dimensions are 248 mm high, 138 mm wide, 110 mm deep, so it fits standard MCCB panel cutouts. Front IP40 protection keeps dust out of the enclosure face.","metaTitle":"Siemens 3VA1332-7MH32-0AA0 SENTRON MCCB, 320 A, 3-Pole","metaDescription":"Siemens SENTRON 3VA1332-7MH32-0AA0 molded case circuit breaker, 320 A, 3-pole, TM120M release, 440 kA at 240 V. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"138 mm","Height":"248 mm","Maximum":"320 A","Minimum":"320 A","at 240 V":"440 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 500 V":"154 kA","at 690 V":"17 kA","at 40 °C":"320 A","at 45 °C":"320 A","at 50 °C":"320 A","at 55 °C":"313 A","at 60 °C":"306 A","at 65 °C":"299 A","at 70 °C":"292 A","Depth [In]":"4.33 in","Width [In]":"5.43 in","Height [In]":"9.76 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":"Starter protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"80.1 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM120M","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","reference code / according to IEC 81346-2":"Q","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"I","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"C","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":"https://cdn.aoctrl.com/28d1f50e704dceb7479f2874fcda01ab.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1093767&mlfb=3VA1332-7MH32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1332-7MH32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is 3VA1332-7MH32-0AA0's listed depth?","answer":"The listed depth is 110 mm (4.33 in)."},{"question":"What is 3VA1332-7MH32-0AA0's listed width?","answer":"The listed width is 138 mm (5.43 in)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1332-7MH32-0AA0","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/3VA1332-7MH32-0AA0 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}}