{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1332-5EE32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1332-5EE32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VM1332-5EE32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1332-5EE32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, 3VM1332-5EE32-0AA0, 3-pole molded case circuit breaker, 320 A, 187 kA at 240 V, TM220 thermal-magnetic trip unit, IP40 front.","salesMarkdown":"It's designed for panel-mount installation in commercial and industrial distribution boards where you need high fault-current interruption — the kind of part you spec into a main or feeder breaker position and forget about until a fault happens. The interrupting ratings tell the story: 187 kA at 240 V AC, 121 kA at 415 V and 440 V, and 76 kA at 500 V. That's serious fault-current capacity for a 320 A frame — it'll clear a bolted fault upstream of a big transformer or a service entrance without the arc flash getting worse than what the label says. The 690 V AC rated operating voltage and 800 V rated insulation voltage mean it's built for 480/277 V and 600 V systems with plenty of headroom. ## Thermal derating — the real-world ampacity At 55 °C it drops to 313 A, at 60 °C to 306 A, at 65 °C to 299 A, and at 70 °C to 292 A. That's a gentle slope — about 1.4 % loss per 5 °C step above 50 °C — so you can run it in a warm enclosure without panic-derating the whole panel.","metaTitle":"Siemens 3VM1332-5EE32-0AA0 SENTRON MCCB, 320 A, 187 kA at 24","metaDescription":"Siemens 3VM1332-5EE32-0AA0 SENTRON molded case circuit breaker, 3-pole, 320 A, 187 kA at 240 V, TM220 trip unit. Current 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":"3 200 A","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"76 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":"Line protection","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"80 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":"TM220","Design Of Short-Circuit Protection":"For switching capacity values in DC power systems, see the 3VA Molded Case Circuit Breaker Manual; link available 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":"No","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"0","Switching Capacity Class Of The Circuit Breaker":"M","Mechanical Service Life (Operating Cycles) / Typical":"15 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front connection"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/86cbb92bc3ad6bdc48e958b7e3ce540a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569106&mlfb=3VM1332-5EE32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VM1332-5EE32-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the interrupting capacity of this MCCB at different voltages?","answer":"At 240 V AC it interrupts 187 kA; at 415 V and 440 V it's 121 kA; at 500 V it's 76 kA. These are symmetrical RMS ratings — use them for your SCCR coordination study at the service entrance or main distribution panel."},{"question":"How do I get current pricing and availability for 3VM1332-5EE32-0AA0?","answer":"Submit an RFQ through this listing. The part is sourced to order through independent distribution; availability and current pricing are confirmed at quote time, not published here."},{"question":"What's the thermal derating curve above 40 °C?","answer":"Full 320 A rating holds through 50 °C ambient. At 55 °C it's 313 A, at 60 °C it's 306 A, at 65 °C it's 299 A, and at 70 °C it's 292 A. That's a mild derating slope — about 1.4 % per 5 °C step — so you can run it in a warm enclosure without losing much capacity."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1332-5EE32-0AA0","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/3VM1332-5EE32-0AA0 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}}