{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1180-5MH32-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1180-5MH32-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VM1180-5MH32-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1180-5MH32-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON series, molded case circuit breaker, 3VM1180-5MH32-0AA0, 3-pole, 80 A at 40 °C, TM120M overcurrent release, breaking capacity 187 kA at 240 V AC.","salesMarkdown":"The Siemens SENTRON 3VM1180-5MH32-0AA0 is a 3-pole molded case circuit breaker rated 80 A at 40 °C, fitted with a TM120M thermal-magnetic overcurrent release. Per the datasheet, the breaker holds its full 80 A rating from 40 °C through 50 °C, then derates linearly to 74 A at 70 °C — a curve that matters when the breaker shares an enclosure with other heat sources. Breaking capacity is 187 kA at 240 V AC, 121 kA at 415 V, 76 kA at 440 V, and 17 kA at 500 V; these are the values for coordination studies, not the continuous load. ## Thermal derating — what the 40–70 °C curve means for panel placement The 3VM1180-5MH32-0AA0 carries a published thermal derating table: 80 A continuous from 40 °C to 50 °C, 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. That 6 A drop between 50 °C and 70 °C is the margin you lose if this breaker sits above a VFD or in a tightly packed panel. The TM120M release is a fixed thermal-magnetic design — no interchangeable trip unit, so the derating curve is the only guide for ambient-adjusted loading. Maximum power loss is 14 W. ## Breaking capacity — selectivity headroom at common fault levels At 240 V the breaker interrupts 187 kA; at 415 V it handles 121 kA; at 440 V it drops to 76 kA; at 500 V it is 17 kA. These are the short-circuit current ratings (Icu) for the respective voltages. For a 480 V panel the relevant figure is the 440 V value (76 kA) or the 500 V value (17 kA) depending on the actual system voltage — the datasheet does not list a 480 V entry, so coordination studies should use the nearest bounding value. The lifecycle stage for the 3VM1180-5MH32-0AA0 is listed as current — the manufacturer has not flagged this order code for phase-out or end-of-life. No official successor order code has been published for this MPN.","metaTitle":"Siemens SENTRON 3VM1180-5MH32-0AA0 MCCB, 80A 3-Pole, 187kA a","metaDescription":"Siemens SENTRON 3VM1180-5MH32-0AA0 molded case circuit breaker, 80A rated at 40°C, 3-pole, TM120M release. Breaking capacity 187kA at 240V AC. Current lifecycle stage. Sourced to o","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"76 kA","at 500 V":"17 kA","at 40 °C":"80 A","at 45 °C":"80 A","at 50 °C":"80 A","at 55 °C":"78 A","at 60 °C":"77 A","at 65 °C":"75 A","at 70 °C":"74 A","Depth [In]":"2.76 in","Width [In]":"3 in","Height [In]":"5.12 in","Trip Indicator":"No","Number Of Poles":"3","Product version":"Startetptotection","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Communication Function":"No","Phase Failure Detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"14 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 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","operating voltage / at AC / rated value":"690 V","Max. rated operational voltage Ue with DC":"500 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":"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","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5 mm","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 1 mm"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b6b83f4d79e7ee56746fefe46987ce53.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=578324&mlfb=3VM1180-5MH32-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VM1180-5MH32-0AA0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1180-5MH32-0AA0","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/3VM1180-5MH32-0AA0 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}}