{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2450-7MN32-0BH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2450-7MN32-0BH0","canonicalUrl":"https://aoctrl.com/siemens/3VA2450-7MN32-0BH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2450-7MN32-0BH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2450-7MN32-0BH0, molded case circuit breaker, 3-pole, 500 A, ETU350M electronic trip unit, motor protection version, 330 kA at 240 V.","salesMarkdown":"That 500 A holds flat through 50 °C — only starts to derate at 55 °C (495 A) and drops to 480 A by 70 °C, so it handles warm enclosures without a big margin hit. The interrupting ratings tell you where it clears faults: 330 kA at 240 V, 242 kA at 415 V and 440 V, and 52.5 kA at 690 V. It ships with an ETU350M electronic trip unit — that's the overcurrent release that gives you adjustable long-time, short-time, instantaneous, and ground-fault protection curves. The motor protection version means the trip unit is pre-configured for motor starting inrush and thermal memory, so it won't nuisance trip on a cold start. The UVR drops the breaker on loss of control voltage — standard for safety circuits where you need a guaranteed disconnect if the control supply fails. No ground-fault monitoring module is fitted, and there's no communication function onboard. ## Panel integration and environment Maximum power dissipation is 101.5 W — that's the heat you need to vent from the enclosure at full rated current. In a sealed panel with multiple breakers side by side, that heat adds up; plan for forced ventilation or a larger cabinet if you're running near 500 A continuously.","metaTitle":"Siemens 3VA2450-7MN32-0BH0 MCCB, 500 A, 3-Pole, ETU350M","metaDescription":"Siemens SENTRON 3VA2450-7MN32-0BH0 molded case circuit breaker, 500 A rated, 3-pole, ETU350M release, 330 kA at 240 V. Motor protection version with undervoltage release. Quoted to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"138 mm","Height":"248 mm","at 240 V":"330 kA","at 415 V":"242 kA","at 440 V":"242 kA","at 690 V":"52.5 kA","at 40 °C":"500 A","at 45 °C":"500 A","at 50 °C":"500 A","at 55 °C":"495 A","at 60 °C":"490 A","at 65 °C":"485 A","at 70 °C":"480 A","Trip indicator":"Yes","Number of poles":"3","Product version":"Motor protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"Yes","Communication Function":"No","Phase failure detection":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"101.5 W","Auxiliary contact version":"2 auxiliary switches + 1 trip alarm switch HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"500 A","Rated insulation voltage Ui":"800 V","Of The Supplied Basic Switch":"3VA2450-7MN32-0AA0","Design of the auxiliary release":"Undervoltage release (UVR)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9608-0BB11","Design of the overcurrent release":"ETU350M","Protection class IP / on the front":"IP40","Operating power / at AC-3 / at 400 V":"200 W","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"15","Adjustable response value time / tr min.":"4","Adjustable response value time / tsd max.":"0.03 s","Adjustable response value time / tsd min.":"0.03 s","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"500 A","Adjustable response value current / li max.":"7 500 A","Adjustable response value current / li min.":"7 500 A","Adjustable response value current / lr min.":"200 A","Adjustable response value current / Isd max.":"7 500 A","Adjustable response value current / Isd min.":"1 500 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"3","Protective function of the overcurrent release":"LSI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching capacity class of the circuit breaker":"C","Max. rated operational current of the frame size":"630 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"Lug terminal","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=570151&mlfb=3VA2450-7MN32-0BH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2450-7MN32-0BH0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy the 3VA2450-7MN32-0BH0 and get a price?","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 quote."},{"question":"What are the key interrupting ratings for this MCCB?","answer":"It interrupts 330 kA at 240 V, 242 kA at 415 V and 440 V, and 52.5 kA at 690 V. Those ratings cover high-fault applications like transformer secondaries and large busways."},{"question":"Does this breaker include phase failure protection?","answer":"Yes, phase failure detection is built into the ETU350M trip unit. It will trip on a lost phase, protecting motors from single-phasing damage."},{"question":"What auxiliary contacts are fitted?","answer":"It comes with 2 auxiliary switches plus 1 trip alarm switch in the HQ configuration, and an integrated undervoltage release."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2450-7MN32-0BH0","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/3VA2450-7MN32-0BH0 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}}