{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2450-6HK42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2450-6HK42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VA2450-6HK42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2450-6HK42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA2 series, molded case circuit breaker, 3VA2450-6HK42-0AA0, 500 A, 4-pole, ETU340 electronic trip unit, 242 kA at 240 V.","salesMarkdown":"## Siemens 3VA2450-6HK42-0AA0 — 500 A SENTRON MCCB with ETU340 Trip Unit This is a line-protection breaker, not a motor-protection device — the ETU340 provides LSIG (long-time, short-time, instantaneous, ground-fault) curves suited for feeder and main breaker duty in distribution panels. The interrupting capacity is 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 13 kA at 690 V. The electronic trip unit ETU340 supports adjustable N-conductor protection settings (OFF, 50%, 100%), which is relevant for 4-pole breakers in TN or TT systems where the neutral may need reduced or full protection. The breaker carries a maximum power loss of 99 W at rated current — a figure to factor into enclosure thermal calculations. ## Physical Integration and Environment The enclosure dimensions are 248 mm height, 184 mm width, and 110 mm depth. This is a standard SENTRON 3VA2 form factor — it mounts on a mounting plate or DIN rail via the appropriate adapter, and the 4-pole width occupies roughly 184 mm of panel width. The continuous current rating holds at 500 A up to 50 °C ambient; above that it derates to 495 A at 55 °C, 490 A at 60 °C, 485 A at 65 °C, and 480 A at 70 °C. The ETU340 trip unit supports adjustable short-time delay and I²t on/off, which enables zone-selective interlocking (ZSI) when paired with downstream breakers. This is the key feature for achieving full selectivity in a distribution hierarchy — without it, the instantaneous trip region would overlap with downstream devices. The 15,000-cycle mechanical endurance is typical for a fixed-mounted MCCB of this class. No communication function is built into this variant — it is a standalone breaker without integrated Modbus, PROFIBUS, or Ethernet. If remote monitoring or trip-event logging is required, a separate communication module or power-quality meter must be added upstream.","metaTitle":"Siemens 3VA2450-6HK42-0AA0 SENTRON MCCB, 500 A, 4-Pole, ETU3","metaDescription":"Siemens 3VA2450-6HK42-0AA0 SENTRON molded case circuit breaker, 500 A rated current, 4-pole, ETU340 electronic trip unit. Interrupting capacity 242 kA at 240 V. Current lifecycle s","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"110 mm","Width":"184 mm","Height":"248 mm","at 240 V":"242 kA","at 415 V":"187 kA","at 440 V":"187 kA","at 500 V":"121 kA","at 690 V":"13 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","Depth [in]":"4.3 in","Width [in]":"7.2 in","Height [in]":"9.8 in","Limited To 1 S":"6 kA","Number of poles":"4","Product version":"Line protection","lifecycle_stage":"current","Limited To 0.5 S":"6 kA","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Communication Function":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Power loss [W] / maximum":"99 W","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","Ground fault monitoring version":"Without","Design of the overcurrent release":"ETU340","Protection class IP / on the front":"IP40","Design of the N-conductor protection":"adjustable OFF; 50%; 100%","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"600","Adjustable response value time / tr min.":"600","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"500 A","Adjustable response value current / li max.":"7 000 A","Adjustable response value current / li min.":"7 000 A","Adjustable response value current / lr min.":"200 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"0","Protective function of the overcurrent release":"ELISA LI","Switching capacity class of the circuit breaker":"H","Max. rated operational current of the frame size":"500 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"35 x 10","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"20 x 1"}},"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=568780&mlfb=3VA2450-6HK42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA2450-6HK42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3VA2450-6HK42-0AA0 and get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current availability and pricing — stock levels and per-unit cost are confirmed at quote time."},{"question":"What is the interrupting capacity of 3VA2450-6HK42-0AA0 at 240 V?","answer":"The interrupting capacity is 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 13 kA at 690 V. The 242 kA figure at 240 V is among the highest available in a 500 A frame size."},{"question":"Does 3VA2450-6HK42-0AA0 have adjustable neutral protection?","answer":"Yes, the N-conductor protection is adjustable with settings for OFF, 50%, and 100% of the phase current. This is configured via the ETU340 trip unit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2450-6HK42-0AA0","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/3VA2450-6HK42-0AA0 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}}