{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VM1340-4GD42-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VM1340-4GD42-0AA0","canonicalUrl":"https://aoctrl.com/siemens/3VM1340-4GD42-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3VM1340-4GD42-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VM1340-4GD42-0AA0, molded case circuit breaker, 4-pole, 400 A (40 °C), TM210 release, line protection, 110 x 184 x 248 mm.","salesMarkdown":"The Siemens SENTRON 3VM1340-4GD42-0AA0 is a 4-pole molded case circuit breaker rated 400 A at 40 °C, with a TM210 thermal-magnetic overcurrent release designed for line protection. It breaks up to 121 kA at 240 V and 76 kA at 415/440 V, so it handles high-fault utility feeds or large transformer secondaries without cascading upstream. ## Current ratings and thermal behavior Rated 400 A continuous from 40 °C through 50 °C ambient, then derates to 392 A at 55 °C, 384 A at 60 °C, 376 A at 65 °C, and 367 A at 70 °C (–). Listed as current production. No phase-out or last-time-buy notice on this order code. Measures 110 mm deep, 184 mm wide, 248 mm tall (–). The 4-pole body at 184 mm width is standard for this frame size — verify the existing busbar or lug kit spacing if retrofitting into a panel cut for a narrower 3-pole breaker.","metaTitle":"Siemens 3VM1340-4GD42-0AA0 SENTRON MCCB, 400 A, 4-Pole","metaDescription":"Siemens SENTRON 3VM1340-4GD42-0AA0 molded case circuit breaker, 400 A rated at 40 °C, 4-pole, 121 kA at 240 V. Current production. Quoted 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":"184 mm","Height":"248 mm","Maximum":"4 000 A","at 240 V":"121 kA","at 415 V":"76 kA","at 440 V":"76 kA","at 500 V":"53 kA","at 40 °C":"400 A","at 45 °C":"400 A","at 50 °C":"400 A","at 55 °C":"392 A","at 60 °C":"384 A","at 65 °C":"376 A","at 70 °C":"367 A","Depth [In]":"4.33 in","Width [In]":"7.24 in","Height [In]":"9.76 in","Trip Indicator":"No","Number Of Poles":"4","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":"92 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":"TM210","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","design of the N-conductor protection":"100%","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":"S","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/81bc365102c563584c96036bbf71977e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569117&mlfb=3VM1340-4GD42-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VM1340-4GD42-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for 3VM1340-4GD42-0AA0?","answer":"400 A continuous at 40 °C, 4-pole, breaking capacity 121 kA at 240 V AC and 76 kA at 415/440 V AC. TM210 thermal-magnetic release. Rated insulation voltage 800 V."},{"question":"How do I get current pricing and availability for 3VM1340-4GD42-0AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ for current pricing and availability confirmation."},{"question":"What is 3VM1340-4GD42-0AA0's depth?","answer":"The depth is 110 mm (4.33 in)."},{"question":"What is 3VM1340-4GD42-0AA0's width?","answer":"The width is 184 mm (7.24 in)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VM1340-4GD42-0AA0","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/3VM1340-4GD42-0AA0 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}}