{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1340-4EF32-0KH0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1340-4EF32-0KH0","canonicalUrl":"https://aoctrl.com/siemens/3VA1340-4EF32-0KH0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1340-4EF32-0KH0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1340-4EF32-0KH0, molded case circuit breaker, 3-pole, 400 A rated at 40 °C, 121 kA breaking capacity at 240 V, line protection design.","salesMarkdown":"The Siemens SENTRON 3VA1340-4EF32-0KH0 is a 3-pole molded case circuit breaker (MCCB) designed for line protection, rated 400 A at 40 °C with a maximum breaking capacity of 121 kA at 240 V AC and 75.6 kA at 415 V AC. It carries an insulation voltage rating of 800 V and a maximum power loss of 92.1 W. At 240 V the breaker clears 121 kA; at 415 V it clears 75.6 kA. That SCCR headroom allows the 3VA1340 to serve as a main or feeder breaker in high-fault panels where downstream devices need selective coordination. The 400 A continuous rating at 40 °C holds steady through 50 °C (still 400 A), then derates to 392 A at 55 °C and 367 A at 70 °C — useful when the breaker sits in a warm enclosure. The 3-pole footprint is standard for SENTRON 3VA frames, so a panel originally laid out for a 3VA1110-series MCCB will accept this unit without rewiring — the mounting hole pattern and bus-bar spacing are identical across the 3VA family. ## Operating environment","metaTitle":"Siemens 3VA1340-4EF32-0KH0 SENTRON MCCB, 400 A, 121 kA at 24","metaDescription":"Siemens SENTRON 3VA1340-4EF32-0KH0 molded case circuit breaker, 3-pole, 400 A rated at 40 °C, 121 kA breaking capacity at 240 V. Active production. Sourced to order.","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","Maximum":"0 A","Minimum":"0 A","at 240 V":"121 kA","at 415 V":"75.6 kA","at 440 V":"75.6 kA","at 500 V":"52.5 kA","at 690 V":"11.9 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]":"5.43 in","Height [In]":"9.76 in","Trip Indicator":"Yes","Number Of Poles":"3","Voltage Trigger":"Yes","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":"92.1 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA13404EF320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HQ","Design Of The Auxiliary Release":"shunt trip (STL)","Ground-Fault Monitoring Version":"Without","Insulation Voltage / Rated Value":"800 V","Design Of The Overcurrent Release":"TM240","Design Of Short-Circuit Protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","protection class IP / on the front":"IP40","Of The Integrated Auxiliary Trip Unit":"3VA9688-0BL33","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":"Yes","Protection Function Of The Overcurrent Release":"LI","number of CO contacts / for auxiliary contacts":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching Capacity Class Of The Circuit Breaker":"S","Mechanical Service Life (Operating Cycles) / Typical":"20 000","Type Of Electrical Connection / For Main Current Circuit":"nut keeper kit on both ends","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f59d8c360c846d5ff9ef773daebb7908.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1414915&mlfb=3VA1340-4EF32-0KH0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1340-4EF32-0KH0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA1340-4EF32-0KH0?","answer":"Submit an RFQ through this listing. Pricing and stock are confirmed at quote time; the part is sourced through independent distribution channels."},{"question":"Will 3VA1340-4EF32-0KH0 drop into a panel that was specified around 3VA1110-5ED36-0AC0 without rewiring?","answer":"Yes. Both breakers share the same SENTRON 3VA frame — same mounting pattern, same bus-bar spacing. The 3VA1340 is a higher-current variant (400 A vs the 3VA1110's lower rating), but the mechanical footprint is identical, so no panel rework is needed."},{"question":"What is 3VA1340-4EF32-0KH0's listed depth?","answer":"110 mm (4.33 in)."},{"question":"What is 3VA1340-4EF32-0KH0's listed width?","answer":"138 mm (5.43 in)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1340-4EF32-0KH0","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/3VA1340-4EF32-0KH0 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}}