{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7407-0KR00-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7407-0KR00-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7407-0KR00-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7407-0KR00-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-400, PS407 power supply, 10A, UC 120/230V, 5V DC/10A for redundant use, 2 slots, 50x290x217 mm.","salesMarkdown":"## PS407 power supply for S7-400 racks The Siemens 6ES7407-0KR00-0AA0 is a PS407 power supply for the SIMATIC S7-400 system, delivering 10 A at 5 V DC to the backplane bus from a universal input accepting 120/230 V AC or 110/230 V DC. It occupies 2 slots in the rack and is explicitly designed for redundant configurations, meaning two units can share the load or back each other up without conflict on the backplane. The 5 V DC rail can supply up to 10 A, but requires a 200 mA base load to stay in regulation — a detail that matters during commissioning when the rack is partially populated. The 24 V DC rail provides up to 1 A and is idling-proof, so it won't drop out under light load. ## Input flexibility and ride-through Input range covers 120/230 V AC (47–63 Hz) and 110/230 V DC, with inrush current limited to 18 A (15x rated input current). On a mains failure, the unit holds up the output for 20 ms — enough to trigger a controlled shutdown or switch to the redundant partner. NAMUR buffering is supported for process-industry installations that require defined behavior on voltage dips. Power loss is 22.4 W typical, with active power input of 97.5 W typical at full load. That heat has to go somewhere — the 290 mm height and 217 mm depth provide enough surface area for convection cooling in a standard S7-400 rack, but clearance above and below the rack matters for airflow. FM approval is present, rated T4 up to 40 °C ambient — relevant for installations in hazardous locations where the power supply sits outside the classified area but must not be an ignition source. Equipment protection class I with protective conductor connection is standard. The backup battery option uses 2x lithium AA cells at 3.6 V / 1.9 Ah to retain the real-time clock and RAM contents during a power-down.","metaTitle":"Siemens 6ES7407-0KR00-0AA0 PS407 Power Supply, 10A, 120/230V","metaDescription":"Siemens SIMATIC S7-400 PS407 power supply, 10A output at 5V DC, UC 120/230V AC/DC input. Mature lifecycle, FM approved, 2-slot module. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Power Supplies"],"specifications":{"Depth":"217 mm","Width":"50 mm","5 V DC":"Yes","Height":"290 mm","24 V DC":"Yes","120 V AC":"Yes","120 V DC":"Yes","230 V AC":"Yes","230 V DC":"Yes","FM approval":"Yes; up to 40 °C: T4","Required Slots":"2","Weight, approx.":"1 360 g","lifecycle_stage":"mature","Power loss, typ.":"22.4 W","Primary/Secondary":"Yes","Rated value 50 Hz":"Yes","Rated value 60 Hz":"Yes","Inrush current, max.":"18 A; 15x rated value input current","Rated value at 110 V DC":"1.2 A","Rated value at 120 V AC":"1.2 A","Rated value at 230 V AC":"0.6 A","Rated value at 230 V DC":"0.6 A","Active power input, typ.":"97.5 W","Short-circuit protection":"Yes","Backup battery (optional)":"Yes; 2x lithium AA; 3.6 V / 1.9 Ah","Equipment protection class":"I, with protective conductor","Permissible Range, Lower Limit":"47 Hz","Permissible Range, Upper Limit":"63 Hz","Design of electrical connection":"3x 1.5 mm², solid or stranded wire with end sleeve, external diameter 3 mm to 9 mm","for backplane bus (5 V DC), max.":"10 A; 200 mA base load required","for backplane bus (24 V DC), max.":"1 A; idling-proof","Mains/voltage failure stored energy time":"20 ms","Mains buffering according to NAMUR recommendation":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$537.21 – $1,056.00","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=128003&mlfb=6ES7407-0KR00-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7407-0KR00-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 6ES7407-0KR00-0AA0?","answer":"This part is sourced to order through our independent distribution network. Submit an RFQ for current pricing and availability — we confirm both at quote time."},{"question":"What is the 5 V DC output rating on this PS407?","answer":"The 5 V DC rail is rated for 10 A maximum, with a 200 mA base load required to maintain regulation. The 24 V DC rail provides up to 1 A and is idling-proof."},{"question":"Does 6ES7407-0KR00-0AA0 support redundant operation?","answer":"Yes, the description explicitly states 'for redundant use,' allowing two units to be installed in the same rack for load sharing or backup without backplane conflicts."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7407-0KR00-0AA0","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/6ES7407-0KR00-0AA0 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}}