{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7405-0KR00-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7405-0KR00-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7405-0KR00-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7405-0KR00-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-400, Power supply PS405, wide range 10 A, 24/48/60 V DC; 5 V DC/10 A for redundant use.","salesMarkdown":"The Siemens 6ES7405-0KR00-0AA0 is a SIMATIC S7-400 power supply module — the PS405 wide-range unit that takes 24, 48, or 60 V DC input and delivers 5 V DC at up to 10 A to the backplane bus. It occupies 2 slots in the rack and is designed for redundant configurations, meaning you can pair two units for N+1 or 1+1 redundancy without extra hardware. The 5 V DC rail feeds the CPU and I/O modules; the 24 V DC backplane bus is also supported at 1 A for external loads like interface modules. The headline number is the 10 A at 5 V DC for the backplane bus — that's the total current available to power all S7-400 modules in the rack. A base load of 200 mA is required just to keep the bus alive. The input side is flexible: at 24 V DC it draws 4.5 A, at 48 V DC it draws 2.1 A, and at 60 V DC it draws 1.7 A. That wide-range input means the same part works on 24 V control panels or higher-voltage DC plants without a step-down converter. Inrush current hits 18 A for 20 ms at full width at half maximum — enough to trip a fast-acting breaker if the upstream protection isn't coordinated. The module includes short-circuit protection on the output, so a fault on the 5 V rail won't cascade into the input supply. Typical power loss is 29 W, which adds to the panel's thermal load; plan ventilation accordingly. Mains buffering holds the output for 20 ms on a voltage failure, and it meets NAMUR recommendation for process plants where ride-through is critical. An optional backup battery (2x lithium AA, 3.6 V / 1.9 Ah) keeps the internal real-time clock and SRAM alive during extended outages. Physically, the module is 290 mm high, 50 mm wide, and 217 mm deep — it slides into a standard S7-400 rack and requires 2 slot positions. The electrical connection uses 3x 1.5 mm² solid or stranded wire with end sleeves, accepting an external diameter of 3 mm to 9 mm. Equipment protection class I means a protective earth conductor is mandatory. FM approval is on file: up to 40 °C the temperature class is T4, so the module is suitable for installation in Class I, Division 2 hazardous locations (gas groups A, B, C, D) within that temperature limit. This is a key differentiator for process and refinery panels where ordinary power supplies would require external purging.","metaTitle":"Siemens 6ES7405-0KR00-0AA0 S7-400 PS405 Power Supply, 10A","metaDescription":"SIMATIC S7-400 power supply PS405, wide range 24/48/60 V DC input, 5 V DC/10 A output for redundant use. FM approved, 2 slots, mature lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC I/O & Expansion Modules"],"specifications":{"Depth":"217 mm","Width":"50 mm","5 V DC":"Yes","Height":"290 mm","24 V DC":"Yes","48 V DC":"Yes","60 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.":"29 W","Primary/Secondary":"Yes","Inrush current, max.":"18 A; Full width at half maximum 20 ms","Rated value at 24 V DC":"4.5 A","Rated value at 48 V DC":"2.1 A","Rated value at 60 V DC":"1.7 A","Active power input, typ.":"104 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","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":"$533.40","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=317627&mlfb=6ES7405-0KR00-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7405-0KR00-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of this module?","answer":"The depth is 217 mm. Combined with the 290 mm height and 50 mm width, it fits in the standard S7-400 rack and requires 2 slot positions."},{"question":"Can this power supply be used in a redundant configuration?","answer":"Yes. The description explicitly states it is designed for redundant use, meaning two units can be wired in parallel for N+1 or 1+1 redundancy without additional load-sharing modules."},{"question":"What approvals does this module carry?","answer":"It carries FM approval with temperature class T4 up to 40 °C, suitable for Class I Division 2 hazardous locations. Equipment protection class I requires a protective earth conductor. The module also supports NAMUR buffering for process-industry ride-through."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7405-0KR00-0AA0","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/6ES7405-0KR00-0AA0 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}}