{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6EP3437-8SB00-0AY0","brand":"Siemens","brandSlug":"siemens","productSlug":"6EP3437-8SB00-0AY0","canonicalUrl":"https://aoctrl.com/siemens/6EP3437-8SB00-0AY0","factsUrl":"https://aoctrl.com/api/mcp/products/6EP3437-8SB00-0AY0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SITOP power supply, 6EP3437-8SB00-0AY0, 40 A rated, 575 V input, DIN rail mount, IP20.","salesMarkdown":"## Key Ratings & Fit The 6EP3437-8SB00-0AY0: Rated 40 A continuous at 575 V input, 50/60 Hz. That's the headline number for sizing — but watch the derating: above 60 °C ambient, you lose 4% per Kelvin up to 70 °C. At 70 °C, that's 40 A × (1 - 0.04 × 10) = 24 A effective. Input voltage range is 400–500 V AC, three-phase (, L2, L3, PE). The unit also handles 320 V initial inrush. Feeder protection is specified: a 3-pole 10–16 A C-curve MCB or a Siemens 3RV2011-1DA10 (3 A setting) or 3RV2711-1DD10 (UL 489). Don't skip this — the I²t max is 2.24 A²·s, so the upstream breaker must coordinate. Output is SELV (safety extra-low voltage) per EN 60950-1 and EN 50178, galvanically isolated. The output terminals: two screw terminals for + (0.5–16 mm²) and three for - (same range). That's generous for paralleling loads or daisy-chaining to a distribution block. Snaps onto DIN rail EN 60715 35×15. Clearance: 40 mm top and bottom, 0 mm left and right — so it can sit flush against other modules in a row. IP20 enclosure, so it's for clean, dry cabinet environments only. Operating temperature -25 to +70 °C with natural convection; storage/transport -40 to +85 °C. ## Compliance & Approvals UL/CSA listed (UL 508, CSA C22.2 No. 107.1), file E197259, plus cCSAus per CSA C22.2 No. 60950-1 and UL 60950-1. CE, C-Tick, DNV GL, and EAC approvals are on file. No ATEX, IECEx, FM, or UL hazloc — so not for explosive atmospheres. NEC Class 2 not met, so output wiring must follow Article 725 for Class 1 circuits. ## Reliability & Quiescent Draw MTBF at 40 °C is 517,015 hours — roughly 59 years. That's a solid number for a power supply in a controlled environment. Standby current: typical 0.6 mA, max 1 mA. Negligible for energy budgeting, but good to know for battery-backed or UPS-fed panels.","metaTitle":"Siemens 6EP3437-8SB00-0AY0 Power Supply, 40 A, 575 V","metaDescription":"Siemens 6EP3437-8SB00-0AY0 power supply, rated 40 A at 575 V, UL/CSA listed, DIN rail mount, current production. Sourced to order via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["DIN Rail Power Supplies"],"specifications":{"Top":"40 mm","ATEX":"No","Left":"0 mm","IECEx":"No","Right":"0 mm","title":"6EP3437-8SB00-0AY0","Bottom":"40 mm","C-Tick":"Yes","DNV GL":"Yes","Maximum":"1 mA","Typical":"0.6 mA","At Input":"L1, L2, L3, PE: 1 screw terminal each for 0.5 ... 4 mm² single-core/finely stranded","At Output":"+: 2 screw terminals each for 0.5 ... 16 mm²; -: 3 screw terminals each for 0.5 ... 16 mm²","CE marking":"Yes","NEC Class 2":"No","Rated Range":"0 ... 40 A; +60 ... +70 °C: Derating 4%/K","Rated Value":"40 A","UL approval":"Yes; cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259; cCSAus (CSA C22.2 No. 60950-1, UL 60950-1)","description":"SITOP PSU8200 24 V/40 A stabilized power supply input: 400-500 V 3 AC output: 24 V DC/40 A *Ex approval no longer available*","CSA approval":"Yes; cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259; cCSAus (CSA C22.2 No. 60950-1, UL 60950-1)","EAC approval":"Yes","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","In The Feeder":"Required: 3-pole connected miniature circuit breaker 10 ... 16 A characteristic C or circuit breaker 3RV2011-1DA10 (setting 3 A) or 3RV2711-1DD10 (UL 489)","Initial Value":"320 V","During Storage":"-40 ... +85 °C","Line Frequency":"45 ... 65 Hz","MTBF at 40 °C":"517 015 h","FM registration":"No","lifecycle_stage":"current","During Operation":"-25 ... +70 °C; With natural convection","During Transport":"-40 ... +85 °C","Fastening Method":"Snaps onto DIN rail EN 60715 35x15","Full-Scale Value":"575 V","I2t value maximum":"2.24 A²·s","Other Information":"Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified)","ULhazloc approval":"No","Galvanic Isolation":"Safety extra-low output voltage Uout acc. to EN 60950-1 and EN 50178","Maximum Rated Value":"500 V","Minimum Rated Value":"400 V","protection class IP":"IP20","Bridging Of Equipment":"Yes; switchable characteristic","Efficiency In Percent":"94 %","Shipbuilding Approval":"ABS, DNV GL","Depth Of The Enclosure":"150 mm","Electrical Accessories":"Buffer module","For Auxiliary Contacts":"13, 14 (alarm signal), 15, 16 (Remote): 1 screw terminal each for 0.05 ... 2.5 mm²","Mechanical Accessories":"Device identification label 20 mm × 7 mm, TI-grey 3RT2900-1SB20","Response Delay Maximum":"0.1 s","Width Of The Enclosure":"135 mm","Height Of The Enclosure":"145 mm","Voltage Curve At Output":"Controlled, isolated DC voltage","For Emitted Interference":"EN 55022 Class B","Nippon Kaiji Kyokai (NK)":"No","Type Of Signal At Output":"Relay contact (NO contact, rating 60 V DC/ 0.3 A) for \"24 V OK\"","Adjustable Output Voltage":"24 ... 28 V","For Interference Immunity":"EN 61000-6-2","cCSAus, Class 1, Division 2":"No","at rated input voltage 400 V":"2.1 A","at rated input voltage 500 V":"1.7 A","Supplied Active Power Typical":"960 W","Type Of Electrical Connection":"screw-type terminals","at output 1 at DC rated value":"24 V","For Mains Harmonics Limitation":"EN 61000-3-2","Type Of Output Voltage Setting":"via potentiometer; max. 960 W","Design Of Input Wide Range Input":"Yes","During NO-Load Operation Maximum":"4 W","Type Of The Power Supply Network":"3-phase AC","output voltage at DC rated value":"24 V","At Short-Circuit During Operation":"25 ms","Lloyds Register of Shipping (LRS)":"No","Design Of Short-Circuit Protection":"Alternatively, constant current characteristic approx. 44 A or latching shutdown","On Slow Fluctuation Of Ohm Loading":"0.2 %","Operating Resource Protection Class":"Class I","Design Of The Overvoltage Protection":"< 31.8 V","Display Version For Normal Operation":"Green LED for 24 V OK","On Slow Fluctuation Of Input Voltage":"0.1 %","At Short-Circuit During Operation Typical":"120 A","French marine classification society (BV)":"No","Relative Overall Tolerance Of The Voltage":"3 %","Operating Condition Of The Mains Buffering":"at Vin = 400 V","Product Function Output Voltage Adjustable":"Yes","Property Of The Output Short-Circuit Proof":"Yes","Galvanic Isolation Between Input And Output":"Yes","American Bureau of Shipping Europe Ltd. (ABS)":"Yes","environmental category according to IEC 60721":"Climate class 3K3, 5 … 95% no condensation","Display Version For Overload And Short Circuit":"LED yellow for \"overload\", LED red for \"latching shutdown\"","On Short-Circuiting During The Start-Up Typical":"44 A","Behavior Of The Output Voltage When Switching On":"minimal overshooting (< 2 %)","Overcurrent Overload Capability In Normal Operation":"overload capability 150 % Iout rated up to 5 s/min","current limitation of inrush current at 25 °C maximum":"13 A","Product Feature Of The Enclosure Housing Can Be Lined Up":"Yes","At Rated Output Voltage For Rated Value Of The Output Current Typical":"66 W","Number Of Parallel-Switched Equipment Resources For Increasing The Power":"2","Buffering Time For Rated Value Of The Output Current In The Event Of Power Failure Minimum":"10 ms","Relative Control Precision Of The Output Voltage With Rapid Fluctuation Of The Input Voltage By +/- 15% Typical":"1 %"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$279.40 – $822.49","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bf383fc437904e693ba1786c54ba30b1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1108808&mlfb=6EP3437-8SB00-0AY0"},"ai":{"faq":[{"question":"What are the key ratings for 6EP3437-8SB00-0AY0?","answer":"Rated 40 A continuous at 575 V input, 50/60 Hz. Input range 400–500 V AC three-phase. Output is SELV isolated. Derate 4%/K above 60 °C ambient. Feeder protection requires a 10–16 A C-curve MCB or specified Siemens breaker."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6EP3437-8SB00-0AY0","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/6EP3437-8SB00-0AY0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}