{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6EP3333-6SB00-0AY0","brand":"Siemens","brandSlug":"siemens","productSlug":"6EP3333-6SB00-0AY0","canonicalUrl":"https://aoctrl.com/siemens/6EP3333-6SB00-0AY0","factsUrl":"https://aoctrl.com/api/mcp/products/6EP3333-6SB00-0AY0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SITOP PSU8200, 6EP3333-6SB00-0AY0, 24 V DC / 4 A regulated power supply, 100-240 V AC input, DIN rail mount, IP20.","salesMarkdown":"The Siemens 6EP3333-6SB00-0AY0 is a 24 V DC regulated power supply from the SITOP PSU8200 series, rated for a continuous 4 A output. Input accepts 100–240 V AC at 47–63 Hz, so it handles both 50 Hz and 60 Hz line feeds without adjustment. The 24 V DC output is galvanically isolated, delivering SELV per EN 60950-1 and EN 50178 — meaning the output is safe to touch and suitable for powering PLCs, sensors, and I/O modules in a control panel. The headline rating is 4 A continuous at 24 V DC, but that's only valid up to +55 °C ambient. Above that, up to +70 °C, you derate 2 % per Kelvin — so at 60 °C you're looking at about 3.6 A usable, and at 70 °C roughly 2.8 A. If your cabinet runs hot, size the load accordingly. The internal fuse is rated for a maximum I²t of 2.5 A²·s, which limits inrush. The recommended upstream protection is a 10 A B-curve or 6 A C-curve miniature circuit breaker — that's the feeder breaker spec, not the output load breaker. MTBF at 40 °C is listed at 2,391,480 hours — roughly 273 years of continuous operation. That's a calculated figure under ideal conditions, but it tells you the design is solid-state and fanless, with no wear items beyond the electrolytic caps. Mounts via snap-on to DIN rail EN 60715, or can be direct-mounted in different positions. Clearance: 20 mm top and bottom, zero left and right — so you can pack units tight side-by-side, but need breathing room above and below for convection cooling. No ATEX or IECEx certification, so not for hazardous locations. ## Approvals and compliance — what the nameplate carries cULus-Listed under UL 508 and CSA C22.2 No. 107.1 (File E197259), plus cURus-Recognized under UL 60950 and CSA C22.2 No. 60950 (File E151273). Also carries CE and EAC marks, plus DNV GL marine type approval. No NEC Class 2 rating, no FM registration, no UL hazloc.","metaTitle":"Siemens 6EP3333-6SB00-0AY0 Power Supply, 4 A, 24 VDC","metaDescription":"Siemens 6EP3333-6SB00-0AY0 power supply, 4 A rated at 24 VDC, 100-240 VAC input. cULus listed, DIN rail mount. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["DIN Rail Power Supplies"],"specifications":{"Top":"20 mm","ATEX":"No","Left":"0 mm","IECEx":"No","Right":"0 mm","at DC":"110 ... 300 V","title":"6EP3333-6SB00-0AY0","Bottom":"20 mm","DNV GL":"Yes","Maximum":"5 A","Typical":"5 A","At Input":"L, N: 1 screw terminal each for 0.5 ... 2.5 mm2 single-core/finely stranded","At Output":"+, -: 1 screw terminal each for 0.5 ... 2.5 mm²","CE marking":"Yes","NEC Class 2":"No","Rated Range":"0 ... 4 A; +55 ... +70 °C: Derating 2%/K","Rated Value":"4 A","UL approval":"Yes; cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259; cURus-Recognized (UL 60950, CSA C22.2 No. 60950), File E151273","description":"LOGO!Power 24 V / 4 A stabilized power supply input: 100-240 V AC output: 24 V DC / 4 A *Ex approval no longer available*","CSA approval":"Yes; cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259; cURus-Recognized (UL 60950, CSA C22.2 No. 60950), File E151273","EAC approval":"Yes","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","In The Feeder":"Recommended miniature circuit breaker: from 10 A characteristic B or from 6 A characteristic C","Initial Value":"85 V","During Storage":"-40 ... +85 °C","Line Frequency":"47 ... 63 Hz","MTBF at 40 °C":"2 391 480 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 35x7.5/15, direct mounting in different mounting positions","Full-Scale Value":"264 V","I2t value maximum":"2.5 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":"240 V","Minimum Rated Value":"100 V","protection class IP":"IP20","Fuse Protection Type":"internal","Bridging Of Equipment":"Yes","Efficiency In Percent":"89.1 %","Shipbuilding Approval":"ABS, BV, DNV GL, LRS","Depth Of The Enclosure":"53 mm","Response Delay Maximum":"0.5 s","Width Of The Enclosure":"72 mm","Height Of The Enclosure":"90 mm","Voltage Curve At Output":"Controlled, isolated DC voltage","For Emitted Interference":"EN 55022 Class B","Nippon Kaiji Kyokai (NK)":"No","Adjustable Output Voltage":"22.2 ... 26.4 V","For Interference Immunity":"EN 61000-6-2","Load Step 10 To 90% Typical":"1 ms","Load Step 90 To 10% Typical":"1 ms","cCSAus, Class 1, Division 2":"No","at rated input voltage 120 V":"1.95 A","at rated input voltage 230 V":"0.97 A","Supplied Active Power Typical":"96 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","Overvoltage Overload Capability":"300 V AC for 1 s","Design Of Input Wide Range Input":"Yes","During NO-Load Operation Maximum":"0.3 W","Type Of The Power Supply Network":"1-phase AC or DC","output voltage at DC rated value":"24 V","Lloyds Register of Shipping (LRS)":"Yes","Design Of Short-Circuit Protection":"Constant current characteristic","Measuring Point For Output Current":"50 mV =^ 4 A","On Slow Fluctuation Of Ohm Loading":"0.1 %","Operating Resource Protection Class":"Class II (without protective conductor)","Design Of The Overvoltage Protection":"Yes, according to EN 60950-1","Display Version For Normal Operation":"Green LED for output voltage OK","On Slow Fluctuation Of Input Voltage":"0.1 %","French marine classification society (BV)":"Yes","Relative Overall Tolerance Of The Voltage":"3 %","Operating Condition Of The Mains Buffering":"at Vin = 187 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","Behavior Of The Output Voltage When Switching On":"No overshoot of Vout (soft start)","Overcurrent Overload Capability When Switching On":"150% Iout rated typ. 200 ms","Overcurrent Overload Capability In Normal Operation":"overload capability 150% Iout rated typ. 200 ms","current limitation of inrush current at 25 °C maximum":"31 A","Product Feature Of The Enclosure Housing Can Be Lined Up":"Yes","At Rated Output Voltage For Rated Value Of The Output Current Typical":"11.7 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":"40 ms","Relative Control Precision Of The Output Voltage With Rapid Fluctuation Of The Input Voltage By +/- 15% Typical":"0.2 %"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$72.39 – $165.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/9518c6ac3524eecd82843dcc6ee53e27.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=909434&mlfb=6EP3333-6SB00-0AY0"},"ai":{"faq":[{"question":"What are the key approvals on this power supply?","answer":"It carries cULus-Listed (UL 508, CSA C22.2 No. 107.1), cURus-Recognized (UL 60950, CSA C22.2 No. 60950), CE, EAC, and DNV GL marine type approval. No ATEX, IECEx, NEC Class 2, FM, or UL hazloc."},{"question":"What is the output derating above 55 °C?","answer":"The rated range is 0 to 4 A from 0 to +55 °C. From +55 to +70 °C, derate at 2 % per Kelvin. At 70 °C the usable output is approximately 2.8 A."},{"question":"What upstream protection does it need?","answer":"Siemens recommends a miniature circuit breaker of 10 A characteristic B or 6 A characteristic C in the feeder. The internal fuse has a maximum I²t of 2.5 A²·s."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6EP3333-6SB00-0AY0","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/6EP3333-6SB00-0AY0 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}}