{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6EP1935-6MF01","brand":"Siemens","brandSlug":"siemens","productSlug":"6EP1935-6MF01","canonicalUrl":"https://aoctrl.com/siemens/6EP1935-6MF01","factsUrl":"https://aoctrl.com/api/mcp/products/6EP1935-6MF01","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SITOP battery module 6EP1935-6MF01, 12 cells, 12 Ah, UL 1778, DNV GL, current production.","salesMarkdown":"The 6EP1935-6MF01: What matters for uptime planning: the float service life is entirely temperature-driven. At 20 °C the module delivers a typical 4-year life; at 30 °C that drops to 2 years, and at 40 °C to 1 year. If your enclosure runs warm — and most control cabinets do — you need to derate the replacement interval accordingly. The 50 °C figure (0.5 a) is essentially a warning: this battery should not live in a hot panel without active ventilation. ## Charging and Integration Charging current is limited to a maximum of 3 A, which governs the charge time and the upstream DC-UPS sizing. The module ships with an accessories pack containing a solid-state circuitry fuse rated at 20 A and 30 A — one less thing to source separately for the panel build. The charging voltage must be temperature-compensated: at 20 °C the recommended float voltage is 27.3 V, rising to 29 V at -10 °C and dropping to 26.3 V at 50 °C. This is not a 'set and forget' parameter — the DC-UPS unit or charge controller must have a temperature sensor input or the battery will be under- or over-charged across the seasonal range. Mounting is via keyhole slots for M4 screws onto a flat surface — no DIN rail, no S7 rail. The module occupies 253 mm width, 168 mm height, 121 mm depth, so plan for dedicated panel real estate, not a DIN channel. Terminal connections are screw-type accepting 0.08 to 4 mm² for the battery leads. The module carries cURus recognition to UL 1778 and CSA C22.2 No. 107.1 (File E219627), CE marking, and EAC approval. For marine and offshore applications it holds ABS and DNV GL shipbuilding approval — a non-negotiable for any vessel or offshore platform UPS circuit. ATEX rating is explicitly No — this is not certified for explosive atmospheres. IP00 protection class means it is a panel-internal component only — no exposure to dust or moisture without an enclosure.","metaTitle":"Siemens 6EP1935-6MF01 Battery Module, 12 Ah, 12 Cells, Curre","metaDescription":"Siemens 6EP1935-6MF01 lead-acid battery module. 12 Ah capacity, 12 cells. UL, DNV GL approved. Current production. Float service life derates with temperature. Sourced to order aga","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Supplies"],"specifications":{"ATEX":"No","title":"6EP1935-6MF01","DNV GL":"Yes","Typical":"capacity falls to 80 % of original capacity (according to EUROBAT)","CE marking":"Yes","UL approval":"Yes","description":"SITOP battery module 24 V/12 Ah with maintenance free sealed lead batteries for SITOP DC UPS module 6 A, 15 A and 40 A *Ex approval no longer available*","EAC approval":"Yes","Wall Mounting":"Yes","During Storage":"-20 ... +50 °C","Mounting Height":"188 mm","Number Of Cells":"12","lifecycle_stage":"current","Battery Capacity":"12 A·h","During Operation":"-15 ... +50 °C","During Transport":"-20 ... +50 °C","Fastening Method":"can be screwed onto flat surface (keyhole mounting for hooking in to M4 screws)","S7 rail mounting":"No","Other Information":"Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified)","at 20 °C typical":"4 a","at 30 °C typical":"2 a","at 40 °C typical":"1 a","at 50 °C typical":"0.5 a","Installation Width":"273 mm","Operating data note":"For storage, mounting and operation of lead-acid batteries, the relevant DIN/VDE regulations or country-specific regulations (e.g. VDE 0510 Part 2/EN 50272-2) must be observed. You must ensure that the battery site is sufficiently ventilated. Possible sources of ignition must be at least 50 cm away.","as approval for USA":"cURus-Recognized (UL 1778, CSA C22.2 No. 107.1), File E219627","protection class IP":"IP00","at 0 °C recommended":"28.4 V","For Power Supply Unit":"1 screw terminal each for 0.08 ... 4 mm² for + BAT and - BAT","Shipbuilding Approval":"ABS, DNV GL","at 10 °C recommended":"27.8 V","at 20 °C recommended":"27.3 V","at 30 °C recommended":"26.8 V","at 40 °C recommended":"26.6 V","at 50 °C recommended":"26.3 V","Depth Of The Enclosure":"121 mm","Standard Rail Mounting":"No","Width Of The Enclosure":"253 mm","at -10 °C recommended":"29 V","Height Of The Enclosure":"168 mm","Charging Current Maximum":"3 A","Product Component Included":"Accessories pack with solid-state circuitry fuse 20 A and 30 A","cCSAus, Class 1, Division 2":"No","Type Of Electrical Connection":"spring-loaded terminals","output voltage at DC rated value":"24 V","Design Of The Overload Protection":"Valve control","Ambient Temperature During Storage":"Along with the storage and operating temperature, other factors such as the duration of the storage period and the charge status during storage have a decisive influence on the possible useful life. Batteries should therefore be stored as briefly as possible, always fully charged, and within the temperature range 0 to +20 °C.","Design Of Short-Circuit Protection":"Battery fuse 20 A/32 V (solid-state circuitry blade-type fuse + support)","Operating Resource Protection Class":"Class III","American Bureau of Shipping Europe Ltd. (ABS)":"Yes","relative temporary capacity loss at 20 °C in a month typical":"3 %"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$142.24","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/dedd9ff40828dd08631a936ae0dcd63d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=175479&mlfb=6EP1935-6MF01"},"ai":{"faq":[{"question":"What approvals does this battery module carry?","answer":"It carries cURus recognition to UL 1778 and CSA C22.2 No. 107.1, CE marking, EAC approval, and ABS/DNV GL shipbuilding approval. It is not ATEX rated."},{"question":"What is the expected service life at typical cabinet temperatures?","answer":"At 20 °C the typical float service life is 4 years. This drops to 2 years at 30 °C, 1 year at 40 °C, and 0.5 years at 50 °C. Cabinet temperature is the dominant variable in replacement planning."},{"question":"Can this battery module be mounted on DIN rail?","answer":"No. The module does not support DIN rail or S7 rail mounting. It is designed for screw-mounting to a flat surface via keyhole slots for M4 screws."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6EP1935-6MF01","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/6EP1935-6MF01 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}}