{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6EP1935-6MD11","brand":"Siemens","brandSlug":"siemens","productSlug":"6EP1935-6MD11","canonicalUrl":"https://aoctrl.com/siemens/6EP1935-6MD11","factsUrl":"https://aoctrl.com/api/mcp/products/6EP1935-6MD11","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SITOP battery module 6EP1935-6MD11, 3.2 Ah, 12-cell lead-acid, DIN rail mount, UL 1778, DNV GL, ABS approved.","salesMarkdown":"## What this battery module is The Siemens 6EP1935-6MD11 is a 12-cell lead-acid battery module rated at 3.2 Ah, designed as the backup energy store for SITOP UPS systems. It snaps onto DIN rail EN 60715 35x7.5/15 or mounts via keyhole slots for M4 screws — no separate battery cabinet needed, which saves panel space. The 210 mm installation width and 171 mm height tell you the footprint: it's a wide, flat brick that fits a standard 600 mm enclosure bay. IP00 means it's an open-frame battery — install it inside a clean, dry enclosure, not on the plant floor. The operating range is -15 to +50 °C, but the capacity drops fast as the temperature climbs: at 40 °C you get 1 year typical life; at 20 °C that stretches to 4 years. That's the EUROBAT curve baked into the datasheet — plan your replacement interval around the ambient temp in the panel, not the calendar. ## Charging and connection Maximum charging current is 0.8 A — pair it with a SITOP UPS module that limits charge current to that figure, or the battery won't reach full capacity. The screw terminals accept 0.08 to 2.5 mm² wire for the +BAT and -BAT connections. An accessories pack with a 15 A solid-state fuse is included in the box. Charge voltage is temperature-compensated: at 20 °C set 27.3 V, at 40 °C drop to 26.6 V, at 0 °C raise to 28.4 V. The SITOP UPS module handles this automatically if the temperature sensor is connected — if you're wiring it to a third-party charger, you'll need to implement the compensation curve manually. This module carries cURus recognition under UL 1778 and CSA C22.2 No. 107.1 (File E219627), plus CE and EAC marking. For marine applications it holds DNV GL and ABS shipbuilding approval — that's the key differentiator versus standard SITOP batteries. ATEX is explicitly listed as No, so it's not rated for explosive atmospheres. Lifecycle status is current production. This is not an NRND or obsolete line — Siemens still builds it, and the supply channel is standard. No official successor has been announced.","metaTitle":"Siemens 6EP1935-6MD11 Battery Module, 3.2 Ah, 12 Cells, DIN","metaDescription":"Siemens 6EP1935-6MD11 lead-acid battery module, 3.2 Ah, 12 cells, snaps onto DIN rail. UL 1778, CSA, DNV GL, ABS approved. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["DIN Rail Power Supplies"],"specifications":{"ATEX":"No","title":"6EP1935-6MD11","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/3.2 Ah with maintenance-free sealed lead batteries for SITOP DC UPS module 6 A and 15 A *Ex approval no longer available*","EAC approval":"Yes","Wall Mounting":"Yes","During Storage":"-20 ... +50 °C","Mounting Height":"171 mm","Number Of Cells":"12","lifecycle_stage":"current","Battery Capacity":"3.2 A·h","During Operation":"-15 ... +50 °C","During Transport":"-20 ... +50 °C","Fastening Method":"snaps onto DIN rail EN 60715 35x7.5/15 or 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":"210 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 ... 2.5 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":"82 mm","Standard Rail Mounting":"Yes","Width Of The Enclosure":"190 mm","at -10 °C recommended":"29 V","Height Of The Enclosure":"151 mm","Charging Current Maximum":"0.8 A","Product Component Included":"Accessories pack with solid-state circuitry fuse 15 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 15 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":"$92.71","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ad660d9dcb07c71e14cffe196669487c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=521889&mlfb=6EP1935-6MD11"},"ai":{"faq":[{"question":"What approvals does the 6EP1935-6MD11 carry?","answer":"It holds cURus (UL 1778, CSA C22.2 No. 107.1), CE, EAC, DNV GL, and ABS shipbuilding approval. ATEX is listed as No."},{"question":"What is the charging current limit for this battery?","answer":"Maximum charging current is 0.8 A. Exceeding this will damage the cells or reduce service life."},{"question":"Where can I buy the 6EP1935-6MD11?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6EP1935-6MD11","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/6EP1935-6MD11 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}}