Main Components of a PLC System: Complete Guide for Engineers
Master PLC system components: CPU, power supply, I/O modules, communication interfaces, and software with sizing formulas and selection tips. Shop at Stoklink.
Once production ends, supply depends on remaining stock.
No replacement announced yet. Tell us the application and we will propose an alternative.
SITOP battery module, 24V/7Ah lead-acid, for SITOP DC UPS 6A, 15A and 40A modules.
The Siemens 6EP1935-6ME21 is a SITOP battery module with a 7 Ah maintenance-free lead-acid battery pack rated 24 V DC, sized for the SITOP DC UPS 6 A, 15 A, and 40 A modules. It supplies up to 30 A in buffering mode and 30 A peak, and mounts on a wall via keyhole mounting rather than snapping onto a DIN rail.
This is the largest battery module in the SITOP family, covering the 6 A, 15 A, and 40 A DC UPS modules where the 3.2 Ah and 2.5 Ah modules only reach up to 15 A. Its 30 A buffering current and peak current are what make the 40 A UPS module usable at full load. Unlike the smaller battery modules, it is wall-mounted rather than DIN-rail snap-on, which should be accounted for in enclosure layout given its 6 kg weight and larger 186 x 168 x 121 mm footprint.
| product brand name | SITOP |
|---|---|
| product type designation | Battery module |
| product designation | Battery module 7 Ah |
| type of battery | maintenance-free lead-acid batteries |
| product version | Extension module/battery module |
| end-of-charge voltage at DC: at -10 °C recommended | 29 V |
|---|---|
| end-of-charge voltage at DC: at 0 °C recommended | 28.4 V |
| end-of-charge voltage at DC: at 20 °C recommended | 27.3 V |
| end-of-charge voltage at DC: at 30 °C recommended | 26.8 V |
| end-of-charge voltage at DC: at 40 °C recommended | 26.6 V |
| end-of-charge voltage at DC: at 50 °C recommended | 26.3 V |
| battery capacity | 7 A·h |
|---|---|
| output current in buffering mode maximum | 30 A |
| peak current | 30 A |
| charging current maximum | 1.75 A |
| output voltage at DC rated value | 24 V |
| Part number | 6EP1935-6ME21 |
|---|---|
| Type designation | Battery module |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Phase-out announced by the manufacturer |
| EAN | 4025515150497 |
| ETIM class | EC000357 |
| eCl@ss | 27050403 |
| communication function | No |
|---|
| design of short-circuit protection | Battery fuse 20 A/32 V (solid-state circuitry blade-type fuse + support) |
|---|---|
| design of the overload protection | Valve control |
| operating resource protection class | Class III |
|---|---|
| protection class IP | IP00 |
| certificate of suitability: CE marking | Yes |
|---|---|
| certificate of suitability: UL approval | Yes; cURus-Recognized (UL 1778, CSA C22.2 No. 107.1), File E219627 |
| certificate of suitability: EAC approval | Yes |
| certificate of suitability: ATEX | No |
|---|
| shipbuilding approval | Yes |
|---|---|
| Marine classification association: American Bureau of Shipping Europe Ltd. (ABS) | Yes |
| Marine classification association: Det Norske Veritas (DNV) | Yes |
| Environmental Product Declaration | Yes |
|---|---|
| global warming potential [CO2 eq]: total | 20.932 kg |
| global warming potential [CO2 eq]: during manufacturing | 13.108 kg |
| global warming potential [CO2 eq]: during operation | 5.658 kg |
| global warming potential [CO2 eq]: after end of life | 0.515 kg |
| ambient condition | 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. |
|---|---|
| ambient temperature: during operation | -15 ... +50 °C |
| ambient temperature: during transport | -20 ... +50 °C |
| ambient temperature: during storage | -20 ... +50 °C |
| relative temporary capacity loss at 20 °C in a month typical | 3% |
| service life of energy storage: typical | capacity falls to 80 % of original capacity (according to EUROBAT) |
|---|---|
| service life of energy storage: at 20 °C typical | 4 a |
| service life of energy storage: at 30 °C typical | 2 a |
| service life of energy storage: at 40 °C typical | 1 a |
| service life of energy storage: at 50 °C typical | 0.5 a |
| note | 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. |
| type of electrical connection | spring-loaded terminals |
|---|---|
| for UPS module | 1 screw terminal each for 0.08 ... 4 mm2 for + BAT and - BAT |
| width × height × depth of the enclosure | 186 × 168 × 121 mm |
|---|---|
| installation width × mounting height | 206 mm × 188 mm |
| fastening method | can be screwed onto flat surface (keyhole mounting for hooking in to M4 screws) |
| DIN-rail mounting | No |
| S7 rail mounting | No |
| wall mounting | Yes |
| number of cells | 12 |
| product component included | Accessories pack with solid-state circuitry fuse 20 A and 30 A |
|---|
| other information | Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified) |
|---|
| eClass | 16 27-05-04-03 |
|---|---|
| ETIM | 10 EC000357 |
| UNSPSC | 15 26-11-17-01 |
| Net weight | 5.2 kg |
|---|---|
| Country of origin | Austria |
| Shipping weight | 6.2 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated current of Battery module is 30 A.
The tariff (HS) code on file for Battery module is 85072080.
The EAN (GTIN) of Battery module is 4025515150497.
Battery module ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
Master PLC system components: CPU, power supply, I/O modules, communication interfaces, and software with sizing formulas and selection tips. Shop at Stoklink.