Main Components of a PLC System: Complete Guide for Engineers
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SITOP BUF8600 buffer module for PSU8600, 300ms ride-through at 40A, electrolytic caps
The Siemens 6EP4297-8HB10-0XY0 is a SITOP BUF8600 buffer module that plugs into a SITOP PSU8600 power supply and uses maintenance-free electrolytic capacitors to hold a 40 A load for 300 ms during a mains interruption. It recharges in about 60 seconds at 400 V and reports buffer status over Ethernet/PROFINET through the PSU8600, sitting between the shortest and longest bridging times in the buffer-module line.
Triple the bridging time of the fastest electrolytic-capacitor module in this line costs a 60-second recharge instead of a 20-second one and a larger 125 x 125 x 150 mm enclosure, so it fits equipment that needs more margin against a longer sag but does not justify the recharge delay of a double-layer capacitor module rated in seconds. Pick it for control loads where a 100 ms bridge is occasionally too short but a multi-second double-layer capacitor buffer is more capacity than the load actually needs.
| product brand name | SITOP |
|---|---|
| product type designation | BUF8600 |
| type of current supply | 300 ms/40 A |
| type of energy storage | electrolytic capacitors |
|---|---|
| product function DC-UPS modularly expandable | Yes |
| design of the mains power cut bridging-connection | Backup time with 40 A load current: 300 ms |
| buffering time for rated value of the output current in the event of power failure | 300 ms |
| load time typical | 60 s; at 400 V |
| output current: rated value | 40 A |
|---|
| Part number | 6EP4297-8HB10-0XY0 |
|---|---|
| Type designation | BUF8600 |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515154518 |
| ETIM class | EC000382 |
| eCl@ss | 27040705 |
| display version | 3-color LED for operating state module |
|---|---|
| for normal operation | LED green for "buffer standby exist" |
| in buffering mode | LED yellow for "buffered mode" |
| product function communication function | Yes |
|---|---|
| design of the interface | Ethernet/PROFINET via power supply unit PSU8600 |
| operating resource protection class | Class III |
|---|---|
| protection class IP | IP20 |
| standard: for emitted interference | EN 55022 Class B |
| standard: for interference immunity | EN 61000-6-2 |
| certificate of suitability: CE marking | Yes |
|---|---|
| certificate of suitability: UL approval | Yes; cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259 |
| certificate of suitability: EAC approval | Yes |
| certificate of suitability: SEMI F47 | Yes |
| type of certification CB-certificate | Yes |
| MTBF at 40 °C | 4 505 531 h |
| 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 | 72 kg |
| global warming potential [CO2 eq]: during manufacturing | 35.8 kg |
| global warming potential [CO2 eq]: during operation | 34.7 kg |
| global warming potential [CO2 eq]: after end of life | 0.67 kg |
| ambient temperature: during operation | -25 ... +60 °C; with natural convection |
|---|---|
| ambient temperature: during transport | -40 ... +70 °C |
| ambient temperature: during storage | -40 ... +70 °C |
| environmental category according to IEC 60721 | Climate class 3K3, 5 ... 95% no condensation |
| suitability for interaction modular system | Yes |
|---|---|
| type of connection to system components | Via integrated connector |
| width × height × depth of the enclosure | 125 × 125 × 150 mm |
|---|---|
| installation width × mounting height | 125 mm × 225 mm |
| required spacing: top | 50 mm |
| required spacing: bottom | 50 mm |
| required spacing: left | 0 mm |
| required spacing: right | 0 mm |
| fastening method | Snaps onto DIN rail EN 60715 35x15 |
| DIN-rail mounting | Yes |
| S7 rail mounting | No |
| wall mounting | No |
| housing can be lined up | Yes |
| mechanical accessories | Device identification label 20 mm × 7 mm, TI-grey 3RT2900-1SB20 |
|---|
| other information | Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified) |
|---|
| eClass | 16 27-04-07-05 |
|---|---|
| ETIM | 10 EC000382 |
| IDEA | 4 4149 |
| UNSPSC | 15 39-12-10-11 |
| Net weight | 2.26 kg |
|---|---|
| Country of origin | Romania |
| Shipping weight | 2.76 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 BUF8600 is 40 A.
The tariff (HS) code on file for BUF8600 is 85322200.
The EAN (GTIN) of BUF8600 is 4025515154518.
BUF8600 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.