Main Components of a PLC System: Complete Guide for Engineers
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Siemens 6EP4347-7RB00-0AX0 SITOP RED1200 redundancy module, 24/48V DC, 2x20A input, 40A combined output.
The Siemens 6EP4347-7RB00-0AX0 is a SITOP RED1200 redundancy module that decouples two independent 24/48 V DC power supplies, each rated up to 20 A, into a single combined 40 A output for load-sharing or 1+1 redundant operation. It reaches 97.5% efficiency with only 25 W power loss at full rated output and mounts on a 35 mm DIN rail.
Feeding the module from two separate 24 V, or up to 48 V, supplies rated 20 A each lets either supply fail without interrupting the shared 40 A output bus - the redundancy sits at the power-supply level, so the two source units still need to be sized and protected independently. The wide 12-48 V DC input range covers both 24 V and 48 V DC distribution schemes on the same part number. At 97.5% efficiency and 25 W typical loss, cabinet heat load stays low even feeding a fully loaded 40 A bus continuously.
N+1 redundant 24 V or 48 V DC power distribution for control systems where a single power-supply failure must not interrupt PLC, I/O, or drive control power, such as process plants and continuous-operation machine control cabinets.
| product brand name | SITOP |
|---|---|
| product type designation | RED1200 |
| product designation | Redundancy module |
| type of the power supply network | DC voltage |
|---|---|
| voltage curve at input | DC |
| supply voltage at DC | 12 ... 48 V |
| input voltage at DC | 10 ... 58 V |
| voltage curve at output | Controlled DC voltage |
|---|---|
| number of outputs | 1 |
| output voltage at DC rated value | 24 V |
| formula for output voltage | Vin - approx. 0.6 V |
| output voltage: at output 1 at DC rated value | 24 V |
| output voltage: at output 1 at DC | 12 ... 48 V |
| output voltage adjustable | No |
| output current: rated value | 40 A |
| bridging of equipment | No |
| Part number | 6EP4347-7RB00-0AX0 |
|---|---|
| Type designation | RED1200 |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515155249 |
| ETIM class | EC002540 |
| eCl@ss | 27040701 |
| efficiency in percent | 97.5 % |
|---|---|
| power loss [W]: at rated output voltage for rated value of the output current typical | 25 W |
| power loss [W]: during no-load operation maximum | 0.1 W |
| galvanic isolation between input and output | No |
|---|---|
| operating resource protection class | Class III |
| protection class IP | IP20 |
| standard: for emitted interference | EN 61000-6-3 |
|---|---|
| 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: NEC Class 2 | No |
| MTBF at 40 °C | 6 100 000 h |
| certificate of suitability: IECEx | No |
|---|---|
| certificate of suitability: ATEX | No |
| certificate of suitability: ULhazloc approval | No |
| certificate of suitability: FM registration | No |
| shipbuilding approval | No |
|---|---|
| Marine classification association: American Bureau of Shipping Europe Ltd. (ABS) | No |
| Marine classification association: French marine classification society (BV) | No |
| Marine classification association: Det Norske Veritas (DNV) | No |
| Marine classification association: Lloyds Register of Shipping (LRS) | No |
| Environmental Product Declaration | Yes |
|---|---|
| global warming potential [CO2 eq]: total | 707.9 kg |
| global warming potential [CO2 eq]: during manufacturing | 22.3 kg |
| global warming potential [CO2 eq]: during operation | 685 kg |
| global warming potential [CO2 eq]: after end of life | 0.52 kg |
| ambient temperature: during operation | -40 ... +70 °C; with natural convection |
|---|---|
| ambient temperature: during transport | -40 ... +85 °C |
| ambient temperature: during storage | -40 ... +85 °C |
| environmental category according to IEC 60721 | Climate class 3K3, 5 ... 95% no condensation |
| type of electrical connection | push-in terminals |
|---|---|
| at input | In1, In2: each for 0.75 ... 16 mm2 |
| at output | Out1: 0.75 ... 16 mm2 |
| width × height × depth of the enclosure | 45 × 135 × 125 mm |
|---|---|
| installation width × mounting height | 45 mm × 225 mm |
| required spacing: top | 45 mm |
| required spacing: bottom | 45 mm |
| required spacing: left | 0 mm |
| required spacing: right | 0 mm |
| fastening method | Snaps onto DIN rail EN 60715 35x7.5/15 |
| DIN-rail mounting | Yes |
| S7 rail mounting | No |
| wall mounting | No |
| housing can be lined up | Yes |
| other information | Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified) |
|---|
| eClass | 16 27-04-07-01 |
|---|---|
| ETIM | 10 EC002540 |
| IDEA | 4 4130 |
| UNSPSC | 15 39-12-10-04 |
| Net weight | 0.5 kg |
|---|---|
| Package dimensions | 190 × 185 × 80 mm |
| Country of origin | Romania |
| Shipping weight | 1.0 kg |
| Ships from | Türkiye |
| Dispatch | 16 Nov |
| Stock | In stock |
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 RED1200 is 40 A.
The rated motor power of RED1200 is 25 W kW.
The tariff (HS) code on file for RED1200 is 85049090.
The EAN (GTIN) of RED1200 is 4025515155249.
RED1200 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
Master PLC system components: CPU, power supply, I/O modules, communication interfaces, and software with sizing formulas and selection tips. Shop at Stoklink.