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SITOP SEL1200 8-channel selectivity module, 24V DC/60A input, 8x2-10A adjustable outputs, DIN rail.
Siemens 6EP4438-7FB00-3DX0 is a SITOP SEL1200 8-channel selectivity module that splits a single 24 V DC, 60 A supply into eight individually protected 2-10 A outputs, each adjustable via potentiometer. It isolates a fault on one branch circuit without tripping the upstream supply, using a three-color LED per output and a floating signal contact for remote diagnostics.
Each of the 8 outputs trips independently on overcurrent (Iout greater than 2.0x set value clears in about 30 ms; Iout greater than 1.0x set value clears in about 5 s), so a shorted branch drops only that channel instead of pulling down the shared 24 V bus - pick this over a single large-frame breaker when a machine has multiple independent 24 V DC sub-circuits that must fail separately. The per-channel threshold is field-adjustable 2-10 A via potentiometer, so the same module covers mixed loads (sensors on 2 A, valve banks on 8-10 A) without needing separate fixed-current modules. A DIN-rail width of only 45 mm keeps cabinet footprint small for 8 protected outputs.
Used downstream of a bulk 24 V DC power supply to give each machine zone, sensor group, or actuator bank its own selectively protected output, so a single shorted branch does not shut down the whole control cabinet.
| product brand name | SITOP |
|---|---|
| product type designation | SEL1200 |
| product designation | SITOP Selectivity module |
| type of current supply | selectivity module, 8 x 2 ... 10 A com. sign. contact or diagnostics monitor |
| type of the power supply network | Controlled DC voltage |
|---|---|
| supply voltage at DC rated value | 24 V |
| input voltage at DC | 20.4 ... 30 V |
| overvoltage overload capability | 35 V |
| input current at rated input voltage 24 V rated value | 60 A |
| voltage curve at output | controlled DC voltage |
|---|---|
| formula for output voltage | Vin - approx. 0.2 V |
| relative overall tolerance of the voltage note | In accordance with the supplying input voltage |
| number of outputs | 8 |
| output current up to 60 °C per output rated value | 10 A; +60 ... +70 °C: Derating 2%/K |
| adjustable current response value current of the current-dependent overload release | 2 ... 10 A |
| type of response value setting | via potentiometer |
| response delay maximum | 5 s |
| product feature parallel switching of outputs | Yes |
| type of outputs connection | switch-on of all outputs after power-up of the supply voltage > 20 V, delay time of 25 ms, 200 ms, 500 ms, or "load-optimized" via DIP switch configurable for sequential switch-on |
| Part number | 6EP4438-7FB00-3DX0 |
|---|---|
| Type designation | SEL1200 |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515155270 |
| ETIM class | EC001440 |
| eCl@ss | 27371802 |
| efficiency in percent | 98 % |
|---|---|
| power loss [W] at rated output voltage for rated value of the output current typical | 18 W |
| switching characteristic: of the excess current | Iout > 2.0 x set value, switch-off after approx. 30 ms, Iout > 1.8 x set value, switch-off after approx. 0.1 s, Iout > 1.5 x set value, switch-off after approx. 1 s, Iout > 1.0 x set value, switch-off after approx. 5 s |
|---|---|
| switching characteristic: of the immediate switch-off | Iout > set value and Vin < 20 V, switch-off after approx. 8 ms |
| design of the reset device/resetting mechanism | via sensor per output |
| remote reset function protection and monitoring | non-isolated 24 V input (signal level "high" at > 15 V) |
| fuse protection type at input | 16 A per output (not accessible) |
| display version for normal operation | Three-color LED per output: green LED for "Output switched through"; yellow LED for "Output switched off manually"; red LED for "Output switched off due to overcurrent" |
| design of the switching contact for signaling function | Floating common signal contact or status signal output (pulse/pause signal that can be evaluated via SIMATIC function block) |
| galvanic isolation between input and output at switch-off | No |
|---|---|
| standard for safety | according to EN 62368-1 |
| 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; UL-Recognized (UL 2367) File E328600; cULus-Listed (UL 508, CSA C22.2 No. 107.1) File E197259 |
| certificate of suitability: UKCA marking | Yes |
| certificate of suitability: EAC approval | Yes |
| type of certification: CB-certificate | Yes |
| MTBF at 40 °C | 925 000 h |
| certificate of suitability: IECEx | No |
|---|---|
| certificate of suitability: ATEX | No |
| shipbuilding approval | Yes |
|---|---|
| Marine classification association: Det Norske Veritas (DNV) | Yes |
| Environmental Product Declaration | Yes |
|---|---|
| global warming potential [CO2 eq]: total | 506.7 kg |
| global warming potential [CO2 eq]: during manufacturing | 13.1 kg |
| global warming potential [CO2 eq]: during operation | 493.2 kg |
| global warming potential [CO2 eq]: after end of life | 0.3 kg |
| Siemens eco profile (SEP) | Siemens EcoTech |
| 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 |
|---|---|
| at input | 24V1, 24V2: push-in for 0.5 ... 16 mm2; 0V1, 0V2: push-in for 0.5 ... 4 mm2 |
| at output | Output 1 ... 8: push-in for 0.5 ... 4 mm2 |
| for auxiliary contacts | RST: push-in for 0.2 ... 1.5 mm2 |
| for signaling contact | 13, 14: push-in for 0.2 ... 1.5 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 |
| identification link | Yes; acc. to IEC 61406-1:2022 |
|---|
| other information | Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified) |
|---|
| Net weight | 0.3 kg |
|---|---|
| Package dimensions | 145 × 135 × 55 mm |
| Country of origin | Romania |
| Shipping weight | 0.8 kg |
| Ships from | Türkiye |
| Dispatch | 13 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 SEL1200 is 10 A.
The rated operational voltage of SEL1200 is 24 V AC.
The rated motor power of SEL1200 is 18 W kW.
The tariff (HS) code on file for SEL1200 is 85363010.
The EAN (GTIN) of SEL1200 is 4025515155270.
SEL1200 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.