Input | ||
Input | 3-phase AC | |
Rated voltage value Vin rated | 400 ... 500 V | |
Voltage range AC | 320 ... 575 V | |
Wide-range input | Yes | |
Overvoltage resistance | 2.3 × Vin rated, 1.3 ms | |
Mains buffering | at Vin = 400 V | |
Mains buffering at Iout rated, min. | 15 ms; at Vin = 400 V | |
Rated line frequency 1 | 50 Hz | |
Rated line frequency 2 | 60 Hz | |
Rated line range | 47 ... 63 Hz | |
input current | ||
● at rated input voltage 400 V | 1.2 A | |
● at rated input voltage 500 V | 1 A | |
Switch-on current limiting (+25 °C), max. | 18 A | |
I²t, max. | 0.8 A²·s | |
Built-in incoming fuse | none | |
Protection in the mains power input (IEC 898) | Required: 3-pole connected miniature circuit breaker 6 ... 16 A characteristic C or circuit breaker 3RV2011-1DA10 (setting 3 A) or 3RV2711-1DD10 (UL 489) | |
Output | ||
Output | Controlled, isolated DC voltage | |
Rated voltage Vout DC | 48 V | |
Total tolerance, static ± | 3 % | |
Static mains compensation, approx. | 0.1 % | |
Static load balancing, approx. | 0.2 % | |
Residual ripple peak-peak, max. | 100 mV | |
Spikes peak-peak, max. (bandwidth: 20 MHz) | 200 mV | |
Adjustment range | 42 ... 56 V | |
product function output voltage adjustable | Yes | |
Output voltage setting | via potentiometer; max. 480 W | |
Status display | Green LED for 48 V OK | |
Signaling | Relay contact (NO contact, rating 60 V DC/ 0.3 A) for 48 V OK | |
On/off behavior | No overshoot of Vout (soft start) | |
Startup delay, max. | 2.5 s | |
Voltage rise, typ. | 150 ms | |
voltage increase time of the output voltage maximum | 500 ms | |
Rated current value Iout rated | 10 A | |
Current range | 0 ... 10 A | |
● Note | +60 ... +70 °C: Derating 3%/K | |
supplied active power typical | 480 W | |
short-term overload current | ||
● at short-circuit during operation typical | 23 A | |
duration of overloading capability for excess current | ||
● at short-circuit during operation | 25 ms | |
constant overload current | ||
● on short-circuiting during the start-up typical | 11 A | |
Parallel switching for enhanced performance | Yes; switchable characteristic | |
Numbers of parallel switchable units for enhanced performance | 2 | |
Efficiency | ||
Efficiency at Vout rated, Iout rated, approx. | 93 % | |
Power loss at Vout rated, Iout rated, approx. | 36 W | |
Closed-loop control | ||
Dynamic mains compensation (Vin rated ±15 %), max. | 1 % | |
Dynamic load smoothing (Iout: 50/100/50 %), Uout ± typ. | 2 % | |
Load step setting time 50 to 100%, typ. | 2 ms | |
Load step setting time 100 to 50%, typ. | 2 ms | |
setting time maximum | 10 ms | |
Protection and monitoring | ||
Output overvoltage protection | Yes, according to EN 60950-1 | |
Current limitation, typ. | 11 A | |
property of the output short-circuit proof | Yes | |
Short-circuit protection | Alternatively, constant current characteristic approx. 11 A or latching shutdown | |
enduring short circuit current RMS value | ||
● typical | 11 A | |
overcurrent overload capability in normal operation | overload capability 150 % Iout rated up to 5 s/min | |
Overload/short-circuit indicator | LED yellow for "overload", LED red for "latching shutdown" | |
Safety | ||
Primary/secondary isolation | Yes | |
galvanic isolation | Safety extra-low output voltage Uout acc. to EN 60950-1 and EN 50178 | |
Protection class | Class I | |
leakage current | ||
● maximum | 3.5 mA | |
Degree of protection (EN 60529) | IP20 | |
Approvals | ||
CE mark | Yes | |
UL/cUL (CSA) approval | cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259 | |
Explosion protection | IECEx Ex nA nC IIC T4 Gc; ATEX (EX) II 3G Ex nA nC IIC T4 Gc; cCSAus (CSA C22.2 No. 213, ANSI/ISA-12.12.01) Class I, Div. 2, Group ABCD, T4 | |
certificate of suitability NEC Class 2 | No | |
FM approval | - | |
CB approval | Yes | |
Marine approval | ABS, GL | |
EMC | ||
Emitted interference | EN 55022 Class B | |
Supply harmonics limitation | EN 61000-3-2 | |
Noise immunity | EN 61000-6-2 | |
environmental conditions | ||
ambient temperature | ||
● during operation | -10 ... +70 °C | |
— Note | with natural convection | |
● during transport | -40 ... +85 °C | |
● during storage | -40 ... +85 °C | |
Humidity class according to EN 60721 | Climate class 3K3, 5 … 95% no condensation | |
Mechanics | ||
Connection technology | screw-type terminals | |
Connections | ||
● Supply input | L1, L2, L3, PE: 1 screw terminal each for 0.5 ... 2.5 mm² single-core/finely stranded | |
● Output | +, -: 2 screw terminals each for 0.2 ... 4 mm² | |
● Auxiliary | 13, 14 (alarm signal): 1 screw terminal each for 0.14 ... 1.5 mm² | |
width of the enclosure | 70 mm | |
height of the enclosure | 125 mm | |
depth of the enclosure | 125 mm | |
required spacing | ||
● top | 50 mm | |
● bottom | 50 mm | |
● left | 0 mm | |
● right | 0 mm | |
Weight, approx. | 1.2 kg | |
product feature of the enclosure housing for side-by-side mounting | Yes | |
Installation | Snaps onto DIN rail EN 60715 35x7.5/15 | |
mechanical accessories | Device identification label 20 mm × 7 mm, pale turquoise 3RT1900-1SB20 | |
MTBF at 40 °C | 664 995 h | |
other information | Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified) |
- New (OVP): Unused and undamaged items in the original packaging.
- New (without original packaging): Unused and undamaged items that may no longer be in the original packaging.
- Like New: Items that look like new and show only minimal signs of wear.
- Very good: Items that show only slight signs of wear and are fully functional.
- Good: Items that show normal signs of use but are still fully functional.
- Acceptable: Items that show more severe signs of wear but are functional.
- Defective / DIY: Items that are no longer functional or have significant damage. These items are usually sold for spare parts or for repair.
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For each of our products you can select the condition, with the following categories available:
New (OVP): Unused and undamaged items in the original packaging.
New (without original packaging): Unused and undamaged items that may no longer be in the original packaging.
Like New: Items that look like new and show only minimal signs of wear. Very Good: Items that show only light signs of wear and are fully functional. Good: Items that show normal signs of wear but are still fully functional.
Acceptable: Items that show more severe signs of wear but are functional.
Defective / DIY: Items that are no longer functional or have significant damage. These items are usually sold for spare parts or for repair. If there are major differences between the condition categories, e.g. broken casing, a separate image is added for the affected category. Otherwise, grades such as "Very Good" and "Good" can only be distinguished from one another by increasing signs of wear.
The E-Stand on Siemens industrial electronics products provides information about the development and modifications of a specific product. It is a classification system that Siemens uses to identify different production and development stages within a product type. Each E-Stand can include technical improvements, adjustments or other changes.
An important point to note is that products with different E-levels are not always directly interchangeable. Technical characteristics may differ between versions, which means that compatibility with your existing plant or system may not always be guaranteed. It is advisable to carefully check whether the new product is compatible with the corresponding E-level for your application before making a replacement.
We attach great importance to transparency in our shop. That's why we list the E-Stand for every Siemens industrial electronics product so that you know exactly which version you are purchasing. This should help you make an informed decision.