FLS250-1048

AC/DC Open Frame Power Supply (PSU), Screw Terminal, ITE, 1 Output, 350W @ 375LFM, 250 W

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Manufacturer: EOS POWER
Product type: AC / DC Open Frame Power Supplies
SVHC: To Be Advised
Product Range: FLS250 Series
No. of Outputs: 1 Output
Input Voltage VAC: 85V AC to 264V AC
Power Supply Output Type: Fixed
Output Current - Output 1: 7.2A
Output Current - Output 2: -
Output Current - Output 3: -
Output Current - Output 4: -
Output Voltage - Output 1: 48VDC
Output Voltage - Output 2: -
Output Voltage - Output 3: -
Output Voltage - Output 4: -
Power Supply Applications: ITE
Power Rating (Forced Cooling): 350W @ 375LFM
Power Rating (Convection Cooling): 250W

Delivery and price
Units per pack	5
Price	94.44 €
Current stock	10+
Lead time	30 days

Datasheet

**ITE Grade AC-DC Power Supplies** 

**Silent 250 Watt** 

## **250 Watt** 

## l 4.5 x 2.5 X 1.5 

- l Mounting as Per 4 X 2 Footprint/ 3 X5 Footprint 

- l 250 Watts Convection Cooled & 350 Watts Forced Cooled 

- l Efficiency up to 94% 

- l -40 to 70 degree operating temperature 

- l High power density : 20.74W/inch[3] 

- l 12 V Fan O/P / Thermal Shut-Down feature / Dual fusing 

- l Current Sharing  (Optional with ADD-ON CARD) 

- l 5 V STBY/ PGPF Signal / Remote ON-OFF Feature (Optional ) 

- l 2.56m Hours, Telcordia -SR332-issue 3 MTBF 

- l No Load Power < 1W 

- l Available with metal enclosures/accessories 

**Dimension** The New FLS250 series is true fanless power up to 250W. this is a highly efficient power supply that can deliver up to 350W with air. The power supply is packed in 4.5’ x 2.5’ size having the **FLS :** 4.5 x 2.5 x 1.5 Inches ~~opton of industry-standard “2 x 4” or “3 x 5” like a mountng opton. Also available in various~~ Form factor ~~type of casing opton.~~ 

## ~~**250 Watts**~~ 

**Model Number                         Description                       Voltage          Max. Load       Max. Load        Min. Load          Ripple**[1] 

|**Model Number                         Description                       Voltage          Max. Load       Max. Load        Min. Load          Ripple**|**Model Number                         Description                       Voltage          Max. Load       Max. Load        Min. Load          Ripple**|**Model Number                         Description                       Voltage          Max. Load       Max. Load        Min. Load          Ripple**|**Model Number                         Description                       Voltage          Max. Load       Max. Load        Min. Load          Ripple**|**Model Number                         Description                       Voltage          Max. Load       Max. Load        Min. Load          Ripple**|**Model Number                         Description                       Voltage          Max. Load       Max. Load        Min. Load          Ripple**[1]|
|---|---|---|---|---|---|
|**(Convection)     (375 LFM)**|**(Convection)     (375 LFM)**|**(Convection)     (375 LFM)**|**(Convection)     (375 LFM)**|||
|FLS250-1X12<br>FLS250-1X12<br>with Screw Terminal<br>with JST Connector<br>12V<br>12V<br>16.60A<br>16.60A<br>25.00A<br>18.00A<br>0.0A<br>0.0A<br>2%<br>2%<br>~~SE~~<br>~~a~~||||||
|FLS250-1X15<br>~~a~~|with Screw Terminal<br>15V|13.30A|20.00A|0.0A|2%|
|FLS250-1X15<br>~~a~~|with JST Connector<br>15V|13.30A|18.00A|0.0A|2%|
|FLS250-1X24<br>FLS250-1X24<br>FLS250-1X30<br>FLS250-1X30<br>FLS250-1X48<br>~~a~~<br>~~a~~<br>~~eS~~<br>~~a~~<br>~~a~~|with Screw Terminal<br>with JST Connector<br>with Screw Terminal<br>with JST Connector<br>with Screw Terminal<br>24V<br>24V<br>30V<br>30V<br>48V|10.41A<br>10.41A<br>8.30A<br>8.30A<br>5.20A|14.50A<br>14.50A<br>11.60A<br>11.60A<br>7.20A|0.0A<br>0.0A<br>0.0A<br>0.0A<br>0.0A|1%<br>1%<br>1%<br>1%<br>1%|
|FLS250-1X48<br>~~a~~|with JST Connector<br>48V|5.20A|7.20A|0.0A|1%|
|FLS250-1X58<br>~~a~~|with Screw Terminal<br>58V|4.30A|6.0A|0.0A|1%|
|FLS250-1X58<br>~~a~~|with JST Connector<br>58V|4.30A|6.0A|0.0A|1%|



For Screw Terminal version replace “X” above with “0”, example FLS250-1024 

For Header version replace “X” above with “3”, example FLS250-1324 

Add Suffix “B“ for 3 X 5 Mounting option, example FLS250-1024-B For Current Sharing (ADD-ON CARD) Option contact sales person. 

For 5V STBY / Remote ON-OFF / PGPF used model number FLS250-2XXX (Contact Sales for more details) 

FLS250-CK Metal Cover Kit Accessory Available. 

MS 

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**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

|**Silent 250 Watt**<br>**ITE Grade**<br>**AC-DC Power Supplies**<br>~~=~~<br>Es|**Silent 250 Watt**<br>**ITE Grade**<br>**AC-DC Power Supplies**<br>~~=~~<br>Es|**Silent 250 Watt**<br>**ITE Grade**<br>**AC-DC Power Supplies**<br>~~=~~<br>Es|
|---|---|---|
|**Pin Connection**<br>J1 (Input)<br>AC LINE<br>NOT FITTED<br>AC NEUTRAL<br>PIN 1<br>PIN 2<br>PIN 3<br>~~=~~|||
||PIN 1||
||PIN 2|NOT FITTED|
||PIN 3|AC NEUTRAL|
|J2 Option 1 & 2<br>(Output)<br>~~=~~|PIN 1,2,3|V1 +VE|
||PIN 4,5,6|V1 -VE|
|J4 (Earth)<br>~~=~~||Quick Disconnect|
|(J9)<br>Signal Connector<br>~~=~~|PIN 1|+VS|
||PIN 2|-VS|
||PIN 3|FAN -|
||PIN 4|FAN +|
|J(310)<br>(Multifunction Connector)***<br>~~=~~|PIN 1|+5V|
||PIN 2|GND|
||PIN 3|GND|
||PIN 4|REMOTE ON/OFF|
||PIN5|PGPF|



## Notes 

1. ”***” mark content available only in FLS250-2XXX series 

~~2. Ripple is peak to peak with 20 MHz bandwidth and 10 μF (Tantalum capacitor) in parallel with a 0.1 μF capacitor at rated line voltage and load ranges.~~ 

~~3. Specifcatons are for nominal input voltage, 25°C unless otherwise stated.~~ 

~~4. 250W with natural convecton cooling at 100 to 264VAC.~~ 

~~5. 350W with Forced cooling at 100 to 264VAC.~~ 

6. Combine Output Power of Main Output, Fan supply and Standby shall not exceed max power rating. 

7. Output ripple can be more than 1 % of the output voltage. 

8. When used in Cover Kit, de-rate output power to 70% under all operating conditions. 

9. ”***” Standby output voltage 5 V/ 0.5A(convection) with tolerance including set point accuracy, line and load regulation is +/-10 %.Ripple and noise  is less than 5 %. 

## **Input** 

|**Inputputut**||||
|---|---|---|---|
|~~**Characteristic                           Minimum         Typical      Maximum          Units           Notes & Conditions**~~|~~**Characteristic                           Minimum         Typical      Maximum          Units           Notes & Conditions**~~|~~**Characteristic                           Minimum         Typical      Maximum          Units           Notes & Conditions**~~|~~**Characteristic                           Minimum         Typical      Maximum          Units           Notes & Conditions**~~|
|~~Input Voltage~~|~~85~~<br>~~264~~|~~VAC~~|~~De-rate linearly from 100% at 100VAC to 80% at 85VAC~~|
||~~120~~<br>~~370~~|~~VDC~~||
|~~Input Frequency~~|~~47~~<br>~~63~~|~~Hz~~||
|~~Input Current~~|~~6.3~~|~~A~~||
|~~Inrush Current~~|~~115 VAC - 25A~~<br>~~264 VAC -75A~~<br>~~230VAC - 45A~~|~~A~~||
|~~No Load Input  Power~~|~~1~~|~~W~~||
|~~Power Factor~~|~~exceeds 0.95 at Full Load~~|||



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~~2~~ 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Output** 

**Characteristic                         Minimum        Typical       Maximum         Units          Notes & Conditions** Output Power 250 350 W a ~~GG~~ Hold-up Time 8mS At 230 VAC ~~eG~~ Line Regulation +/-0.5% ~~ee~~ Load Regulation +/-0.5% Output Voltage Adjustability +/-3% ~~Re GG~~ Rise Time 55 ms ~~a DG~~ Set Point Tolerance +/-1% ~~GO eG~~ Over Current Protection > 110% ee Over Voltage Protection 110 to 140% 25% step load change, at 0.1A/uS slew rate, 50% duty cycle, 50Hz=4% , recovery time < 5 ms ~~es~~ Transient Response 

## **General** 

|**General**||
|---|---|
|**Characteristic**~~**Minimum       Typical       Maximum         Units          Notes & Conditions**~~|~~**Minimum       Typical       Maximum         Units          Notes & Conditions**~~|
|Efficiency<br>~~92%~~<br>~~94%~~|~~At 230 VAC~~|
|~~Mean Time BetweenFailure~~<br>~~2.56m Hours~~|~~Telcordia -SR332-issue 3~~|
|<br>~~Isolat~~i~~on: Input to Output~~<br>~~Input to Ground~~<br>~~4000~~<br>~~2500~~|ITAV<br>VDC|
|~~Leakage Current~~<br>~~300 uA Typical~~||



## ~~**Effciency Vs Load**~~ 

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~~3~~ 

## **Silent 250 Watt** 

## **ITE Grade AC-DC Power Supplies** 

## **Environmental** 

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||||||
|---|---|---|---|---|
|Characteristic                          Minimum      Typical       Maximum          Units          Notes & Conditions|
|Operating Temperature|-40|70|°C|-40 to 0 startup is guaranteed with spec deviation.|
|70°C (Derated)|
|Storage Temperature|-40|85|°C|
|Relative Humidity|5|95|%|
|Operating Altitude|16,000|ft|RH, non-condensing|
|Short Circuit Protection|Hiccup mode|
|Switching Frequency|PFC – 70 to 130 KHz ,PWM – 50-80 KHz|
|Cooling|350W with 375 LFM forced air cooling at 100 to 264VAC|
|250W with natural convection cooling at 100 to 264VAC|

**----- End of picture text -----**<br>


## ~~**Signals & Controls**~~ 

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|||
|---|---|
|Characteristic                                                                    Notes & Conditions|
|***Power Good|Is a TTL signal which goes high afer main output reaches 90% of its set value.|
|The delay is 0.1 s to 0.5 s|
|***Power Fail|The same signal goes low at least 1ms before main output falls to 90% of set value|
|at AC Power of|
|***Remote on/of|Shortng Pin 3 to Pin 4 enables main output while keeping the Pins open disables|
|main output.|

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## **Signals & Controls** ~~**Drawing**~~ 

## ~~*****Power Good / Power Fail Signal**~~ 

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## **ITE Grade Silent 250 Watt AC-DC Power Supplies** CUES 

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**----- Start of picture text -----**<br>
Signals & Controls Drawing<br>*** Remote ON OFF<br>**----- End of picture text -----**<br>


## **Signals & Controls Drawing** 

## **Voltage Sense** 

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**ITE Grade Silent 250 Watt AC-DC Power Supplies** a &c **Mechanical Specifications** AC Input Connector (J1) Molex: 26-60-4030 Mating: 09-50-3031; Pins: 08-50-0106 DC Output Connector (J2) Option 1 Molex: 39357 Series or equivalent (Screw Terminal) DC Output Connector (J2) Option 2 JST p/n: B6P-VH(LF)(SN) (JST Connector) Mating: JST p/n: VHR-6M; Pins: SVH-41T-P1.1 Signal Connector (J9) Molex Part No: 10-89-7041 or equivalent Mating part no: 1053082204 ; Pins: 1053001100 J(310) HEADER  5POS 2.54MM) P/N : P9102-40-12-1 (Multifunction Connector)*** Mating part no : CONN RCPT HSNG 5POS CST-100 II P/N :1375820-5 Pins : CONN SOCKET 22-26AWG CRIMP TIN P/N : 1375819-1 Dimensions 4.5 x 2.5 x 1.58 inches (114.30 x 63.5 x 40 mm) Weight 400 gm approx ~~=———~~ ~~**EMC: Emissions Phenomenon                                         Standard                           Test Level               Notes & Conditions**~~ Conducted EN 55032 Level B CISPR22-B, FCC PART15-B Radiated EN 55032 Level A Level B with external core (King core K5B RC 25x12x15-M or Equivalent in input cable) 

## ~~**EMC: Immunity**~~ 

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||||||||
|---|---|---|---|---|---|---|
|Phenomenon                                Standard                   Test Level                  Criteria            Notes & Conditions|
|Input Curr|Medical D|e|nt Harmonics|vice EMC|EN 61000-3-2|Class A|
|VL|o|w Voltage PSU EMCltage Fluctuaton and Flicker|EN 61000-3-3|compliance|
|ESD ImmunityESD Immunity|EN 61000-4-2|Level 3|A|
|Radiated Field ImmunityRadiated Immunity|EN 61000-4-3|Level 3|A|
|Electrical Fast Transient ImmunityEFT/Burst|EN61000-4-4|Level 3|A|
|Surge ImmunitySurge|EN 61000-4-5|Level 3|A|
|Conducted ImmunityConducted Immunity|EN 61000-4-6|Level 3|A|
|Magnetc Field Immunity|EN 61000-4-8|Level 3|A|
|Voltage dips, interruptons|EN 61000-4-11|A & B|

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## **Safety Approvals** 

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||||
|---|---|---|
|Safety Agency|Safety Standard|Notes & Conditions|
|CB|IEC62368-1:2018|
|Nemko|EN62368-1:2020;A11|
|ITAV|
|UL|UL62368-1 ED 3.0|
|CSA|CAN/CSA C22.2 No. 62368-1:19|
|CE Mark|Complies with LVD Directve|

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## **Silent 250 Watt** 

## **ITE Grade AC-DC Power Supplies** 

## **Derating Curve** 

De-rate linearly from 100% at 100VAC to 80% at 85VAC. 

## **Derating Curve** 

Convection load: 250W up to 40 °C. De-rate Between 40°C -50°C @ 1.2 % per °C above 50 °C @ 1.67 % per °C Forced air cooled load: 350W up to 40 °C. De-rate Between 40°C -50°C @ 1.2 % per °C above 50 °C @ 1.67 % per °C 

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**ITE Grade Silent 250 Watt AC-DC Power Supplies** Ge EO: 

## **Derating Curve** 

Convection load: 200W up to 40 °C. De-rate Between 40°C -50°C @ 1.2 % per °C above 50 °C @ 1.67 % per °C Forced air cooled load: 300W up to 40 °C. De-rate Between 40°C -50°C @ 1.2 % per °C above 50 °C @ 1.67 % per °C 

## **Derating Curve** 

Convection load: 175W up to 40 °C. De-rate Between 40°C -50°C @ 1.2 % per °C above 50 °C @ 1.67 % per °C 

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**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **Screw terminal (1XXX/ 2XXX)** 

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**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **Header terminal (1XXX/ 2XXX)** 

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**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **Screw terminal (1XXX-B/ 2XXX-B)** 

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11 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **Header terminal (1XXX-B/ 2XXX-B)** 

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12 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **FLS250 2.5 X 4.5 with L-Bracket** 

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**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **FLS250 3 X 5 with L -Bracket** 

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14 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **FLS250 2.5 X 4.5 with U Channel** 

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15 

**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **FLS250 3 X 5 with U Channel** 

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## **Silent 250 Watt** 

## **ITE Grade AC-DC Power Supplies** 

## **Mechanical Drawing** 

## **FLS250 2.5 X 4.5 with Cover kit** 

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**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **FLS250 3 X 5 with Cover Kit** 

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## **Silent 250 Watt** 

## **ITE Grade AC-DC Power Supplies** 

## **Mechanical Drawing** 

## **FLS250 2.5 X 4.5 with Cover kit - Fan** 

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**ITE Grade AC-DC Power Supplies** 

## **Silent 250 Watt** 

## **Mechanical Drawing** 

## **FLS250 3 X 5 with Cover kit - Fan** 

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Updated at April 22, 2026

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